CN103973101A - Novel DC-DC power adapter - Google Patents
Novel DC-DC power adapter Download PDFInfo
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- CN103973101A CN103973101A CN201410217685.5A CN201410217685A CN103973101A CN 103973101 A CN103973101 A CN 103973101A CN 201410217685 A CN201410217685 A CN 201410217685A CN 103973101 A CN103973101 A CN 103973101A
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- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 claims description 3
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Abstract
The invention discloses a novel DC-DC power adapter. The novel DC-DC power adapter has the function of automatic switching between a standby electricity-saving mode and a normal operation mode, a DC-DC voltage transformation circuit stops working when a direct-current output interface is not connected with an electricity utilization load, a low-power-consumption starting circuit can trigger the whole power adapter to enter a normal work mode when the electricity utilization load is connected to the direct-current output interface, the DC-DC voltage transformation circuit outputs direct currents after voltage transformation, and an external direct-current power supply provides electricity for the electricity utilization load through the DC-DC power adapter. When the novel DC-DC power adapter is in an electricity-saving mode, only the low-power-consumption starting circuit consumes electricity, power consumption of the low-power-consumption starting circuit is low, electricity of the external direct-current power supply is effectively saved, and the standby time is prolonged.
Description
[technical field]
The present invention relates to a kind of novel DC-DC power supply adaptor.
[background technology]
Along with the change of people's living standard, various digital products are more and more, along with the function increasing action of large-size screen monitors smart mobile phone is increasing, use also further frequent, the service time of battery is just shorter and shorter, may run into the digital products such as mobile phone and not have electricity, and outing or drive by bike to wait and have the battery pack of high voltage large capcity will be to the just too busy to get away power supply adaptor of digital product charging out of doors, present various power supply adaptor is to be built in dynamic lithium battery group as being built in battery of electric bicycle group inside a bit, some needs external power adapter, but power supply adaptor come what may itself has from power consumption, and power adapter circuit power consumption is generally all at milliampere rank (2-3mA), power consumption is large, the battery pack of a 10Ah is connected with power supply adaptor, without the external electric loading of using, even if the full electricity of battery pack itself also can having remained little at six months internal consumption.
Therefore, be necessary to solve as above problem.
[summary of the invention]
The present invention has overcome the deficiency of above-mentioned technology, and a kind of novel DC-DC power supply adaptor is provided, and its design is ingenious, power-saving control function while having without external use electric loading, the stand-by power consumption while effectively reducing useless electric loading.
For achieving the above object, the present invention has adopted following technical proposal:
A kind of novel DC-DC power supply adaptor, include the direct current input interface 1 connecting in turn for external direct current power supply, DC-DC transforming circuit 2, and for exporting galvanic direct current output interface 3 after transformation, the controlled anodal output switch circuit 4 disconnecting while being connected with for conducting when the DC-DC transforming circuit 2DC-DC transformation and non-DC-DC transformation between described DC-DC transforming circuit 2 cathode output ends and direct current output interface 3 anode connection terminal, the controlled negative pole output switch circuit 5 disconnecting while being connected with for conducting when the DC-DC transforming circuit 2DC-DC transformation and non-DC-DC transformation between DC-DC transforming circuit 2 cathode output ends and direct current output interface 3 negative pole links, described controlled negative pole output switch circuit 5 control signal inputs are connected with DC-DC transforming circuit 2 cathode output ends, the controlled input switching circuit 6 disconnecting when being connected with when being connected to by electric loading at direct current output interface 3 conducting between described direct current input interface 1 and DC-DC transforming circuit 2 and not being connected to by electric loading, described controlled input switching circuit 6 control signal inputs are connected with direct current output interface 3 negative pole links, on described direct current input interface 1, be also connected with the low-power consumption start-up circuit 7 that drives controlled input switching circuit 6 conductings when being connected to by electric loading at direct current output interface 3, described low-power consumption start-up circuit 7 enabling signal outputs are connected with direct current output interface 3 anode connection terminal, between described direct current input interface 1 and DC-DC transforming circuit 2, be also connected with and detect DC-DC transforming circuit 2 input size of current and maintain controlled input switching circuit 6 conductings and controlled anodal output switch circuit 4 conductings of control when being connected to electric loading at direct current output interface 3, and be not connected to the current detecting and the control circuit 8 that disconnect with the controlled anodal output switch circuit 4 of electric loading time control system at direct current output interface 3, described current detecting and control circuit 8 control signal outputs are connected with controlled anodal output switch circuit 4 control signal inputs, current detecting and control circuit 8 maintain signal output part and maintain signal input part with controlled input switching circuit 6 and be connected.
