CN201178462Y - Low power consumption standby power source circuit - Google Patents
Low power consumption standby power source circuit Download PDFInfo
- Publication number
- CN201178462Y CN201178462Y CNU200820093450XU CN200820093450U CN201178462Y CN 201178462 Y CN201178462 Y CN 201178462Y CN U200820093450X U CNU200820093450X U CN U200820093450XU CN 200820093450 U CN200820093450 U CN 200820093450U CN 201178462 Y CN201178462 Y CN 201178462Y
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- Prior art keywords
- power supply
- power
- mcu
- consumption standby
- terminal voltage
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Abstract
The utility model discloses a low power consumption stand-by power circuit which comprises a control circuit composed of a power module and an MCU, wherein the power module comprises a main power supply Vin2 and an auxiliary power supply Vin1 which are respectively connected with a three-end stabilivolt; the output end of the three-end stabilivolt is connected with the MCU to provide power to the MCU; in addition, an electronic switch is also connected between the MCU and the main power supply Vin2, and the MCU controls the power supply of the main power supply Vin2 through the electronic switch. Under the stand-by state, the main power supply Vin2 is disconnected, only the auxiliary power supply Vin1 with very small output power works, therefore, the stand-by power consumption of the power supply can be effectively reduced; simultaneously, the production cost is reduced because of the simple structure of the circuit.
Description
[technical field]
The utility model relates to power technique fields, particularly a kind of low power consumption standby power supply circuit.
[background technology]
At present, a lot of countries have all implemented mandatory provision to the power supply standby power.Wherein, European Union and the U.S. require the power supply stand-by power consumption of television product to be lower than 3W, as are lower than 1W and then can be designated green power supply.The power supply stand-by power consumption of the also clear and definite television product from now on of China must be lower than the mandatory requirement of 5W, and the trend of further strict demand is arranged.For adapting to this requirement, power supply standby low-power consumption scheme is to use aiding CPU to come managing electrical power usually.Yet use aiding CPU to come this method of managing electrical power not only to make power circuit comparatively complicated, and cost is higher.
[novel content]
For addressing the above problem, main purpose of the present utility model is to provide a kind of circuit simple and lower-cost low power consumption standby power supply circuit.
For achieving the above object, the technical scheme of this creation is:
A kind of low power consumption standby power supply circuit includes the control loop that power module and MCU form, and wherein, power module includes main power source V
In2With auxiliary power V
In1, described major and minor power supply is connected with a three-terminal voltage-stabilizing pipe respectively; The output of described three-terminal voltage-stabilizing pipe connects MCU, to power to MCU; In addition, MCU and main power source V
In2Between also be connected to electronic switch, MCU is by this electronic switch control main power source V
In2Power supply.
Further, described main power source V
In2Be the big power supply of power output, and described auxiliary power V
In1Be the very little power supply of power output; This major and minor power supply is connected to the three-terminal voltage-stabilizing pipe by first, second diode respectively.
Further, described first, second diode is the isolated from power diode, and its positive pole connects major and minor power supply respectively, and negative pole is connected to the three-terminal voltage-stabilizing pipe.
Compared to prior art, the utility model low power consumption standby power supply circuit under holding state, main power source V
In2Disconnect, have only the very little auxiliary power V of power output
In1Work, thus effectively reduce the stand-by power consumption of power supply, and circuit structure is simple, has reduced production cost.
[description of drawings]
Fig. 1 is the utility model low power consumption standby power supply circuit theory diagrams.
[embodiment]
Please refer to shown in Figure 1ly, a kind of low power consumption standby power supply circuit of the utility model includes the control loop that power module and MCU form, and wherein, power module mainly includes main power source V
In2With auxiliary power V
In1Described main power source V
In2Be the big power supply of power output, it links to each other with a three-terminal voltage-stabilizing pipe by first diode; And described auxiliary power V
In1Be the very little power supply of power output, it links to each other with described three-terminal voltage-stabilizing pipe by second diode; The output of this three-terminal voltage-stabilizing pipe is connected to MCU, to power to MCU.In addition, MCU and main power source V
In2Between also be connected to electronic switch, MCU is by this electronic switch control main power source V
In2Power supply.
Described first, second diode is the isolated from power diode, and its positive pole connects major and minor power supply respectively, and negative pole is connected to the three-terminal voltage-stabilizing pipe.In addition, the negative pole of this first, second diode also is connected with one first electric capacity; The output of three-terminal voltage-stabilizing pipe also is connected with one second electric capacity; Described first, second electric capacity is electrochemical capacitor, and its other end ground connection is with as filter capacitor.
During holding state, main power source V
In2Stop power supply, i.e. V
In2Be zero, and auxiliary power V
In1Power supply, it is V through the three-terminal voltage-stabilizing pipe with voltage transitions through second diode continuousing flow
0,, make MCU keep work with to the MCU power supply.Standby finishes, and when starting shooting to normal operating conditions, MCU makes main power source Vin2 start working Vin by electronic switch
2No longer be zero, the equal conducting of first, second diode.At this moment, main power source V
In2Voltage V
In2Greater than auxiliary power V
In1Voltage V
In1, by the electric current I of first diode
2Greater than electric current I by second diode
1, at this moment, the electric current of three-terminal voltage-stabilizing pipe is mainly by main power source V
In2Electric current I
2The television set operate as normal is provided.
