KR101243145B1 - Apparatus for supplying power - Google Patents

Abstract

The present invention is a PWM controller IC for adjusting the pulse width; A transformer configured to receive at least one input AC voltage and output a variable at least one AC voltage; An AC / DC converter which receives the variable at least one alternating voltage output from the transformer and converts the converted at least one DC voltage to provide the converted at least one DC voltage to an electronic device; When the electronic device is turned on with the converted DC voltage output from the AC / DC converter, PWM is supplied by converting one DC voltage among the converted DC voltages output from the AC / DC converter. DC voltage feedback unit for feeding back to the controller IC; And a converted DC voltage stored in the DC voltage feedback unit and a converted one supplied from the AC / DC converter when the electronic device is turned on with the converted DC voltage output from the AC / DC converter. Provided is a power supply including a feedback voltage supply to block the feedback voltage from being supplied to the PWM controller IC when the feedback voltage including the elevated voltage by the DC voltage of the predetermined reference feedback voltage or more.

Description

Apparatus for supplying power

Embodiments relate to a power supply.

In general, power supplies have been provided to provide adequate power to electronics.

Here, the power supply device uses at least one of an AC / DC converter for converting an AC voltage into a DC voltage or a DC / DC converter for converting a DC voltage into a DC voltage of another level to supply appropriate power to a load.

Recently, researches on improved power supplies that can prevent the damage of electronic components and prevent the discharge of voltage quickly can be achieved while preventing noise caused by the explosion of the capacitor when the proper power is supplied to the electronics. Coming.

The power supply device according to the embodiment can prevent the noise caused by the explosion of the capacitor.

In addition, the power supply device according to the embodiment can prevent the damage to the electronic components in advance can reduce the maintenance cost.

In addition, the power supply device according to the embodiment can quickly discharge the discharge voltage.

The power supply apparatus according to the embodiment includes a PWM controller IC for adjusting the pulse width; A transformer configured to receive at least one input AC voltage and output a variable at least one AC voltage; An AC / DC converter which receives the variable at least one alternating voltage output from the transformer and converts the converted at least one DC voltage to provide the converted at least one DC voltage to an electronic device; When the electronic device is turned on with the converted DC voltage output from the AC / DC converter, the converted DC voltage is supplied among the converted DC voltages output from the AC / DC converter. DC voltage feedback unit for receiving and feeding back to the PWM controller IC; And a converted DC voltage stored in the DC voltage feedback unit and a converted one supplied from the AC / DC converter when the electronic device is turned on with the converted DC voltage output from the AC / DC converter. And a feedback voltage supply unit to block the feedback voltage from being supplied to the PWM controller IC when the feedback voltage including the elevated voltage by the DC voltage of the predetermined voltage is equal to or greater than the already set reference feedback voltage.

The power supply device according to the embodiment has the effect of preventing noise caused by the explosion of the capacitor.

In addition, the power supply device according to the embodiment can prevent damage to the electronic component in advance, thereby reducing the maintenance cost.

In addition, the power supply device according to the embodiment has the effect of quickly discharging the discharge voltage.

1 is a block diagram showing a power supply apparatus according to a first embodiment of the present invention.
2 is a block diagram showing in detail the power supply apparatus according to the first embodiment of the present invention.
3 is an equivalent circuit diagram showing a power supply device according to a first embodiment of the present invention.
Figure 4 is a block diagram showing in detail the power supply apparatus according to a second embodiment of the present invention.
5 is an equivalent circuit diagram showing a power supply device according to a second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a power supply device according to a first embodiment of the present invention, Figure 2 is a block diagram showing in detail a power supply device according to a first embodiment of the present invention.

3 is an equivalent circuit diagram of a power supply device according to a first embodiment of the present invention.

1 to 3, the power supply device 100 according to the first embodiment of the present invention includes a PWM controller IC 101, a transformer 102, an AC / DC converter 104, and a DC voltage feedback unit. 106, feedback voltage supply 108, and the like.

The PWM controller IC 101 is provided to adjust the pulse width, and the transformer 102 is provided to receive at least one input alternating voltage and output at least one alternating alternating voltage.

The AC / DC converter 104 receives the at least one variable AC voltage output from the transformer 102 and converts it into at least one DC voltage, thereby supplying the converted at least one DC voltage to the electronic device 105. Is provided.

In this case, the electronic device 105 may include a first electronic device 105a and a second electronic device 105b.

More specifically, the AC / DC converter 104 may include a first AC / DC converter 104a, a second AC / DC converter 104b, and the like.

The first AC / DC converting means 104a receives the first alternating current voltage among the at least one alternating alternating voltage output from the output end of the transformer 102 and converts the first AC voltage into the first DC voltage among the at least one DC voltage. It may be provided to supply the converted first DC voltage corresponding to the converted one DC voltage to the first electronic device 105a.

That is, the first AC / DC converting means 104a may include rectifier diodes D1 and D2, first resistor R1, first capacitor C1, and smoothing capacitors SC1 and SC2.

The rectifier diodes D1 and D2 are electrically connected to one end of the output side of the transformer 102 to rectify a first alternating voltage among at least one alternating alternating voltage output from the output end of the transformer 102 to at least one DC voltage. Can be provided to output a first DC voltage.

In this case, the rectifying diodes D1 and D2 may be provided including the first and second rectifying diodes D1 and D2 connected in parallel with each other.

One end of the first resistor R1 is electrically connected to one end of the output side of the transformer 102 and the rectifying diodes D1 and D2, and the other end thereof is electrically connected to the first electronic device 105a, so that the rectifying diodes D1 and D2 are connected. Can be provided to adjust the level of the rectified first DC voltage.