It is the DC-DC voltage conversion circuit of LM25010 that described DC-DC transforming circuit 2 adopts chip model.
Described controlled anodal output switch circuit 4 includes PMOS pipe Q6, NMOS manages Q2, resistance R 20～R22, and capacitor C 15, the drain electrode of described PMOS pipe Q6 is connected with DC-DC transforming circuit 2 cathode output ends as controlled anodal output switch circuit 4 switch one links, after being connected with resistance R 20 one end, the source electrode of PMOS pipe Q6 is connected with direct current output interface 3 anode connection terminal as controlled anodal another link of output switch circuit 4 switches, after being connected with resistance R 20 other ends, the grid of PMOS pipe Q6 is connected with the drain electrode of NMOS pipe Q2 by resistance R 21, source electrode and resistance R 22 one end of NMOS pipe Q2, after being connected, capacitor C 15 one end are connected with direct current input interface 1 negative pole link, grid and resistance R 22 other ends of NMOS pipe Q2, after being connected, capacitor C 15 other ends are connected with current detecting and control circuit 8 control signal outputs as controlled anodal output switch circuit 4 control signal inputs.
Described controlled negative pole output switch circuit 5 includes NMOS pipe Q4, resistance R 9～R10, and capacitor C 11, source electrode and resistance R 9 one end of described NMOS pipe Q4, after being connected, capacitor C 11 one end are connected with DC-DC transforming circuit 2 cathode output ends as controlled negative pole output switch circuit 5 switch one links, the drain electrode of NMOS pipe Q4 is connected with direct current output interface 3 negative pole links as controlled another link of negative pole output switch circuit 5 switches, grid and resistance R 9 other ends of NMOS pipe Q4, capacitor C 11 other ends, resistance R 10 one end are connected, resistance R 10 other ends are connected with DC-DC transforming circuit 2 cathode output ends as controlled negative pole output switch circuit 5 control signal inputs.
Current detecting as above and control circuit 8 are connected between direct current input interface 1 and controlled input switching circuit 6.
Described controlled input switching circuit 6 includes PMOS pipe Q5, NMOS manages Q3, resistance R 5～R8, voltage-stabiliser tube ZD2, diode D3, and capacitor C 10, described PMOS pipe Q5 source electrode and voltage-stabiliser tube ZD2 negative pole, after being connected, resistance R 6 one end are connected with current detecting and control circuit 8 current output terminals as controlled input switching circuit 6 switch one links, PMOS pipe Q5 drain electrode is connected with DC-DC transforming circuit 2 electrode input ends as controlled another link of input switching circuit 6 switches, DC-DC transforming circuit 2 negative inputs connect direct current input interface 1 negative pole link, PMOS pipe Q5 grid and resistance R 6 one end, voltage-stabiliser tube ZD2 positive pole, resistance R 5 one end are connected, resistance R 6 other ends are connected with direct current input interface 1 anode connection terminal, resistance R 5 other ends are connected with NMOS pipe Q3 drain electrode, NMOS pipe Q3 source electrode and resistance R 7 one end, capacitor C 10 one end, after being connected, resistance R 8 one end are connected with direct current input interface 1 negative pole link, NMOS pipe Q3 grid and resistance R 7 other ends, capacitor C 10 other ends, after diode D3 negative pole is connected, maintaining signal input part as controlled input switching circuit 6 maintains signal output part with current detecting and control circuit 8 and is connected, diode D3 positive pole is connected with direct current output interface 3 negative pole links as controlled input switching circuit 6 control signal inputs.
Described low-power consumption start-up circuit 7 includes resistance R 2, resistance R 12, capacitor C 5, voltage-stabiliser tube ZD1, and diode D6, described resistance R 2 one end are connected with direct current input interface 1 anode connection terminal, resistance R 2 other ends and voltage-stabiliser tube ZD1 negative pole, diode D6 positive pole is connected, after being connected with capacitor C 5 one end, voltage-stabiliser tube ZD1 positive pole is connected with direct current input interface 1 negative pole link, capacitor C 5 other ends are connected with resistance R 12 one end, after being connected with diode D6 negative pole, resistance R 12 other ends are connected with direct current output interface 3 anode connection terminal as low-power consumption start-up circuit 7 enabling signal outputs.
