CN202167986U - Power supply device with multi-output - Google Patents
Power supply device with multi-output Download PDFInfo
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- CN202167986U CN202167986U CN2011202963782U CN201120296378U CN202167986U CN 202167986 U CN202167986 U CN 202167986U CN 2011202963782 U CN2011202963782 U CN 2011202963782U CN 201120296378 U CN201120296378 U CN 201120296378U CN 202167986 U CN202167986 U CN 202167986U
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- electrically connected
- circuit
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- transistor
- power supply
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Abstract
The utility model provides a power supply device with multi-output to solve a technical problem. The power supply device with multi-output comprises a switch type power supply circuit and a plurality of power supply output circuits. Each power supply output circuit comprises a first transistor, a protection circuit, a filtering capacitor, a branch circuit, a second transistor and a feedback circuit. The first terminal of the first transistor is electrically connected with the output terminal of the switch type power supply circuit. The protection circuit is electrically connected with the gate of the first transistor and the output terminal of the switch type power supply circuit for adjusting the gate voltage of the first transistor. The filtering capacitor is electrically connected with the second terminal of the first transistor and the output terminal of the power supply output circuit. The branch circuit is electrically connected with the output terminal of the power supply output circuit and a grounding terminal. The first terminal of the second transistor is electrically connected with the protection circuit, and the second terminal of the second transistor is electrically connected with the grounding terminal. The feedback circuit is electrically connected with the gate of the second transistor and the branch circuit. The power supply device with multi-output aims to provide power.
Description
[technical field]
The utility model about a kind of power supply unit, particularly about a kind of tool power supply units of exporting more.
[background technology]
Please refer to Fig. 1, Fig. 1 is the sketch map of the power supply unit 100 of the many outputs of convention tool.Power supply unit 100 comprises switch type power supplying circuit 110; It has a plurality of output end vo ut; Feedback circuit 120 is in order to the output voltage of sensing output, and the signal control switch formula power supply circuit 110 of controller 130 in order to pass back according to feedback circuit 120.Therefore the single controller 130 of 100 tools of the power supply unit of Fig. 1 can't accurately be controlled the output voltage of each output end vo ut.
Please refer to Fig. 2, Fig. 2 is the sketch map of the power supply unit 200 of the many outputs of another tool of convention.In order to solve the problem of Fig. 1 power supply unit 100; Power supply unit 200 comprises a main switch formula power supply circuit 210; A plurality of sub-switch type power supplying circuit 220, and a plurality of controllers 230 are in order to control the output voltage of a plurality of sub-switch type power supplying circuit 220.So each controller 230 all can be controlled the output voltage of each sub-switch type power supplying circuit 220 respectively according to the loading demand of each sub-switch type power supplying circuit 220.Yet the design of Fig. 2 power supply unit 200 not only needs considerable controller 230, has also increased the complexity of power supply unit 200 on circuit design.
[utility model content]
The purpose of the utility model is to provide the power supply unit of the many outputs of a kind of tool, and it comprises: the switch type power supplying circuit is used to provide voltage source; And a plurality of power output circuits, be electrically connected on this switch type power supplying circuit.Each power output circuit comprises: the first transistor, and its first end is electrically connected on the output of this switch type power supplying circuit; Protective circuit is electrically connected on the gate of this first transistor and the output of this switch type power supplying circuit, is used to adjust the gate voltage of this first transistor; Filter capacitor is electrically connected on second end of this first transistor and the output of this power output circuit; Bleeder circuit is electrically connected on the output and the earth terminal of this power output circuit, is used for producing a component voltage according to the output end voltage of this power output circuit; Transistor seconds, its first end is electrically connected on this protective circuit, and second end is electrically connected on this earth terminal; Reach feedback circuit, be electrically connected on gate and this bleeder circuit of this transistor seconds, be used for when this component voltage is lower than a predetermined voltage, opening this transistor seconds.
As optional technical scheme, this protective circuit comprises: first resistance, and its first end is electrically connected on the output of this switch type power supplying circuit, and second end is electrically connected on the gate of this first transistor; And second resistance, its first end is electrically connected on the gate of this first transistor, and second end is electrically connected on first end of this transistor seconds.
As optional technical scheme, this bleeder circuit comprises: the 3rd resistance, and its first end is electrically connected on the output of this power output circuit; And the 4th resistance, its first end is electrically connected on second end of the 3rd resistance, and second end is electrically connected on this earth terminal.
As optional technical scheme, this feedback circuit comprises: positive voltage source is used to provide positive voltage; The 5th resistance, its first end is electrically connected on this positive voltage source; The 6th resistance, its first end is electrically connected on second end of the 5th resistance, and second end is electrically connected on the gate of this transistor seconds; And the shunting voltage stabilizing element, its cathode terminal is electrically connected on second end of the 5th resistance, and anode tap is electrically connected on this earth terminal, and reference edge is electrically connected on this bleeder circuit.