Because auxiliary power V
In1For the very little power supply of power output, when holding state, only depend on auxiliary power V
In1To the MCU power supply, thereby realized the holding state low-power consumption, circuit structure is simple, and cost is lower.
Most preferred embodiment described above only is that the utility model is set forth and illustrated, but is not limited to disclosed any concrete form, and it is possible carrying out many modifications and variations.
Claims (5)
1. a low power consumption standby power supply circuit includes the control loop that power module and MCU form, and it is characterized in that: power module includes main power source V
In2With auxiliary power V
In1, described major and minor power supply is connected with a three-terminal voltage-stabilizing pipe respectively; The output of described three-terminal voltage-stabilizing pipe connects MCU, to power to MCU; In addition, MCU and main power source V
In2Between also be connected to electronic switch, MCU is by this electronic switch control main power source V
In2Power supply.
2. low power consumption standby power supply circuit as claimed in claim 1 is characterized in that: described main power source V
In2Be the big power supply of power output, and described auxiliary power V
In1Be the very little power supply of power output; This major and minor power supply is connected to the three-terminal voltage-stabilizing pipe by first, second diode respectively.
3. low power consumption standby power supply circuit as claimed in claim 2 is characterized in that: described first, second diode is the isolated from power diode, and its positive pole connects major and minor power supply respectively, and negative pole is connected to the three-terminal voltage-stabilizing pipe.
4. low power consumption standby power supply circuit as claimed in claim 3 is characterized in that: the negative pole of described first, second diode also is connected with one first electric capacity; And the output of three-terminal voltage-stabilizing pipe also is connected with one second electric capacity.
5. low power consumption standby power supply circuit as claimed in claim 4 is characterized in that: described first, second electric capacity is electrochemical capacitor, its other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820093450XU CN201178462Y (en) | 2008-04-16 | 2008-04-16 | Low power consumption standby power source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820093450XU CN201178462Y (en) | 2008-04-16 | 2008-04-16 | Low power consumption standby power source circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201178462Y true CN201178462Y (en) | 2009-01-07 |
Family
ID=40218484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820093450XU Expired - Fee Related CN201178462Y (en) | 2008-04-16 | 2008-04-16 | Low power consumption standby power source circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201178462Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111002A (en) * | 2011-02-22 | 2011-06-29 | 无锡东海新能源科技有限公司 | Device and method for realizing micro power consumption in hibernate state |
| WO2014177056A1 (en) * | 2013-05-02 | 2014-11-06 | 珠海格力电器股份有限公司 | Low-power consumption standby circuit device, air conditioner and control method for air conditioner |
| CN104375447A (en) * | 2014-11-28 | 2015-02-25 | 无锡市电子仪表工业有限公司 | Low-power-consumption standby circuit of vehicle-mounted player |
| CN102256087B (en) * | 2011-07-12 | 2016-09-07 | 青岛海信电器股份有限公司 | A kind of low-power consumption standby circuit and television set |
| CN106060904A (en) * | 2016-04-13 | 2016-10-26 | 卓荣集成电路科技有限公司 | Power supply management system and method for bluetooth chip |
| CN106547243A (en) * | 2017-01-10 | 2017-03-29 | 湖北巴东博宇工贸有限公司 | Alternating-current charging pile controls panel control system |
-
2008
- 2008-04-16 CN CNU200820093450XU patent/CN201178462Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102111002A (en) * | 2011-02-22 | 2011-06-29 | 无锡东海新能源科技有限公司 | Device and method for realizing micro power consumption in hibernate state |
| CN102111002B (en) * | 2011-02-22 | 2013-01-30 | 无锡东海新能源科技有限公司 | Device and method for realizing micro power consumption in hibernate state |
| CN102256087B (en) * | 2011-07-12 | 2016-09-07 | 青岛海信电器股份有限公司 | A kind of low-power consumption standby circuit and television set |
| WO2014177056A1 (en) * | 2013-05-02 | 2014-11-06 | 珠海格力电器股份有限公司 | Low-power consumption standby circuit device, air conditioner and control method for air conditioner |
| US9939166B2 (en) | 2013-05-02 | 2018-04-10 | Gree Electric Appliances Inc. | Low-power consumption standby circuit device, air conditioner and control method for air conditioner |
| CN104375447A (en) * | 2014-11-28 | 2015-02-25 | 无锡市电子仪表工业有限公司 | Low-power-consumption standby circuit of vehicle-mounted player |
| CN106060904A (en) * | 2016-04-13 | 2016-10-26 | 卓荣集成电路科技有限公司 | Power supply management system and method for bluetooth chip |
| CN106547243A (en) * | 2017-01-10 | 2017-03-29 | 湖北巴东博宇工贸有限公司 | Alternating-current charging pile controls panel control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20140416 |