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One end of the first capacitor C1 is electrically connected to the first resistor R1, and the other end of the first capacitor C1 is electrically connected to the rectifying diodes D1 and D2 and the first electronic device 105a so that the rectifying diodes D1 and D2 are connected. And a first DC voltage rectified through the first resistor R1 and whose level is adjusted, may be stored and supplied to the first electronic device 105a.

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One end of the smoothing capacitors SC1 and SC2 is electrically connected to the first capacitor C1, the rectifier diodes D1 and D2, and the first electronic device 105a, and the other end is grounded and stored in the first capacitor C1. It may be provided to remove a noise component corresponding to the rectified, level-adjusted first DC voltage.

In this case, the smoothing capacitors SC1 and SC2 may be provided including first and second smoothing capacitors SC1 and SC2 connected in parallel with each other.

The second AC / DC converting means 104b receives a second alternating voltage among at least one alternating alternating voltage output from the other end of the output side of the transformer 102 and converts the second alternating current voltage into a second DC voltage among the at least one DC voltage. It can be provided to supply the converted second DC voltage to the second electronic device 105b.

That is, the second AC / DC converting means 104b may include a third rectifying diode D3, a second resistor R2, a second capacitor C2, and the like.

The third rectifier diode D3 is electrically connected to the other end of the output side of the transformer 102 to rectify a second AC voltage among the at least one alternating AC voltage output from the other end of the output side of the transformer 102 to at least one DC voltage. Can be provided to output a second DC voltage.

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One end of the second resistor R2 is electrically connected to the other end of the output side of the transformer 102 and the third rectifier diode D3, and the other end thereof is electrically connected to the second electronic device 105b so that the third rectifier diode D3 is connected. May be provided to adjust the level of the rectified second DC voltage.

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One end of the second capacitor C2 is electrically connected to the second resistor R2, and the other end of the second capacitor C2 is electrically connected to the third rectifying diode D3 and the second electronic device 105b to form a third rectifying diode D3. And a second DC voltage rectified through the second resistor R2 and adjusted at a level, and supplied to the second electronic device 105b.

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The DC voltage feedback unit 106 converts the AC voltage from the AC / DC converter 104 when the electronic device 105 is turned on by the converted DC voltage output from the AC / DC converter 104. It may be provided to receive the converted one DC voltage of the at least one DC voltage fed back to the PWM controller IC (101).

More specifically, the DC voltage feedback unit 106 may include a DC voltage feedback unit 106a, a DC voltage discharge unit 106b, and the like.

The DC voltage feedback means 106a is electrically connected to the AC / DC converter 104 when the electronic device 105 is turned on by the converted DC voltage output from the AC / DC converter 104. And the level of the converted one DC voltage among the converted one or more DC voltages output from the AC / DC converter 104 may be provided to supply the feedback voltage supply unit 108.

That is, the DC voltage feedback means 106a may include feedback resistors R3 and R4, drive ICs SW1 and D4, first zener diode ZD1, and the like.

The feedback resistors R3 and R4 are electrically connected to the AC / DC converter 104 and the electronic device 105, and are converted into one DC voltage output from the AC / DC converter 104. ) May be provided to adjust the level of the converted one DC voltage among the converted at least one DC voltage output from the AC / DC converter 104.

In this case, the feedback resistors R3 and R4 may be provided including the third and fourth resistors R3 and R4 connected in series with each other.

One end of the driving ICs SW1 and D4 is electrically connected to the feedback resistors R3 and R4, and the other end thereof is electrically connected to the feedback voltage supply unit 108 so that the level of the DC voltage is increased by the feedback resistors R3 and R4. While rectifying the regulated converted DC voltage, it may be provided to supply the rectified converted DC voltage to the feedback voltage supply 108.

That is, the driving ICs SW1 and D4 may be provided including the fourth rectifying diode D4 and the first switching device SW1.

One end of the fourth rectifier diode D4 is electrically connected to one end of the feedback resistors R3 and R4, and the other end thereof is electrically connected to the other end of the feedback resistors R3 and R4 so as to be connected by the feedback resistors R3 and R4. The level of the DC voltage may be provided to rectify the adjusted converted DC voltage.

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The first switching device SW1 has a first end electrically connected to the fourth rectifier diode D4, a second end electrically connected to one end of the feedback voltage supply unit 108, and a third end of the first switching element SW1. Electrically connected to the other end of 108, and synchronized with the fourth rectifying diode D4 to provide the converted one DC voltage rectified by the fourth rectifying diode D4 to the feedback voltage supply 108. There is a number.

Here, the first switching element SW1 is a MOSFET (Metal-Oxide Semiconductor Field Effect Transistor), BJT to reduce the power consumption by efficiently supplying the switching operation voltage at the time of power supply while considering the switching loss rate during the switching operation. (Bipolar Junction Transistor), Insulated Gate Bipolar Transistor (IGBT), Gate Turn-Off (GTO) thyristor, and MOS Controlled Thyristor (MCT).

The first Zener diode ZD1 has one end electrically connected to the feedback resistors R3 and R4 and the driving ICs SW1 and D4, and the other end is grounded and rectified through the driving ICs SW1 and D4. It can be provided to break down the DC voltage.

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The DC voltage discharge means 106b may be provided to discharge one converted DC voltage output from the AC / DC converter 104 when the electronic device 105 is turned off.

That is, the DC voltage discharge means 106b may be provided including discharge resistors R5, R6, R7, R8, R9, capacitors C2, C3, and the like.

One end of the discharge resistors R5, R6, R7, R8, and R9 is electrically connected to the AC / DC converter 104, the electronic device 105, and the DC voltage feedback means 106a, and the other end is grounded. When 105 is off, the level of the converted one DC voltage is adjusted to discharge the converted one DC voltage output from the AC / DC converter 104.