As optional technical scheme, this power output circuit comprises the output that a diode is arranged at this switch type power supplying circuit in addition.
As further optional technical scheme, the anode tap of this diode is electrically connected on the output of this switch type power supplying circuit, and cathode terminal is electrically connected on first end of this first transistor.
As optional technical scheme, this first transistor is a MOS transistor.
As optional technical scheme, this transistor seconds is the bipolarity junction transistor.
Compared to prior art; The utility model does not need a plurality of controllers and a plurality of sub-switch type power supplying circuit can accurately control the output voltage of each output, so the complexity of the utility model power supply unit supply capable of reducing power source on circuit design.
[description of drawings]
Fig. 1 is the sketch map of the power supply unit of the many outputs of convention tool.
Fig. 2 is the sketch map of the power supply unit of the many outputs of another tool of convention.
Fig. 3 is the sketch map of the power supply unit of the many outputs of the utility model tool.
Fig. 4 is the sketch map of the power output circuit of Fig. 3 power supply unit.
[embodiment]
Please be simultaneously with reference to figure 3 and Fig. 4.Fig. 3 is the sketch map of the power supply unit 300 of the many outputs of the utility model tool, and Fig. 4 is the sketch map of the power output circuit 320 of Fig. 3 power supply unit 300.As shown in the figure, power supply unit 300 comprises switch type power supplying circuit 310 and is used to provide voltage source, and a plurality of power output circuits 320 are electrically connected on switch type power supplying circuit 310.Each power output circuit 320 comprises the first transistor T1, protective circuit 322, filter capacitor C, bleeder circuit 324, transistor seconds T2, and feedback circuit 326.
First end of the first transistor T1 is electrically connected on the output of switch type power supplying circuit 310.Protective circuit 322 comprises first resistance R 1 and second resistance R 2.First end of first resistance R 1 is electrically connected on the output of switch type power supplying circuit 310, and second end of first resistance R 1 is electrically connected on the gate of the first transistor T1.First end of second resistance R 2 is electrically connected on the gate of the first transistor T1, and second end of second resistance R 2 is electrically connected on first end of transistor seconds T2.Protective circuit 322 can be adjusted the gate voltage of the first transistor T1 when the first transistor T1 is unlocked, damage because of voltage is excessive with the gate of avoiding the first transistor T1.Filter capacitor C is electrically connected on second end of the first transistor T1 and the output end vo ut of power output circuit 320, is used for the output voltage of stabilized power supply output circuit 320.Bleeder circuit 324 comprises the 3rd resistance R 3 and the 4th resistance R 4.First end of the 3rd resistance R 3 is electrically connected on the output end vo ut of power output circuit 320.First end of the 4th resistance R 4 is electrically connected on second end of the 3rd resistance R 3, and second end of the 4th resistance R 4 is electrically connected on earth terminal.Bleeder circuit 324 is used for producing a component voltage according to the output end voltage of power output circuit 320 in second end of the 3rd resistance R 3.First end of transistor seconds T2 is electrically connected on protective circuit 322, and second end of transistor seconds T2 is electrically connected on earth terminal.Feedback circuit 326 is electrically connected on gate and the bleeder circuit 324 of transistor seconds T2.
By above-mentioned configuration; When the component voltage of second end of the 3rd resistance R 3 is lower than the voltage of positive voltage source Vcc; The voltage of the cathode terminal of shunting voltage stabilizing element VR is positioned at high potential; And then open transistor seconds T2, and and, also opens transistor seconds T2 the first transistor T1 when being unlocked simultaneously, make the output end voltage rising (that is component voltage of second end of the 3rd resistance R 3 that raises) of power output circuit 320.When the component voltage of second end of the 3rd resistance R 3 is higher than the voltage of positive voltage source Vcc; The voltage of the cathode terminal of shunting voltage stabilizing element VR is positioned at electronegative potential; And then close transistor seconds T2; And when transistor seconds T2 is closed, also close the first transistor T1 simultaneously, make that the output end voltage of power output circuit 320 reduces the component voltage of second end of the 3rd resistance R 3 (that is reduce).The output end voltage that so is may command power output circuit 320 is in required magnitude of voltage.
In addition, power output circuit 320 comprises diode D in addition, is arranged at the output of switch type power supplying circuit 310.The anode tap of diode D is electrically connected on the output of switch type power supplying circuit 310, and the cathode terminal of diode D is electrically connected on first end of the first transistor T1.The first transistor T1 can be a MOS transistor for example, and transistor seconds T2 for example can be the bipolarity junction transistor.
Compared to prior art; The power supply unit of the many outputs of the utility model tool does not need a plurality of controllers and a plurality of sub-switch type power supplying circuit can accurately control the output voltage of each output, so the complexity of the utility model power supply unit supply capable of reducing power source on circuit design.
The above is merely the embodiment of the utility model, and the utility model protection range is as the criterion with claim.