Described current detecting and control circuit 8 include diode D5, resistance R 1, resistance R 3～R4, PNP triode Q1, and diode D1～D2, described diode D5 positive pole and resistance R 1 one end, after being connected, PNP triode Q1 emitter is connected with direct current input interface 1 anode connection terminal as current detecting and control circuit 8 current input terminals, diode D5 negative pole and resistance R 1 other end, after being connected, PNP triode Q1 base stage is connected with controlled input switching circuit 6 switch one links as current detecting and control circuit 8 current output terminals, described PNP triode Q1 collector electrode is connected with resistance R 3 one end, resistance R 3 other ends and R4 one end, diode D1 positive pole, diode D2 positive pole is connected, resistance R 4 other ends are connected with direct current input interface 1 negative pole link, described diode D1 negative pole is connected with controlled anodal output switch circuit 4 control signal inputs as current detecting and control circuit 8 control signal outputs, described diode D2 negative pole maintains signal output part as current detecting and control circuit 8 and maintains signal input part with controlled input switching circuit 6 and be connected.
Described direct current output interface 3 is USB interface, and the VBUS+ end of USB interface is as the anode connection terminal of direct current output interface 3, and the VBUS-end of USB interface is as the negative pole link of direct current output interface 3.
Compared with prior art, the invention has the beneficial effects as follows:
1, design ingenious, power-saving control function while having without external use electric loading, external direct current is inputted by direct current input interface, the work of low-power consumption start-up circuit, when not being connected on direct current output interface while using electric loading, controlled anodal output switch circuit, controlled negative pole output switch circuit, controlled input switching circuit is all off-state, the DC-DC transforming circuit being connected between direct current input interface and direct current output interface does not have electricity input and quits work, this power supply adaptor enters battery saving mode, low-power consumption start-up circuit is little from power consumption, effectively save the electric energy of external direct current power supply, prolongs standby time,
2, this power supply adaptor has the function automatically switching between standby electricity-saving mode and normal operation mode, in the time using electric loading to the access of direct current output interface, first, low-power consumption start-up circuit is by being connected with controlled input switching circuit control signal input by electric loading, trigger controlled input switching circuit switch conduction, DC-DC transforming circuit was switched on being connected of direct current input interface, DC-DC transforming circuit obtains electric work and carries out DC-DC transformation, the voltage signal of DC-DC transforming circuit cathode output end output triggers controlled negative pole output switch circuit switch conduction, simultaneously, when DC-DC transforming circuit is started working, its power input electric current increases, trigger current detects and the controlled anodal output switch circuit switch conduction of control circuit control, make DC-DC transforming circuit cathode output end connect direct current output interface anode connection terminal, another aspect, although controlled input switching circuit control signal output will with direct current input interface negative pole link short circuit, but current detecting and control circuit maintain signal output part and maintain signal input part with controlled input switching circuit and be connected, it has maintained the conducting of controlled input switching circuit, so, DC-DC transforming circuit be also communicated with by electric loading, this power supply adaptor enters normal operation mode, external direct current power supply passes through this power supply adaptor to electricity consumption load supplying,
3, this power supply adaptor DC-DC transforming circuit cathode output end is connected with low-power consumption start-up circuit enabling signal output, direct current output interface anode connection terminal by controlled anodal output switch circuit, so, when direct current output interface does not connect while using electric loading, controlled anodal output switch circuit switch disconnects, low-power consumption start-up circuit can, by its enabling signal output to DC-DC transforming circuit cathode output end feedback voltage, not make DC-DC transforming circuit not power consumption completely at this moment.
[brief description of the drawings]
Fig. 1 is the embodiment of the present invention 1 structure chart.
Fig. 2 is the embodiment of the present invention 1 circuit diagram.
Fig. 3 is the embodiment of the present invention 2 structure charts.
