CN104020811A - Multi-channel voltage regulator circuit - Google Patents
Multi-channel voltage regulator circuit Download PDFInfo
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- CN104020811A CN104020811A CN201410256554.8A CN201410256554A CN104020811A CN 104020811 A CN104020811 A CN 104020811A CN 201410256554 A CN201410256554 A CN 201410256554A CN 104020811 A CN104020811 A CN 104020811A
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- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 230000001012 protector Effects 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000013021 overheating Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 abstract 1
- 238000011105 stabilization Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- Emergency Protection Circuit Devices (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
The invention discloses a multi-channel voltage regulator circuit. The multi-channel voltage regulator circuit has the advantage of being low in standby current. The multi-channel voltage regulator circuit comprises four paths of voltage stabilization output. The first path of output is 9 V, the second path of output is 5 V, the third path of output Vcc is 1.2 V, and the three paths of output can be switched off through a CTRL pin. The fourth path of output is 5 V. The multi-channel voltage regulator circuit can serve as a power supply of a microcontroller circuit, a CD driver circuit, an audio control circuit, a lighting circuit and the like of a multimedia system, and is convenient to control, safe and reliable.
Description
Technical field
The invention belongs to field of power supplies, be specially plurality of voltages regulator circuit.
Background technology
To the method for designing of multichannel, large electric current, low-power dissipation power supply be at present:
1, with multiple integrated voltage-stabilized chips.Shortcoming: cost high (Material Cost, production cost, later stage failure rate), power consumption large (because large electric current and low-power consumption are contradiction in design), do not have overvoltage, surge, overheat protector design.
2, Switching Power Supply.Shortcoming: cost high (Material Cost, production cost, later stage failure rate), electromagnetic radiation large (field that electromagnetism is had relatively high expectations can not be applied).
3, discrete component composition.Shortcoming: cost high (Material Cost, production cost, later stage failure rate), the precision of voltage regulation are low.
Therefore a kind of plurality of voltages regulator circuit is problem demanding prompt solution.
Summary of the invention
The object of the invention is to propose a kind of can multipath voltage regulation output and control convenient, safe and reliable plurality of voltages regulator circuit.
Plurality of voltages regulator circuit, comprise current input terminal VCC, earth terminal GNDHe tetra-road output end of pressure-stabilizing mouth the first Voltage-output ports, second voltage output port, tertiary voltage output port, the 4th Voltage-output port, VCC is connected with reference voltage generating circuit, between VCC and reference voltage generating circuit, be provided with Surge Protector, reference voltage generating circuit is connected with overvoltage protection and overheating protection, described reference voltage generating circuit is provided with four tunnel outputs, the operational amplification circuit of wherein leading up to is connected with the 4th Voltage-output port, other three tunnels by gauge tap CTRL respectively with the first Voltage-output port, second voltage output port and tertiary voltage output port, wherein the first Voltage-output port, the gauge tap of second voltage output port and tertiary voltage output port is separate, between the first Voltage-output port and second voltage output port and reference voltage generating circuit, be equipped with operational amplification circuit, between tertiary voltage output port and reference voltage generating circuit, be provided with voltage stabilizing triode, in the Voltage-output of Si road, the first Voltage-output port is output as 9V, second voltage output port output voltage is 5V, tertiary voltage output port output voltage V cc-1.2v, the output of Zhe San road can be turn-offed by gauge tap CTRL input low level, and the 4th Voltage-output port independence output voltage is 5V.
As the preferred mode of one, earth terminal GND is connected with current input terminal VCC, gauge tap CTRL and four voltage output ends.
Compared with prior art, the invention discloses a kind of plurality of voltages regulator circuit, this circuit has the advantages that standby current is little, and this circuit comprises four tunnel voltage stabilizing outputs.The first via is output as 9V, and the second tunnel is output as 5V, Third Road output Vcc-1.2v, and the output of Zhe San road can be turn-offed by CTRL pin.Si road is independently output as 5V, and the present invention can be used as the power supply of the circuit such as the microcontroller, CD driver, audio frequency control, illumination of multimedia system, and it is convenient, safe and reliable to control.