Claims (8)
1. the power supply units of the many outputs of a tool is characterized in that comprising:
The switch type power supplying circuit is used to provide voltage source; And
A plurality of power output circuits are electrically connected on this switch type power supplying circuit, and each power output circuit comprises:
The first transistor, its first end is electrically connected on the output of this switch type power supplying circuit;
Protective circuit is electrically connected on the gate of this first transistor and the output of this switch type power supplying circuit, is used to adjust the gate voltage of this first transistor;
Filter capacitor is electrically connected on second end of this first transistor and the output of this power output circuit;
Bleeder circuit is electrically connected on the output and the earth terminal of this power output circuit, is used for producing component voltage according to the output end voltage of this power output circuit;
Transistor seconds, its first end is electrically connected on this protective circuit, and second end is electrically connected on this earth terminal; And
Feedback circuit is electrically connected on gate and this bleeder circuit of this transistor seconds, is used for when this component voltage is lower than a predetermined voltage, opening this transistor seconds.
2. power supply unit as claimed in claim 1 is characterized in that this protective circuit comprises:
First resistance, its first end is electrically connected on the output of this switch type power supplying circuit, and second end is electrically connected on the gate of this first transistor; And
Second resistance, its first end is electrically connected on the gate of this first transistor, and second end is electrically connected on first end of this transistor seconds.
3. power supply unit as claimed in claim 1 is characterized in that this bleeder circuit comprises:
The 3rd resistance, its first end is electrically connected on the output of this power output circuit; And
The 4th resistance, its first end is electrically connected on second end of the 3rd resistance, and second end is electrically connected on this earth terminal.
4. power supply unit as claimed in claim 1 is characterized in that this feedback circuit comprises:
Positive voltage source is used to provide positive voltage;
The 5th resistance, its first end is electrically connected on this positive voltage source;
The 6th resistance, its first end is electrically connected on second end of the 5th resistance, and second end is electrically connected on the gate of this transistor seconds; And
The shunting voltage stabilizing element, its cathode terminal is electrically connected on second end of the 5th resistance, and anode tap is electrically connected on this earth terminal, and reference edge is electrically connected on this bleeder circuit.
5. power supply unit as claimed in claim 1 is characterized in that this power output circuit comprises the output that a diode is arranged at this switch type power supplying circuit in addition.
6. power supply unit as claimed in claim 5 is characterized in that the anode tap of this diode is electrically connected on the output of this switch type power supplying circuit, and cathode terminal is electrically connected on first end of this first transistor.
7. power supply unit as claimed in claim 1 is characterized in that this first transistor is a MOS transistor.
8. power supply unit as claimed in claim 1 is characterized in that this transistor seconds is the bipolarity junction transistor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100209204U TWM414032U (en) | 2011-05-23 | 2011-05-23 | Power supply with multiple outputs |
| CN2011202963782U CN202167986U (en) | 2011-05-23 | 2011-08-08 | Power supply device with multi-output |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100209204U TWM414032U (en) | 2011-05-23 | 2011-05-23 | Power supply with multiple outputs |
| CN2011202963782U CN202167986U (en) | 2011-05-23 | 2011-08-08 | Power supply device with multi-output |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202167986U true CN202167986U (en) | 2012-03-14 |
Family
ID=55070616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202963782U Expired - Fee Related CN202167986U (en) | 2011-05-23 | 2011-08-08 | Power supply device with multi-output |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202167986U (en) |
| TW (1) | TWM414032U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326869A (en) * | 2013-06-05 | 2013-09-25 | 四川艾普视达数码科技有限公司 | Device for network video tape recorder burn-in |
| CN109861530A (en) * | 2019-02-12 | 2019-06-07 | 深圳可立克科技股份有限公司 | A kind of fast energy transfer circuit and power supply |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI482007B (en) * | 2012-09-27 | 2015-04-21 | Wistron Corp | Computer system, power supply device and method thereof |
| TWI469476B (en) * | 2012-11-07 | 2015-01-11 | Richtek Technology Corp | Multi-output switching regulator and multi-output power supply method |
-
2011
- 2011-05-23 TW TW100209204U patent/TWM414032U/en not_active IP Right Cessation
- 2011-08-08 CN CN2011202963782U patent/CN202167986U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326869A (en) * | 2013-06-05 | 2013-09-25 | 四川艾普视达数码科技有限公司 | Device for network video tape recorder burn-in |
| CN109861530A (en) * | 2019-02-12 | 2019-06-07 | 深圳可立克科技股份有限公司 | A kind of fast energy transfer circuit and power supply |
| WO2020164169A1 (en) * | 2019-02-12 | 2020-08-20 | 深圳可立克科技股份有限公司 | Rapid energy transfer circuit, and power supply |
| CN109861530B (en) * | 2019-02-12 | 2024-06-14 | 深圳可立克科技股份有限公司 | Quick energy transfer circuit and power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM414032U (en) | 2011-10-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20170808 |