[embodiment]
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technical staff's of the same trade understanding:
Embodiment 1:
As shown in Figure 1-2,
A kind of novel DC-DC power supply adaptor, include the direct current input interface 1 connecting in turn for external direct current power supply, DC-DC transforming circuit 2, and for exporting galvanic direct current output interface 3 after transformation, the controlled anodal output switch circuit 4 disconnecting while being connected with for conducting when the DC-DC transforming circuit 2DC-DC transformation and non-DC-DC transformation between described DC-DC transforming circuit 2 cathode output ends and direct current output interface 3 anode connection terminal, the controlled negative pole output switch circuit 5 disconnecting while being connected with for conducting when the DC-DC transforming circuit 2DC-DC transformation and non-DC-DC transformation between DC-DC transforming circuit 2 cathode output ends and direct current output interface 3 negative pole links, described controlled negative pole output switch circuit 5 control signal inputs are connected with DC-DC transforming circuit 2 cathode output ends, the controlled input switching circuit 6 disconnecting when being connected with when being connected to by electric loading at direct current output interface 3 conducting between described direct current input interface 1 and DC-DC transforming circuit 2 and not being connected to by electric loading, described controlled input switching circuit 6 control signal inputs are connected with direct current output interface 3 negative pole links, on described direct current input interface 1, be also connected with the low-power consumption start-up circuit 7 that drives controlled input switching circuit 6 conductings when being connected to by electric loading at direct current output interface 3, described low-power consumption start-up circuit 7 enabling signal outputs are connected with direct current output interface 3 anode connection terminal, between described direct current input interface 1 and DC-DC transforming circuit 2, be also connected with and detect DC-DC transforming circuit 2 input size of current and maintain controlled input switching circuit 6 conductings and controlled anodal output switch circuit 4 conductings of control when being connected to electric loading at direct current output interface 3, and be not connected to the current detecting and the control circuit 8 that disconnect with the controlled anodal output switch circuit 4 of electric loading time control system at direct current output interface 3, described current detecting and control circuit 8 control signal outputs are connected with controlled anodal output switch circuit 4 control signal inputs, current detecting and control circuit 8 maintain signal output part and maintain signal input part with controlled input switching circuit 6 and be connected.
It is the DC-DC voltage conversion circuit of LM25010 that described DC-DC transforming circuit 2 adopts chip model.
Described controlled anodal output switch circuit 4 includes PMOS pipe Q6, NMOS manages Q2, resistance R 20～R22, and capacitor C 15, the drain electrode of described PMOS pipe Q6 is connected with DC-DC transforming circuit 2 cathode output ends as controlled anodal output switch circuit 4 switch one links, after being connected with resistance R 20 one end, the source electrode of PMOS pipe Q6 is connected with direct current output interface 3 anode connection terminal as controlled anodal another link of output switch circuit 4 switches, after being connected with resistance R 20 other ends, the grid of PMOS pipe Q6 is connected with the drain electrode of NMOS pipe Q2 by resistance R 21, source electrode and resistance R 22 one end of NMOS pipe Q2, after being connected, capacitor C 15 one end are connected with direct current input interface 1 negative pole link, grid and resistance R 22 other ends of NMOS pipe Q2, after being connected, capacitor C 15 other ends are connected with current detecting and control circuit 8 control signal outputs as controlled anodal output switch circuit 4 control signal inputs.
Described controlled negative pole output switch circuit 5 includes NMOS pipe Q4, resistance R 9～R10, and capacitor C 11, source electrode and resistance R 9 one end of described NMOS pipe Q4, after being connected, capacitor C 11 one end are connected with DC-DC transforming circuit 2 cathode output ends as controlled negative pole output switch circuit 5 switch one links, the drain electrode of NMOS pipe Q4 is connected with direct current output interface 3 negative pole links as controlled another link of negative pole output switch circuit 5 switches, grid and resistance R 9 other ends of NMOS pipe Q4, capacitor C 11 other ends, resistance R 10 one end are connected, resistance R 10 other ends are connected with DC-DC transforming circuit 2 cathode output ends as controlled negative pole output switch circuit 5 control signal inputs.
Described current detecting and control circuit 8 are connected between direct current input interface 1 and controlled input switching circuit 6.
Described controlled input switching circuit 6 includes PMOS pipe Q5, NMOS manages Q3, resistance R 5～R8, voltage-stabiliser tube ZD2, diode D3, and capacitor C 10, described PMOS pipe Q5 source electrode and voltage-stabiliser tube ZD2 negative pole, after being connected, resistance R 6 one end are connected with current detecting and control circuit 8 current output terminals as controlled input switching circuit 6 switch one links, PMOS pipe Q5 drain electrode is connected with DC-DC transforming circuit 2 electrode input ends as controlled another link of input switching circuit 6 switches, DC-DC transforming circuit 2 negative inputs connect direct current input interface 1 negative pole link, PMOS pipe Q5 grid and resistance R 6 one end, voltage-stabiliser tube ZD2 positive pole, resistance R 5 one end are connected, resistance R 6 other ends are connected with direct current input interface 1 anode connection terminal, resistance R 5 other ends are connected with NMOS pipe Q3 drain electrode, NMOS pipe Q3 source electrode and resistance R 7 one end, capacitor C 10 one end, after being connected, resistance R 8 one end are connected with direct current input interface 1 negative pole link, NMOS pipe Q3 grid and resistance R 7 other ends, capacitor C 10 other ends, after diode D3 negative pole is connected, maintaining signal input part as controlled input switching circuit 6 maintains signal output part with current detecting and control circuit 8 and is connected, diode D3 positive pole is connected with direct current output interface 3 negative pole links as controlled input switching circuit 6 control signal inputs.