Brief description of the drawings
Fig. 1 is functional schematic block diagram of the present invention.
Fig. 2 is external terminal Pareto diagram of the present invention.
Fig. 3 is outline packages figure of the present invention.
Embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Plurality of voltages regulator circuit as shown in Figure 1 and Figure 2, comprise current input terminal VCC, earth terminal GNDHe tetra-road output end of pressure-stabilizing mouth the first Voltage-output port OUT1, second voltage output port OUT2, tertiary voltage output port OUT3, the 4th Voltage-output port OUT4, VCC is connected with reference voltage generating circuit, between VCC and reference voltage generating circuit, be provided with Surge Protector, reference voltage generating circuit is connected with overvoltage protection and overheating protection, in order to circuit is protected in the time that unusual condition appears in circuit, described reference voltage generating circuit is provided with four tunnel outputs, the operational amplification circuit of wherein leading up to is connected with the 4th Voltage-output port OUT4, other three tunnels by gauge tap CTRL respectively with the first Voltage-output port OUT1, second voltage output port OUT2 and tertiary voltage output port OUT3, wherein the first Voltage-output port OUT1, the gauge tap of second voltage output port OUT2 and tertiary voltage output port OUT3 is separate, between the first Voltage-output port OUT1 and second voltage output port OUT2 and reference voltage generating circuit, be equipped with operational amplification circuit, between tertiary voltage output port OUT3 and reference voltage generating circuit, be provided with voltage stabilizing triode, in the Voltage-output of Si road, the first Voltage-output port OUT1 is output as 9V, second voltage output port OUT2 output voltage is 5V, tertiary voltage output port OUT2 output voltage V cc-1.2v, the output of Zhe San road can be turn-offed by gauge tap CTRL input low level, and the 4th Voltage-output port OUT4 independence output voltage is 5V, as the preferred mode of one, earth terminal GND is connected with current input terminal VCC, gauge tap CTRL and four voltage output ends, plays short-circuit protection effect.Outer enclosure of the present invention adopts the packing forms of the TO220B-7L of standard, as shown in Figure 3.The present invention is a wide-voltage range multiple series series linear voltage adjuster control chip, is encapsulated as TO22B-7L.This chip comprises a road power supply input (5 pin), power supply (4 pin), switch control (3 pin), the three micro-power consumptions in controllable voltages output Ji Yi road, road are independently exported.The wherein controlled output 9V of the first via (7 pin), electric current is not less than 400MA; The controlled output 5V in the second tunnel (6 pin), circuit is not less than 800MA, the controlled output V-of Third Road (1 pin)
cc-1.2V, electric current is not less than 400MA, and Si road (2 pin) directly exports 5V, is not less than 200MA.Chip quiescent dissipation is not more than 700UA, and user can be used as the power supply that microcontroller, CD driver, audio frequency control, illumination of multimedia system etc. needs multiple power supplies feed circuit.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and in the situation that not deviating from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, is therefore intended to all changes that drop in the implication and the scope that are equal to important document of claim to include in the present invention.Any Reference numeral in claim should be considered as limiting related claim.
Claims (2)
1. plurality of voltages regulator circuit, it is characterized in that: comprise current input terminal VCC, earth terminal GNDHe tetra-road output end of pressure-stabilizing mouth the first Voltage-output ports, second voltage output port, tertiary voltage output port, the 4th Voltage-output port, VCC is connected with reference voltage generating circuit, between VCC and reference voltage generating circuit, be provided with Surge Protector, reference voltage generating circuit is connected with overvoltage protection and overheating protection, described reference voltage generating circuit is provided with four tunnel outputs, the operational amplification circuit of wherein leading up to is connected with the 4th Voltage-output port, other three tunnels by gauge tap CTRL respectively with the first Voltage-output port, second voltage output port and tertiary voltage output port, wherein the first Voltage-output port, the gauge tap of second voltage output port and tertiary voltage output port is separate, between the first Voltage-output port and second voltage output port and reference voltage generating circuit, be equipped with operational amplification circuit, between tertiary voltage output port and reference voltage generating circuit, be provided with voltage stabilizing triode, in the Voltage-output of Si road, the first Voltage-output port is output as 9V, second voltage output port output voltage is 5V, tertiary voltage output port output voltage V cc-1.2v, the output of Zhe San road can be turn-offed by gauge tap CTRL input low level, and the 4th Voltage-output port independence output voltage is 5V.