Here, the discharge resistors R5, R6, R7, R8, and R9 may include fifth, sixth, and seventh resistors R5, R6, and R7 connected in series with each other.

At this time, one end of the eighth resistor R8 is electrically connected to the fifth resistor R5, the electronic device 105, and the DC voltage feedback means 106a, and the other end of the eighth resistor R8 and the sixth resistor R5 and the sixth resistor ( R6) can be electrically connected.

In addition, one DC current of one end of the ninth resistor R9 electrically connected to the eighth resistor R8 and the seventh resistor R7 and the other end electrically connected to the seventh resistor R7 is grounded and converted. The level of the voltage may be further adjusted to the level of another DC voltage to efficiently discharge the converted DC voltage.

One end of the capacitors C2 and C3 is electrically connected to the fifth resistor R5, and the other end thereof is electrically connected to the DC voltage feedback means 106a so that the level of the DC voltage is adjusted by the fifth resistor R5. It can be provided to store and discharge one converted DC voltage.

In this case, the capacitors C2 and C3 may include a second capacitor C2 and a third capacitor C3.

That is, one end of the second capacitor C2 may be electrically connected to the fifth resistor R5, and the other end thereof may be electrically connected to the sixth resistor R6.

In addition, one end of the third capacitor C3 may be electrically connected to the sixth resistor R6, and the other end thereof may be electrically connected to the seventh resistor R7 and the DC voltage feedback means 106a.

The feedback voltage supply unit 108 is a converted one stored in the DC voltage feedback unit 106 when the electronic device 105 is turned on with the converted DC voltage output from the AC / DC converter 104. When the feedback voltage including the DC voltage of and the elevated voltage by the converted one DC voltage supplied from the AC / DC converter 104 is equal to or greater than the preset reference feedback voltage, the feedback voltage is PWM controller IC 101. It is provided to block the supply to.

More specifically, the feedback voltage supply unit 108 may include a feedback voltage storage unit 108a, a feedback voltage switching unit 108b, a feedback voltage supply unit 108c, and the like.

The feedback voltage storage unit 108a converts the DC voltage feedback unit 106 to the DC voltage feedback unit 106 when the electronic device 105 is turned on by the converted DC voltage output from the AC / DC converter 104. It may be provided to adjust and store a level of a feedback voltage including one DC voltage and an elevated voltage by the converted one DC voltage supplied from the AC / DC converter 104.

The feedback voltage storing means 108a receives the regulated and stored feedback voltage, and when the level of the regulated and stored feedback voltage is equal to or greater than the preset reference feedback voltage, the feedback voltage storage unit 108 yields the adjusted and stored feedback voltage to the PWM controller IC 101. It can be provided to block the supply.

That is, the feedback voltage storing means 108a may be provided including a fifth capacitor C5, a twelfth resistor R12, a second zener diode ZD2, and the like.

At least one fifth capacitor C5 is electrically connected to one end of the DC voltage feedback unit 106 and the other end of the at least one fifth capacitor C5 is electrically connected to the other end of the DC voltage feedback unit 106. When the electronic device 105 is turned on with the converted DC voltage outputted from the DC power source, the DC voltage supplied from the DC voltage feedback unit 1060 and the AC / DC converter 104 are supplied. It can be provided to store a feedback voltage including an elevated voltage by the converted one DC voltage.

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The level of the feedback voltage stored in the fifth capacitor C5 is one end of the twelfth resistor R12 electrically connected to one end of the fifth capacitor C5 and the other end is electrically connected to the other end of the fifth capacitor C5. It can be provided to adjust.

One end of the second zener diode ZD2 may be electrically connected to the twelfth resistor R12, and the other end thereof may be electrically connected to the transformer 102.

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The second zener diode ZD2 is controlled by the twelfth resistor R12 to receive and adjust the stored feedback voltage, and when the level of the stored feedback voltage is greater than or equal to a preset reference feedback voltage, the second zener diode ZD2 breaks down the adjusted and stored feedback voltage. It can be provided to block the supply to the PWM controller IC (101).

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The feedback voltage switching means 108b may be electrically connected to the feedback voltage storage means 108a and the transformer 102.

The feedback voltage switching means 108b receives the regulated and stored feedback voltage from the feedback voltage storage means 108a, and when the level of the stored feedback voltage is less than the preset reference feedback voltage, It can be provided to operate the switching turn-on the third switching element (SW3) to be described in.

Thereafter, the feedback voltage switching means 108b receives the input AC voltage of the at least one input AC voltage from the transformer 102 to remove the noise component of the AC voltage to supply the rectified DC voltage and the at least one operating voltage. The operating voltage supplied through the terminals VCC1 and VCC2 and the regulated and stored feedback voltage may be supplied to regulate and supply the regulated feedback voltage to the level of the other feedback voltage and to supply the rectified feedback voltage to the level of the other voltage.

More specifically, the feedback voltage switching means 108b includes a third zener diode ZD3, a fifth rectifying diode D5, a third smoothing capacitor SC3, a third switching element SW3, and terminal resistors R13 and R14. ), A sixth rectifying diode D6, and the like.

The third zener diode ZD3 is electrically connected to the feedback voltage storing means 108a to receive a regulated and stored feedback voltage from the feedback voltage storing means 108a so that the level of the stored feedback voltage is less than the reference feedback voltage. In that case, it can be provided to supply a regulated and stored feedback voltage.

The fifth rectifying diode D5 has one end of which is electrically connected to the transformer 102 and the other end of which is electrically connected to the feedback voltage storing means 108a so that one of at least one input alternating voltage supplied from the transformer 102 is provided. It may be provided to receive and rectify the input AC voltage.