Described low-power consumption start-up circuit 7 includes resistance R 2, resistance R 12, capacitor C 5, voltage-stabiliser tube ZD1, and diode D6, described resistance R 2 one end are connected with direct current input interface 1 anode connection terminal, resistance R 2 other ends and voltage-stabiliser tube ZD1 negative pole, diode D6 positive pole is connected, after being connected with capacitor C 5 one end, voltage-stabiliser tube ZD1 positive pole is connected with direct current input interface 1 negative pole link, capacitor C 5 other ends are connected with resistance R 12 one end, after being connected with diode D6 negative pole, resistance R 12 other ends are connected with direct current output interface 3 anode connection terminal as low-power consumption start-up circuit 7 enabling signal outputs.
Described current detecting and control circuit 8 include diode D5, resistance R 1, resistance R 3～R4, PNP triode Q1, and diode D1～D2, described diode D5 positive pole and resistance R 1 one end, after being connected, PNP triode Q1 emitter is connected with direct current input interface 1 anode connection terminal as current detecting and control circuit 8 current input terminals, diode D5 negative pole and resistance R 1 other end, after being connected, PNP triode Q1 base stage is connected with controlled input switching circuit 6 switch one links as current detecting and control circuit 8 current output terminals, described PNP triode Q1 collector electrode is connected with resistance R 3 one end, resistance R 3 other ends and R4 one end, diode D1 positive pole, diode D2 positive pole is connected, resistance R 4 other ends are connected with direct current input interface 1 negative pole link, described diode D1 negative pole is connected with controlled anodal output switch circuit 4 control signal inputs as current detecting and control circuit 8 control signal outputs, described diode D2 negative pole maintains signal output part as current detecting and control circuit 8 and maintains signal input part with controlled input switching circuit 6 and be connected.
Described direct current output interface 3 is USB interface, and the VBUS+ end of USB interface is as the anode connection terminal of direct current output interface 3, and the VBUS-end of USB interface is as the negative pole link of direct current output interface 3.
Operation principle and the process of this power supply adaptor are as follows:
External direct current is inputted by direct current input interface 1, and low-power consumption start-up circuit 7 is worked.
Situation 1: in the time that direct current output interface 3 does not have access not use electric loading, low-power consumption start-up circuit 7 could not be by being connected with controlled input switching circuit 6 control signal inputs by electric loading, controlled input switching circuit 6, controlled anodal output switch circuit 4, controlled negative pole output switch circuit 5 are all in switch off state, and this adapter is in standby electricity-saving mode.
Situation 2: in the time using electric loading to 3 accesses of direct current output interface, first, low-power consumption start-up circuit 7 is by being connected with controlled input switching circuit 6 control signal inputs by electric loading, draw high the level of controlled input switching circuit 6 control signal inputs, trigger NMOS pipe Q3 conducting on controlled input switching circuit 6, and on controlled input switching circuit 6, C10 electric capacity time delay energy certain hour maintains NMOS pipe Q3 conducting, on PMOS pipe Q5 grid, voltage is drop-down by resistance R 5 and NMOS pipe Q3, cause PMOS pipe Q5 conducting, DC-DC transforming circuit 2 power inputs obtain electric work and carry out DC-DC transformation, the voltage signal of DC-DC transforming circuit 2 cathode output end outputs triggers NMOS pipe Q4 conducting on controlled negative pole output switch circuit 5, direct current output interface 3 negative pole links are connected DC-DC transforming circuit 2 cathode output ends,
Simultaneously, when DC-DC transforming circuit 2 is started working, its power input electric current increases, resistance R1 both end voltage on current detecting and control circuit 8 is increased, be that between triode Q1 base stage and emitter, forward bias voltage increases, make triode Q1 conducting, between resistance R 3 and resistance R 4, produce pressure drop, trigger on the one hand controlled anodal output switch circuit 4NMOS pipe Q2, PMOS pipe Q6 conducting, make DC-DC transforming circuit 2 cathode output ends connect direct current output interface 3 anode connection terminal, another aspect, current detecting and control circuit 8 maintain signal output part and maintain signal input part with controlled input switching circuit 6 and be connected, maintain the conducting of controlled input switching circuit 6, so, DC-DC transforming circuit 2 be also communicated with by electric loading, this power supply adaptor enters normal operation mode, external direct current power supply passes through this power supply adaptor to electricity consumption load supplying.