2. plurality of voltages regulator circuit according to claim 1, is characterized in that: earth terminal GND is connected with current input terminal VCC, gauge tap CTRL and four voltage output ends, plays short-circuit protection effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256554.8A CN104020811B (en) | 2014-06-11 | 2014-06-11 | Plurality of voltages regulator circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410256554.8A CN104020811B (en) | 2014-06-11 | 2014-06-11 | Plurality of voltages regulator circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104020811A true CN104020811A (en) | 2014-09-03 |
| CN104020811B CN104020811B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410256554.8A Expired - Fee Related CN104020811B (en) | 2014-06-11 | 2014-06-11 | Plurality of voltages regulator circuit |
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| Country | Link |
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| CN (1) | CN104020811B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504523A (en) * | 2019-08-30 | 2019-11-26 | 深圳市威益德科技有限公司 | Antenna installation method, mounting structure and the vehicle electronics product of vehicle electronics product |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI630469B (en) * | 2017-03-03 | 2018-07-21 | Faraday Technology Corporation | Voltage regulator |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031362A (en) * | 1999-05-13 | 2000-02-29 | Bradley; Larry D. | Method and apparatus for feedback control of switch mode power supply output to linear regulators |
| US20050052171A1 (en) * | 2003-09-08 | 2005-03-10 | Rohm Co., Ltd. | Multiple-output power device, and mobile device using the same |
| US20100090664A1 (en) * | 2008-10-13 | 2010-04-15 | Holtek Semiconductor Inc. | Voltage regulator having active foldback current limiting circuit |
| CN102478876A (en) * | 2010-11-25 | 2012-05-30 | 联咏科技股份有限公司 | Reference voltage generating circuit and method |
| CN102684178A (en) * | 2011-03-11 | 2012-09-19 | 同方泰德国际科技(北京)有限公司 | Multi-output circuit using power supply load short-circuit protection circuit |
| CN103019291A (en) * | 2012-12-21 | 2013-04-03 | 上海宏力半导体制造有限公司 | Low-voltage-difference linear voltage stabilizer circuit |
-
2014
- 2014-06-11 CN CN201410256554.8A patent/CN104020811B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6031362A (en) * | 1999-05-13 | 2000-02-29 | Bradley; Larry D. | Method and apparatus for feedback control of switch mode power supply output to linear regulators |
| US20050052171A1 (en) * | 2003-09-08 | 2005-03-10 | Rohm Co., Ltd. | Multiple-output power device, and mobile device using the same |
| US20100090664A1 (en) * | 2008-10-13 | 2010-04-15 | Holtek Semiconductor Inc. | Voltage regulator having active foldback current limiting circuit |
| CN102478876A (en) * | 2010-11-25 | 2012-05-30 | 联咏科技股份有限公司 | Reference voltage generating circuit and method |
| CN102684178A (en) * | 2011-03-11 | 2012-09-19 | 同方泰德国际科技(北京)有限公司 | Multi-output circuit using power supply load short-circuit protection circuit |
| CN103019291A (en) * | 2012-12-21 | 2013-04-03 | 上海宏力半导体制造有限公司 | Low-voltage-difference linear voltage stabilizer circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110504523A (en) * | 2019-08-30 | 2019-11-26 | 深圳市威益德科技有限公司 | Antenna installation method, mounting structure and the vehicle electronics product of vehicle electronics product |
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| Publication number | Publication date |
|---|---|
| CN104020811B (en) | 2016-03-02 |
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