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One end of the third smoothing capacitor SC3 is electrically connected to the fifth rectifying diode D5, and the other end of the third smoothing capacitor SC3 is electrically connected to the feedback voltage storing means 108a and rectified through the fifth rectifying diode D5. It can be provided to remove the noise component of.

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The third switching device SW3 has a first stage electrically connected to the third zener diode ZD3, and a second stage of the third switching element SW3 has a fifth rectifying diode D5, a third smoothing capacitor SC3, and a feedback voltage storing means 108a. ) May be provided to be electrically connected.

The third switching device SW3 is switched on by the regulated and stored feedback voltage and rectified by the fifth rectifying diode D5 and the third smoothing capacitor SC3 to supply a DC voltage and an operating voltage from which noise components are removed. It may be provided to supply an operating voltage supplied through the terminals VCC1 and VCC2 and a regulated and stored feedback voltage.

Here, the at least one operating voltage supply terminal VCC1 and VCC2 may be provided including the first operating voltage supply terminal VCC1 and the second operating voltage supply terminal VCC2.

That is, the first operating voltage supply terminal VCC1 is electrically connected to the feedback voltage storing means 108a and the terminal resistors R13 and R14 and the third switching element SW3 to be described later, so that the third switching element SW3 is connected. ) May be provided to supply a first operating voltage.

In addition, the second operating voltage supply terminal VCC2 is electrically connected to the third switching element SW3, the terminal resistors R13 and R14, and the sixth rectifying diode D6, so that the second operating voltage supply terminal VCC2 is electrically connected to the sixth rectifying diode D6. It can be provided to supply an operating voltage.

Here, the third switching device SW3 is a MOSFET (Metal-Oxide Semiconductor Field Effect Transistor), BJT to reduce the power consumption by efficiently supplying the switching operation voltage at the time of power supply while considering the switching loss rate during the switching operation. (Bipolar Junction Transistor), Insulated Gate Bipolar Transistor (IGBT), Gate Turn-Off (GTO) thyristor, and MOS Controlled Thyristor (MCT).

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One end of the terminal resistors R13 and R14 is electrically connected to at least one of the operating voltage supply terminals VCC1 and VCC2, the feedback voltage storing unit 108a and the at least one third switching element SW3, and at least one of the other ends thereof. May be provided to be electrically connected with the third zener diode ZD3 to adjust the regulated and stored feedback voltage supplied through the feedback voltage storage means 108a to a level of another feedback voltage.

At this time, one end of the terminal resistors R13 and R14 is electrically connected to the operating voltage supply terminals VCC1 and VCC2 and the third switching element SW3, and the other end is electrically connected to the feedback voltage storage means 108a. It may be provided including the thirteenth and fourteenth resistors R13 and R14 connected in parallel.

One end of the sixth rectifier diode D6 is electrically connected to the operating voltage supply terminals VCC1 and VCC2, the third switching element SW3, and the terminal resistors R13 and R14, and the other end thereof is connected to the PWM controller IC 101. It may be provided to rectify and supply a feedback voltage that is electrically connected and adjusted to a level of another feedback voltage.

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The feedback voltage supply means 108c is electrically connected with the feedback voltage switching means 108b and the feedback voltage storing means 108a and the PWM controller IC 101 to supply other rectified voltages supplied through the feedback voltage switching means 108b. It can be provided to store the feedback voltage adjusted to the level of and to supply the PWM controller IC 101 by removing the noise component of the feedback voltage adjusted to the level of the other rectified voltage.

In more detail, the feedback voltage supply means 108c may include a sixth capacitor C6, a fourth smoothing capacitor SC4, and the like.

One end of the sixth capacitor C6 is electrically connected to the feedback voltage switching means 108b and the PWM controller IC 101, and the other end thereof is electrically connected to the feedback voltage storage means 108a to provide the feedback voltage switching means 108b. It can be provided to store the adjusted feedback voltage to the level of the other rectified voltage supplied through.

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The fourth smoothing capacitor SC4 has one end electrically connected to the sixth capacitor C6 and the PWM controller IC 101, and the other end of the fourth smoothing capacitor SC4 is electrically connected to the feedback voltage storage means 108a to a level of another voltage rectified. It may be provided to remove the noise component of the regulated feedback voltage and supply it to the PWM controller IC 101.

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Meanwhile, the power supply device 100 according to the first embodiment of the present invention may be provided to at least one of a PDP TV, an LCD TV, an OLED TV, a 3D PDP TV, a 3D LCD TV, and a 3D OLED TV to supply power. There is a number.

As such, the power supply device 100 according to the first embodiment of the present invention includes a PWM controller IC 101, a transformer 102, an AC / DC converter 104, a DC voltage feedback unit 106, and a feedback voltage. Supply unit 108 and the like.

Therefore, the power supply device 100 according to the first embodiment of the present invention, when the electronic device 105 is turned on, the converted DC voltage and AC / DC stored in the DC voltage feedback unit 106. When the feedback voltage including the elevated voltage by the converted one DC voltage supplied from the converter 104 is equal to or greater than the preset reference feedback voltage, the feedback voltage can be prevented from being supplied to the PWM controller IC 101. do.

Accordingly, in the power supply device 100 according to the first embodiment of the present invention, the explosion-proof of the capacitor provided in at least one of the AC / DC converter 104, the DC voltage feedback unit 106, and the feedback voltage supply unit 108. It is possible to prevent damage to at least one of the electronic components of the AC / DC converter 104, the DC voltage feedback unit 106, and the feedback voltage supply unit 108 while preventing noise caused by noise, thereby reducing maintenance costs. It becomes the number.