Situation 3: when pulling out from direct current output interface 3 while using electric loading, circuitry consumes electric current reduces, DC-DC transforming circuit 2 power input electric currents reduce, on current detecting and control circuit 8, resistance R1 both end voltage reduces, be that between triode Q1 base stage and emitter, forward bias voltage reduces, cause triode Q1 cut-off, absence of voltage in resistance R 3, resistance R 4, make NMOS pipe Q2, PMOS pipe Q6 cut-off on controlled anodal output switch circuit 4, DC-DC transforming circuit 2 cathode output ends were disconnected with being connected of direct current output interface 3 anode connection terminal;
Simultaneously, low-power consumption start-up circuit 7 could not be by being connected with controlled input switching circuit 6 control signal inputs by electric loading, current detecting and control circuit 8 do not maintain voltage to NMOS pipe Q3 grid input on controlled input switching circuit 6 yet, cause NMOS pipe Q3 cut-off, cause PMOS pipe Q5 also to end, DC-DC transforming circuit 2 was disconnected with being connected of direct current input interface 1, DC-DC transforming circuit 2 does not have electricity input and stops DC-DC transformation, DC-DC transforming circuit 2 cathode output end no-output voltages, make NMOS pipe Q4 cut-off on controlled negative pole output switch circuit 5, DC-DC transforming circuit 2 cathode output ends were disconnected with 3 being connected of negative pole link of direct current output interface, so, this power supply adaptor enters again standby electricity-saving mode.
As shown in Figure 2, flow through in the low-power consumption start-up circuit 7 consumable electric current of R2
in the time that the Vin of input DC power is between 6-42V, consumable electric current I effectively drops to a microampere rank, effectively saves the electric energy of external direct current power supply, prolongs standby time.
As mentioned above, in the time not using for a long time this power supply adaptor to electricity consumption load supplying, can by direct current input interface 1 and external direct current as battery components from.
Embodiment 2:
As shown in Figure 3, distinguish and be compared with embodiment 1, in the present embodiment 2, current detecting and control circuit 8 are connected between controlled input switching circuit 6 and DC-DC transforming circuit 2, and it also can control in the time of the non-DC-DC transformation of DC-DC transforming circuit 2, and controlled anodal output switch circuit 4 disconnects and in the time of 5 conducting of controlled negative pole output switch circuit, maintain controlled input switching circuit 6 conductings.
As mentioned above, what this case was protected is a kind of novel DC-DC power supply adaptor, and all technical schemes identical or close with this case structure all should be shown in the protection range that falls into this case.
Claims (9)
1. a novel DC-DC power supply adaptor, it is characterized in that including the direct current input interface (1) connecting in turn for external direct current power supply, DC-DC transforming circuit (2), and for exporting galvanic direct current output interface (3) after transformation, the controlled anodal output switch circuit (4) disconnecting while being connected with for conducting when DC-DC transforming circuit (2) the DC-DC transformation and non-DC-DC transformation between described DC-DC transforming circuit (2) cathode output end and direct current output interface (3) anode connection terminal, the controlled negative pole output switch circuit (5) disconnecting while being connected with for conducting when DC-DC transforming circuit (2) the DC-DC transformation and non-DC-DC transformation between DC-DC transforming circuit (2) cathode output end and direct current output interface (3) negative pole link, described controlled negative pole output switch circuit (5) control signal input is connected with DC-DC transforming circuit (2) cathode output end, the controlled input switching circuit (6) disconnecting when being connected with for conducting in the time that direct current output interface (3) is connected to by electric loading between described direct current input interface (1) and DC-DC transforming circuit (2) and not being connected to by electric loading, described controlled input switching circuit (6) control signal input is connected with direct current output interface (3) negative pole link, on described direct current input interface (1), be also connected with the low-power consumption start-up circuit (7) for drive controlled input switching circuit (6) conducting in the time that direct current output interface (3) is connected to by electric loading, described low-power consumption start-up circuit (7) enabling signal output is connected with direct current output interface (3) anode connection terminal, between described direct current input interface (1) and DC-DC transforming circuit (2), be also connected with and detect DC-DC transforming circuit (2) input size of current for maintaining controlled input switching circuit (6) conducting and control controlled anodal output switch circuit (4) conducting in the time that direct current output interface (3) being connected to by electric loading, and be not connected to current detecting and the control circuit (8) with the electric loading controlled anodal output switch circuit of time control system (4) disconnection at direct current output interface (3), described current detecting and control circuit (8) control signal output is connected with controlled anodal output switch circuit (4) control signal input, current detecting and control circuit (8) maintain signal output part and maintain signal input part with controlled input switching circuit (6) and be connected.