≪ Embodiment 2 >

4 is a block diagram showing in detail a power supply apparatus according to a second embodiment of the present invention, Figure 5 is an equivalent circuit diagram showing a power supply apparatus according to a second embodiment of the present invention.

4 and 5, the power supply device 400 according to the second embodiment of the present invention is the same as the power supply device 100 according to the first embodiment of the PWM controller IC 101 and the transformer 102. ), An AC / DC converter 104, a feedback voltage supply unit 108, and the like.

The function of each component corresponding to the power supply device 400 according to the second embodiment of the present invention and the organic relationship therebetween correspond to the power supply device 100 according to the first embodiment. Since the functions of the respective elements and the organic relationship therebetween are the same, respective descriptions thereof will be omitted below.

However, the DC voltage feedback unit 406 of the power supply device 400 according to the second embodiment of the present invention includes a DC voltage including a first DC voltage discharge means 406b1 and a second DC voltage discharge means 406b2. Discharge means 406b and the like.

Here, the functions of the respective components of the DC voltage feedback means 106a corresponding to the DC voltage feedback unit 406 of the power supply device 400 according to the second embodiment of the present invention and the organic relationship therebetween Since is the same as the function of the respective components of the DC voltage feedback means 106a corresponding to the DC voltage feedback unit 106 of the power supply device 100 according to the first embodiment and the organic relationship therebetween, Each description of this will be omitted below.

More specifically, the first DC voltage discharge means 406b1 may be provided to discharge the converted DC voltage output from the AC / DC converter 104 when the electronic device 105 is turned off. have.

That is, the first DC voltage discharge means 406b1 may be provided including discharge resistors R5, R6, R7, R8, R9, capacitors C2, C3, and the like.

One end of the discharge resistors R5, R6, R7, R8, and R9 is electrically connected to the AC / DC converter 104, the electronic device 105, and the DC voltage feedback means 106a, and the other end is grounded. When 105 is off, the level of the converted one DC voltage is adjusted to discharge the converted one DC voltage output from the AC / DC converter 104.

Here, the discharge resistors R5, R6, R7, R8, and R9 may include fifth, sixth, and seventh resistors R5, R6, and R7 connected in series with each other.

At this time, one end of the eighth resistor R8 is electrically connected to the fifth resistor R5, the electronic device 105, and the DC voltage feedback means 106a, and the other end of the eighth resistor R8 and the sixth resistor R5 and the sixth resistor ( R6) can be electrically connected.

In addition, one DC current of one end of the ninth resistor R9 electrically connected to the eighth resistor R8 and the seventh resistor R7 and the other end electrically connected to the seventh resistor R7 is grounded and converted. The level of the voltage may be further adjusted to the level of another DC voltage to efficiently discharge the converted DC voltage.

One end of the capacitors C2 and C3 is electrically connected to the fifth resistor R5, and the other end thereof is electrically connected to the DC voltage feedback means 106a so that the level of the DC voltage is adjusted by the fifth resistor R5. It can be provided to store and discharge one converted DC voltage.

In this case, the capacitors C2 and C3 may include a second capacitor C2 and a third capacitor C3.

That is, one end of the second capacitor C2 may be electrically connected to the fifth resistor R5, and the other end thereof may be electrically connected to the sixth resistor R6.

In addition, one end of the third capacitor C3 may be electrically connected to the sixth resistor R6, and the other end thereof may be electrically connected to the seventh resistor R7 and the DC voltage feedback means 106a.

The second DC voltage discharge means 406b2 may be provided to quickly discharge the converted one DC voltage discharged through the first DC voltage discharge means 406b1.

That is, the second DC voltage discharge means 406b2 may be provided including the discharge resistors R10 and R11, the second switching element SW2, the fourth capacitor C4, and the like.

The discharge resistors R10 and R11 may be provided to adjust the level of the converted one DC voltage electrically connected to the first DC voltage discharge means 406b1 and discharged through the first DC voltage discharge means 406b1. .

In this case, the discharge resistors R10 and R11 may be provided including the tenth and eleventh resistors R10 and R11 connected in series with each other.

The second switching element SW2 has a first end electrically connected to the discharge resistors R10 and R11, and a second end of the second switching element SW2 is grounded to the switching turn-on signal supplied through the switching turn-on / turn-off terminal 406b2-1. It may be selectively turned on to be discharged through the first DC voltage discharge means 406b1 and quickly discharged the converted DC voltage whose level of DC voltage is adjusted through the discharge resistors R10 and R11.

Here, the third switching element SW2 is a MOSFET (Metal-Oxide Semiconductor Field Effect Transistor), BJT to reduce the power consumption by efficiently supplying the switching operation voltage at the time of power supply while considering the switching loss rate during the switching operation. (Bipolar Junction Transistor), Insulated Gate Bipolar Transistor (IGBT), Gate Turn-Off (GTO) thyristor, and MOS Controlled Thyristor (MCT).

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One end of the fourth capacitor C4 is electrically connected to the third end of the second switching element SW2 and the switching turn-on / turn-off terminal 406b2-1, and the other end of the fourth capacitor C4 is connected to the second end of the second switching element SW2. When electrically connected to the stage and discharged through the second switching element SW2, the residual converted DC voltage may be stored and discharged during the turn-off operation of the second switching element SW2.

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Meanwhile, the power supply device 400 according to the second embodiment of the present invention may be provided to at least one of a PDP TV, an LCD TV, an OLED TV, a 3D PDP TV, a 3D LCD TV, and a 3D OLED TV to supply power. There is a number.

As such, the power supply device 400 according to the second embodiment of the present invention includes a PWM controller IC 101, a transformer 102, an AC / DC converter 104, a DC voltage feedback unit 406, and a feedback voltage. Supply unit 108 and the like.

Therefore, the power supply device 400 according to the second embodiment of the present invention is the same as the power supply device 100 according to the first embodiment when the electronic device 105 is turned on, the DC voltage feedback unit ( If the feedback voltage including the converted one DC voltage stored in 106 and the increased voltage by the converted one DC voltage supplied from the AC / DC converter 104 is equal to or greater than the reference feedback voltage that is already set, the feedback. The voltage can be blocked from being supplied to the PWM controller IC 101.

Accordingly, the power supply device 400 according to the second embodiment of the present invention is the same as the power supply device 100 according to the first embodiment AC / DC converter 104, DC voltage feedback unit 106 At least one of the AC / DC converter 104, the DC voltage feedback unit 106, and the feedback voltage supply unit 108 while preventing noise caused by explosion of the capacitor provided to at least one of the feedback voltage supply unit 108. Damage to parts can be prevented beforehand, which can reduce maintenance costs.

In addition, since the power supply device 400 according to the second embodiment of the present invention includes the DC voltage feedback unit 406, the discharge voltage can be quickly discharged.

It will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

100, 400: power supply 101: PWM controller IC
102: transformer 104: AC / DC converter
104a: first AC / DC converting means 104b: second AC / DC converting means
105: electronic device 105a: first electronic device
105b: second electronic device 106, 406: DC voltage feedback unit
106a: DC voltage feedback means 106b, 406b: DC voltage discharge means
108: feedback voltage supply unit 108a: feedback voltage storage means
108b: feedback voltage switching means 108c: feedback voltage supply means
406b1: first direct current voltage discharge means 406b2: second direct current voltage discharge means
406b2-1: Switching turn on / turn off terminal

Claims (28)