2. the novel DC-DC power supply adaptor of one according to claim 1, is characterized in that described DC-DC transforming circuit (2) adopts the DC-DC voltage conversion circuit that chip model is LM25010.
3. the novel DC-DC power supply adaptor of one according to claim 1, it is characterized in that described controlled anodal output switch circuit (4) includes PMOS pipe Q6, NMOS manages Q2, resistance R 20～R22, and capacitor C 15, the drain electrode of described PMOS pipe Q6 is connected with DC-DC transforming circuit (2) cathode output end as controlled anodal output switch circuit (4) switch one link, after being connected with resistance R 20 one end, the source electrode of PMOS pipe Q6 is connected with direct current output interface (3) anode connection terminal as another link of controlled anodal output switch circuit (4) switch, after being connected with resistance R 20 other ends, the grid of PMOS pipe Q6 is connected with the drain electrode of NMOS pipe Q2 by resistance R 21, source electrode and resistance R 22 one end of NMOS pipe Q2, after being connected, capacitor C 15 one end are connected with direct current input interface (1) negative pole link, grid and resistance R 22 other ends of NMOS pipe Q2, after being connected, capacitor C 15 other ends are connected with current detecting and control circuit (8) control signal output as controlled anodal output switch circuit (4) control signal input.
4. the novel DC-DC power supply adaptor of one according to claim 1, it is characterized in that described controlled negative pole output switch circuit (5) includes NMOS pipe Q4, resistance R 9～R10, and capacitor C 11, source electrode and resistance R 9 one end of described NMOS pipe Q4, after being connected, capacitor C 11 one end are connected with DC-DC transforming circuit (2) cathode output end as controlled negative pole output switch circuit (5) switch one link, the drain electrode of NMOS pipe Q4 is connected with direct current output interface (3) negative pole link as another link of controlled negative pole output switch circuit (5) switch, grid and resistance R 9 other ends of NMOS pipe Q4, capacitor C 11 other ends, resistance R 10 one end are connected, resistance R 10 other ends are connected with DC-DC transforming circuit (2) cathode output end as controlled negative pole output switch circuit (5) control signal input.
5. the novel DC-DC power supply adaptor of one according to claim 1, is characterized in that described current detecting and control circuit (8) are connected between direct current input interface (1) and controlled input switching circuit (6).
6. the novel DC-DC power supply adaptor of one according to claim 5, it is characterized in that described controlled input switching circuit (6) includes PMOS pipe Q5, NMOS manages Q3, resistance R 5～R8, voltage-stabiliser tube ZD2, diode D3, and capacitor C 10, described PMOS pipe Q5 source electrode and voltage-stabiliser tube ZD2 negative pole, after being connected, resistance R 6 one end are connected with current detecting and control circuit (8) current output terminal as controlled input switching circuit (6) switch one link, PMOS pipe Q5 drain electrode is connected with DC-DC transforming circuit (2) electrode input end as another link of controlled input switching circuit (6) switch, DC-DC transforming circuit (2) negative input connects direct current input interface (1) negative pole link, PMOS pipe Q5 grid and resistance R 6 one end, voltage-stabiliser tube ZD2 positive pole, resistance R 5 one end are connected, resistance R 6 other ends are connected with direct current input interface (1) anode connection terminal, resistance R 5 other ends are connected with NMOS pipe Q3 drain electrode, NMOS pipe Q3 source electrode and resistance R 7 one end, capacitor C 10 one end, after being connected, resistance R 8 one end are connected with direct current input interface (1) negative pole link, NMOS pipe Q3 grid and resistance R 7 other ends, capacitor C 10 other ends, after diode D3 negative pole is connected, maintaining signal input part as controlled input switching circuit (6) maintains signal output part with current detecting and control circuit (8) and is connected, diode D3 positive pole is connected with direct current output interface (3) negative pole link as controlled input switching circuit (6) control signal input.