A PWM controller IC for adjusting a pulse width;
A transformer configured to receive at least one input AC voltage and output a variable at least one AC voltage;
An AC / DC converter which receives the variable at least one alternating voltage output from the transformer and converts the at least one alternating voltage into at least one direct current voltage to provide the converted at least one direct current voltage to an electronic device;
One DC of the converted at least one DC voltage output from the AC / DC converter when the electronic device is turned on with the converted DC voltage output from the AC / DC converter A DC voltage feedback unit receiving a voltage and feeding back the PWM controller IC; And
When the electronic device is turned on by the converted single DC voltage output from the AC / DC converter, the converted DC voltage stored in the DC voltage feedback unit is supplied from the AC / DC converter. A power supply including a feedback voltage supply to block the feedback voltage from being supplied to the PWM controller IC when the feedback voltage including the elevated voltage by the converted one DC voltage is equal to or greater than a preset reference feedback voltage. .
The method of claim 1,
The electronic device comprises a first electronic device and a second electronic device;
The AC / DC converter,
A first AC voltage of the at least one variable AC voltage output from one end of the output side of the transformer is received and converted into a first DC voltage of the at least one DC voltage, thereby converting the DC voltage corresponding to the converted DC voltage First AC / DC conversion means for providing a first direct current voltage to the first electronic device; And
Receiving a second alternating voltage among the at least one alternating alternating voltage output from the other end of the output side of the transformer and converting the converted second DC voltage into a second DC voltage among the at least one DC voltages to convert the converted second DC voltage to the second electron; A power supply comprising a second AC / DC conversion means provided to the device.
The method of claim 2,
The first AC / DC conversion means,
Electrically connected to one end of the output side of the transformer to rectify the first AC voltage among the at least one alternating AC voltage output from the output end of the transformer to output the first DC voltage of the at least one DC voltage A rectifying diode;
A first resistor having one end electrically connected to one end of an output side of the transformer and the rectifying diode, and the other end electrically connected to the first electronic device to adjust the level of the first DC voltage rectified through the rectifying diode; ;
One end is electrically connected to the first resistor, and the other end is electrically connected to the rectifier diode and the first electronic device to be rectified through the rectifier diode and the first resistor to store a first DC voltage whose level is adjusted. A first capacitor provided to the first electronic device; And
One end is electrically connected to the first capacitor, the rectifier diode, and the first electronic device, and the other end is grounded to remove the noise component corresponding to the rectified, level-adjusted first DC voltage stored in the first capacitor. A power supply comprising a smoothing capacitor.
The method of claim 3, wherein
The rectifier diode includes a first and a second rectifier diode connected in parallel with each other.
The method of claim 3, wherein
The smoothing capacitor includes a first and a second smoothing capacitor connected in parallel with each other.
The method of claim 2,
The second AC / DC conversion means,
Electrically connected to the other end of the output side of the transformer to rectify the second AC voltage among the at least one variable AC voltage output from the other end of the transformer to output the second DC voltage of the at least one DC voltage; A third rectifying diode;
One end of which is electrically connected to the other end of the output side of the transformer and the third rectifying diode, and the other end of which is electrically connected to the second electronic device to adjust the level of the second DC voltage rectified through the third rectifying diode. Second resistance; And
A second end of which is electrically connected to the second resistor and the other end of which is electrically connected to the third rectifying diode and the second electronic device and rectified through the third rectifying diode and the second resistor to control a level; And a second capacitor that stores a DC voltage and provides the same to the second electronic device.
The method of claim 1,
The DC voltage feedback unit,
When the electronic device is turned on by the converted DC voltage output from the AC / DC converter, the converted AC / DC converter is electrically connected to the AC / DC converter. DC voltage feedback means for regulating the level of the converted DC voltage among at least one DC voltage and providing the feedback voltage to the feedback voltage supply unit; And
And a direct current voltage discharge means for discharging said converted direct current voltage output from said AC / DC converter when said electronic device is turned off.
8. The method of claim 7,
The DC voltage discharge means,
First DC voltage discharge means for discharging said converted DC voltage output from said AC / DC converter when said electronic device is turned off; And
And a second DC voltage discharge means for quickly discharging the converted one DC voltage discharged through the first DC voltage discharge means.
8. The method of claim 7,
The DC voltage feedback means,
The AC / DC converter is electrically connected to the AC / DC converter and the electronic device, and when the electronic device is turned on by the converted DC voltage output from the AC / DC converter. A resistor for adjusting a level of the converted one DC voltage among the converted at least one DC voltages;
The rectified one is rectified while one end is electrically connected to the resistor and the other end is electrically connected to the feedback voltage supply to rectify the converted one DC voltage whose level of DC voltage is adjusted by the resistance. A driving IC for providing a DC voltage to the feedback voltage supply unit; And
And a first zener diode, one end of which is electrically connected to the resistor and the driving IC and the other end of which is grounded to yield the converted one DC voltage rectified through the driving IC.
The method of claim 9,
And the resistors comprise third and fourth resistors connected in series with each other.
The method of claim 9,
The driving IC,
A fourth rectifying diode having one end electrically connected to one end of the resistor and the other end electrically connected to the other end of the resistor to rectify the converted one DC voltage whose level of DC voltage is adjusted by the resistance; And
A first end is electrically connected to the fourth rectifier diode, a second end is electrically connected to one end of the feedback voltage supply unit, a third end is electrically connected to the other end of the feedback voltage supply unit, and the fourth And a first switching element synchronized with the rectifier diode to provide the converted one DC voltage rectified by the fourth rectifier diode to the feedback voltage supply.
12. The method of claim 11,
Wherein the first switching element comprises:
Power supply including at least one of a metal-oxide semiconductor field effect transistor (MOSFET), a bipolar junction transistor (BJT), an insulated gate bipolar transistor (IGBT), a gate turn-off (GTO) thyristor, and a MOS controlled thyristor (MCT) .
8. The method of claim 7,
The DC voltage discharge means,
The converted output from the AC / DC converter when one end is electrically connected to the AC / DC converter, the electronic device, and the DC voltage feedback means, and the other end is grounded to turn off the electronic device. A feedback resistor for adjusting the level of the converted one DC voltage to discharge one DC voltage; And
A capacitor having one end electrically connected to the feedback resistor and the other end electrically connected to the DC voltage feedback means to store and discharge the converted one DC voltage whose level of DC voltage is adjusted by the feedback resistor. Power supply.
The method of claim 8,
The first DC voltage discharge means,
The converted output from the AC / DC converter when one end is electrically connected to the AC / DC converter, the electronic device, and the DC voltage feedback means, and the other end is grounded to turn off the electronic device. A feedback resistor for adjusting the level of the converted one DC voltage to discharge one DC voltage; And
A capacitor having one end electrically connected to the feedback resistor and the other end electrically connected to the DC voltage feedback means to store and discharge the converted one DC voltage whose level of DC voltage is adjusted by the feedback resistor. Power supply.
The method according to claim 13 or 14,
The feedback resistance is,
Fifth, sixth, and seventh resistors connected in series with each other; And
And an eighth resistor, one end of which is electrically connected to the fifth resistor and the electronic device and the DC voltage feedback means, and the other end of which comprises an eighth resistor electrically connected to the fifth resistor and the sixth resistor.
16. The method of claim 15,
The fifth resistor is,
And a ninth resistor having one end electrically connected to the eighth resistor and the seventh resistor, and the other end electrically connected to the seventh resistor and grounded.
The method according to claim 13 or 14,
The feedback resistance is,
Fifth, sixth, and seventh resistors connected in series with each other; And
One end of which is electrically connected with the fifth resistor and the electronic device and the DC voltage feedback means, and the other end includes an eighth resistor that is electrically connected with the fifth resistor and the sixth resistor;
The capacitor,
A second capacitor having one end electrically connected to the fifth resistor and the other end electrically connected to the sixth resistor; And
And a third capacitor having one end electrically connected to the sixth resistor and the other end electrically connected to the seventh resistor and the DC voltage feedback means.
The method of claim 8,
The second DC voltage discharge means,
A discharge resistor electrically connected to the first DC voltage discharge means to adjust a level of the converted DC voltage discharged through the first DC voltage discharge means;
A first stage is electrically connected to the discharge resistor, a second stage is grounded and selectively turned on to a switching turn-on signal supplied through a switching turn-on / turn-off terminal, and is discharged through the first DC voltage discharge means; A second switching element for rapidly discharging the converted one DC voltage whose level of the DC voltage is adjusted through a discharge resistance; And
When one end is electrically connected to the third end of the second switching element and the switching turn on / turn-off terminal, and the other end is electrically connected to the second end of the second switching element to discharge through the second switching element. And a fourth capacitor storing the converted one DC voltage and discharging the second DC voltage during a turn-off operation of the second switching device.
19. The method of claim 18,
The discharge resistor includes a tenth and eleventh resistors connected in series with each other.
19. The method of claim 18,
The second switching device,
Power supply including at least one of a metal-oxide semiconductor field effect transistor (MOSFET), a bipolar junction transistor (BJT), an insulated gate bipolar transistor (IGBT), a gate turn-off (GTO) thyristor, and a MOS controlled thyristor (MCT) .
The method of claim 1,
The feedback voltage supply unit,
When the electronic device is turned on by the converted single DC voltage output from the AC / DC converter, the converted DC voltage stored in the DC voltage feedback unit is supplied from the AC / DC converter. Adjust and store the level of the feedback voltage including the increased voltage by the converted one DC voltage, and receive the adjusted and stored feedback voltage when the level of the regulated and stored feedback voltage is equal to or greater than the preset reference feedback voltage. Feedback voltage storing means for surrendering the regulated and stored feedback voltage to block supply to the PWM controller IC;
The regulated and stored feedback voltage is electrically connected to the feedback voltage storage means and the transformer to receive the regulated and stored feedback voltage from the feedback voltage storage means, and when the level of the regulated and stored feedback voltage is less than the preset reference feedback voltage, A switching turn-on operation is performed with a stored feedback voltage, and a rectified DC voltage and at least one operating voltage supply terminal are supplied by receiving an input AC voltage of the at least one input AC voltage from the transformer to remove noise components of the AC voltage. Feedback voltage switching means for supplying an operating voltage and the regulated and stored feedback voltage supplied through the control unit, regulating to a level of another feedback voltage and rectifying and providing a feedback voltage adjusted to the level of the other voltage; And
A feedback voltage electrically connected to the feedback voltage switching means, the feedback voltage storage means and the PWM controller IC to store a regulated feedback voltage at a level of another rectified voltage supplied through the feedback voltage switching means, and the rectified other voltage And a feedback voltage supply means for removing the noise component of the feedback voltage adjusted to the level of the feedback voltage and providing the same to the PWM controller IC.
22. The method of claim 21,
The feedback voltage storage means,
One end is electrically connected to one end of the DC voltage feedback part, and the other end is electrically connected to the other end of the DC voltage feedback part to turn on the electronic device with the converted DC voltage output from the AC / DC converter. And a fifth capacitor for storing a feedback voltage including a converted DC voltage stored in the DC voltage feedback unit and an elevated voltage of the converted DC voltage supplied from the AC / DC converter. Wow;
A twelfth resistor having one end electrically connected to one end of the fifth capacitor and the other end electrically connected to the other end of the fifth capacitor to adjust a level of the feedback voltage stored in the fifth capacitor; And
One end is electrically connected to the twelfth resistor, and the other end is electrically connected to the transformer to receive the feedback voltage regulated and stored by the twelfth resistor so that the level of the regulated and stored feedback voltage is set to the already set reference feedback voltage. In case of abnormality, a power supply device including a second zener diode which breaks down the regulated and stored feedback voltage and blocks it from being supplied to the PWM controller IC.
22. The method of claim 21,
The feedback voltage switching means,
The regulated and stored feedback voltage is electrically connected to the feedback voltage storage means to receive the regulated and stored feedback voltage from the feedback voltage storage means and the level of the regulated and stored feedback voltage is less than the preset reference feedback voltage. A third zener diode to provide;
A fifth rectifying diode, one end of which is electrically connected to the transformer and the other end of which is electrically connected to the feedback voltage storage means to receive and rectify an input AC voltage of the at least one input AC voltage supplied from the transformer; ;
A third smoothing capacitor, one end of which is electrically connected to the fifth rectifying diode and the other end of which is electrically connected to the feedback voltage storing means to remove noise components of the DC voltage rectified through the fifth rectifying diode;
A first stage is electrically connected to the third zener diode and a second stage is electrically connected to the fifth rectifying diode, the third smoothing capacitor and the feedback voltage storage means, and switching on the regulated stored feedback voltage. And supplying a regulated stored feedback voltage and a DC voltage which is operated and rectified through the fifth rectifying diode and the third smoothing capacitor to remove noise components, and an operating voltage supplied through the at least one operating voltage supply terminal. 3 switching elements;
The regulation, one end of which is electrically connected to the at least one operating voltage supply terminal and the feedback voltage storage means and the third switching element, and the other end of which is electrically connected to the third zener diode and supplied through the feedback voltage storage means. A terminal resistor for adjusting the stored feedback voltage to a level of another feedback voltage; And
One end is electrically connected to the at least one operating voltage supply terminal, the third switching element, and the terminal resistor, and the other end is electrically connected to the PWM controller IC to rectify the feedback voltage regulated to the level of the other feedback voltage. A power supply comprising a sixth rectifier diode provided by.
24. The method of claim 23,
The third switching device includes:
Power supply including at least one of a metal-oxide semiconductor field effect transistor (MOSFET), a bipolar junction transistor (BJT), an insulated gate bipolar transistor (IGBT), a gate turn-off (GTO) thyristor, and a MOS controlled thyristor (MCT) .
24. The method of claim 23,
The at least one operating voltage supply terminal,
A first operating voltage supply terminal electrically connected to the feedback voltage storing means, the terminal resistor, and the third switching element to provide a first operating voltage to the third switching element; And
And a second operating voltage supply terminal electrically connected to the third switching element, the terminal resistor, and the sixth rectifying diode to provide a second operating voltage to the sixth rectifying diode.
24. The method of claim 23,
The terminal resistance is,
And a thirteenth and fourteenth resistors of which one end is electrically connected to the operating voltage supply terminal and the third switching element, and the other end is electrically connected to the feedback voltage storage means and connected in parallel with each other.
22. The method of claim 21,
The feedback voltage supply means,
A feedback voltage, one end of which is electrically connected to the feedback voltage switching means and the PWM controller IC, and the other end of which is electrically connected to the feedback voltage storage means and regulated to a level of another rectified voltage supplied through the feedback voltage switching means. A sixth capacitor for storing the; And
One end is electrically connected to the sixth capacitor and the PWM controller IC, and the other end is electrically connected to the feedback voltage storage means to remove the noise component of the feedback voltage adjusted to the level of the rectified other voltage so that the PWM controller A power supply comprising a fourth smoothing capacitor provided to the IC.
The method of claim 1,
The power supply device includes:
Power supply for supplying at least one of PDP TV, LCD TV, OLED TV, 3D PDP TV, 3D LCD TV, 3D OLED TV.

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