7. the novel DC-DC power supply adaptor of one according to claim 1, it is characterized in that described low-power consumption start-up circuit (7) includes resistance R 2, resistance R 12, capacitor C 5, voltage-stabiliser tube ZD1, and diode D6, described resistance R 2 one end are connected with direct current input interface (1) anode connection terminal, resistance R 2 other ends and voltage-stabiliser tube ZD1 negative pole, diode D6 positive pole is connected, after being connected with capacitor C 5 one end, voltage-stabiliser tube ZD1 positive pole is connected with direct current input interface (1) negative pole link, capacitor C 5 other ends are connected with resistance R 12 one end, after being connected with diode D6 negative pole, resistance R 12 other ends are connected with direct current output interface (3) anode connection terminal as low-power consumption start-up circuit (7) enabling signal output.
8. the novel DC-DC power supply adaptor of one according to claim 5, it is characterized in that described current detecting and control circuit (8) include diode D5, resistance R 1, resistance R 3～R4, PNP triode Q1, and diode D1～D2, described diode D5 positive pole and resistance R 1 one end, after being connected, PNP triode Q1 emitter is connected with direct current input interface (1) anode connection terminal as current detecting and control circuit (8) current input terminal, diode D5 negative pole and resistance R 1 other end, after being connected, PNP triode Q1 base stage is connected with controlled input switching circuit (6) switch one link as current detecting and control circuit (8) current output terminal, described PNP triode Q1 collector electrode is connected with resistance R 3 one end, resistance R 3 other ends and R4 one end, diode D1 positive pole, diode D2 positive pole is connected, resistance R 4 other ends are connected with direct current input interface (1) negative pole link, described diode D1 negative pole is connected with controlled anodal output switch circuit (4) control signal input as current detecting and control circuit (8) control signal output, described diode D2 negative pole maintains signal output part as current detecting and control circuit (8) and maintains signal input part with controlled input switching circuit (6) and be connected.
9. according to the novel DC-DC power supply adaptor of one described in claim 1-8 any one, it is characterized in that described direct current output interface (3) is for USB interface, the VBUS+ end of USB interface is as the anode connection terminal of direct current output interface (3), and the VBUS-end of USB interface is as the negative pole link of direct current output interface (3).
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| CN201410217685.5A CN103973101B (en) | 2014-05-22 | 2014-05-22 | A kind of DC-DC power source adapter |
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| CN201410217685.5A CN103973101B (en) | 2014-05-22 | 2014-05-22 | A kind of DC-DC power source adapter |
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| CN103973101A true CN103973101A (en) | 2014-08-06 |
| CN103973101B CN103973101B (en) | 2016-04-20 |
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| CN104393747A (en) * | 2014-11-25 | 2015-03-04 | 广东金莱特电器股份有限公司 | Novel BOOST type DC-DC converter circuit capable of automatically turning to low power consumption and low-voltage protection states |
| CN105529944A (en) * | 2014-10-20 | 2016-04-27 | 和硕联合科技股份有限公司 | Power adapter and electronic system using same |
| WO2017166265A1 (en) * | 2016-04-01 | 2017-10-05 | Intel Corporation | Reducing idle-time energy consumption in universal serial bus power delivery circuitry of power adapters |
| CN111864833A (en) * | 2020-07-06 | 2020-10-30 | 深圳拓邦股份有限公司 | Low-power-consumption starting circuit awakened through USB interface and power supply device |
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| Publication number | Publication date |
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| CN103973101B (en) | 2016-04-20 |
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Effective date of registration: 20240312 Address after: 528400, one of the workshop No.10, Yuyi Road, South China Modern Chinese medicine city, Nanlang Town, Zhongshan City, Guangdong Province Patentee after: ZHONGSHAN SHIBAO NEW ENERGY Co.,Ltd. Country or region after: China Address before: 528400 Building A, Linggang New Industrial Building, Torch Development Zone, Zhongshan City, Guangdong Province Patentee before: ZHONGSHAN POWER WING S & T CO.,LTD. Country or region before: China |