CN104020811B - Plurality of voltages regulator circuit - Google Patents
Plurality of voltages regulator circuit Download PDFInfo
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- CN104020811B CN104020811B CN201410256554.8A CN201410256554A CN104020811B CN 104020811 B CN104020811 B CN 104020811B CN 201410256554 A CN201410256554 A CN 201410256554A CN 104020811 B CN104020811 B CN 104020811B
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- output end
- voltage output
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- 230000000087 stabilizing effect Effects 0.000 claims abstract description 5
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 4
- 230000001012 protector Effects 0.000 claims description 4
- 238000013021 overheating Methods 0.000 claims description 3
- 238000005286 illumination Methods 0.000 abstract description 3
- 238000010586 diagram 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
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- Continuous-Control Power Sources That Use Transistors (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of plurality of voltages regulator circuit, this circuit has the little feature of standby current, and this circuit comprises four tunnel voltage stabilizings and exports.The first via exports as 9V, and the second tunnel exports as 5V, and the 3rd tunnel exports Vcc-1.2v, and this three tunnel exports and turns off by CTRL pin.4th tunnel independently exports as 5V, and the present invention can be used as the power supply of the circuit such as microcontroller, CD driver, audio frequency control, illumination of multimedia system, and it is convenient, safe and reliable to control.
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, big current, low-power dissipation power supply be at present:
1, with multiple integrated voltage-stabilized chip.Shortcoming: cost high (Material Cost, production cost, later stage failure rate), power consumption large (because big 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 higher to electromagnetic requirements 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 output and control convenient, safe and reliable plurality of voltages regulator circuit by multipath voltage regulation.
Plurality of voltages regulator circuit, comprise current input terminal VCC, earth terminal GND and four road output end of pressure-stabilizing mouths, four road output end of pressure-stabilizing mouths are respectively the first voltage output end mouth, the second voltage output end mouth, tertiary voltage output port and the 4th voltage output end mouth, 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 tunnels and exports, operational amplification circuit of wherein leading up to is connected with the 4th voltage output end mouth, other three tunnels by gauge tap CTRL respectively with the first voltage output end mouth, second voltage output end mouth is connected with tertiary voltage output port, wherein the first voltage output end mouth, the gauge tap of the second voltage output end mouth and tertiary voltage output port is separate, first voltage output end mouth and be equipped with operational amplification circuit between the second voltage output end mouth and reference voltage generating circuit, voltage stabilizing triode is provided with between tertiary voltage output port and reference voltage generating circuit, in four road output end of pressure-stabilizing mouths, the first voltage output end mouth exports as 9V, second voltage output end mouth output voltage is 5V, tertiary voltage output port output voltage VCC-1.2v, this three tunnel is exported and can be turned off by gauge tap CTRL input low level, and the 4th voltage output end mouth independent output voltages is 5V,
Described plurality of voltages regulator circuit, outer enclosure adopts the packing forms of the TO220B-7L of standard.
Compared with prior art, the invention discloses a kind of plurality of voltages regulator circuit, this circuit has the little feature of standby current, and this circuit comprises four tunnel voltage stabilizings and exports.The first via exports as 9V, and the second tunnel exports as 5V, and the 3rd tunnel exports Vcc-1.2v, and this three tunnel exports and turns off by CTRL pin.4th tunnel independently exports as 5V, and the present invention can be used as the power supply of the circuit such as microcontroller, CD driver, audio frequency control, illumination of multimedia system, and it is convenient, safe and reliable to control.
Accompanying drawing explanation
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, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained 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 GND and four road output end of pressure-stabilizing mouths, four road output end of pressure-stabilizing mouths are respectively the first voltage output end mouth, the second voltage output end mouth, tertiary voltage output port and the 4th voltage output end mouth, 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 tunnels and exports, operational amplification circuit of wherein leading up to is connected with the 4th voltage output end mouth, other three tunnels by gauge tap CTRL respectively with the first voltage output end mouth, second voltage output end mouth is connected with tertiary voltage output port, wherein the first voltage output end mouth, the gauge tap of the second voltage output end mouth and tertiary voltage output port is separate, first voltage output end mouth and be equipped with operational amplification circuit between the second voltage output end mouth and reference voltage generating circuit, voltage stabilizing triode is provided with between tertiary voltage output port and reference voltage generating circuit, in four road output end of pressure-stabilizing mouths, the first voltage output end mouth exports as 9V, second voltage output end mouth output voltage is 5V, tertiary voltage output port output voltage VCC-1.2v, this three tunnel is exported and can be turned off by gauge tap CTRL input low level, and the 4th voltage output end mouth independent output voltages is 5V,
Described plurality of voltages regulator circuit, outer enclosure adopts the packing forms of the TO220B-7L of standard.
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 regulators control chip, is encapsulated as TO22B-7L.This chip comprises road power supply input (5 pin), power supply ground (4 pin), switch control rule (3 pin), three road controllable voltages export and a road Micro Energy Lose independently exports.The wherein first via (7 pin) controlled output 9V, electric current is not less than 400MA; Second tunnel (6 pin) controlled output 5V, circuit is not less than 800MA, the 3rd tunnel (1 pin) controlled output V
cc-1.2V, electric current is not less than 400MA, and the 4th tunnel (2 pin) directly exports 5V, is not less than 200MA.Chip quiescent dissipation is not more than 700UA, and microcontroller, CD driver, audio frequency control, illumination etc. that user can be used as multimedia system need the power supply of multiple power supplies feed circuit.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
Claims (1)
1. plurality of voltages regulator circuit, it is characterized in that: comprise current input terminal VCC, earth terminal GND and four road output end of pressure-stabilizing mouths, four road output end of pressure-stabilizing mouths are respectively the first voltage output end mouth, the second voltage output end mouth, tertiary voltage output port and the 4th voltage output end mouth, 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 tunnels and exports, operational amplification circuit of wherein leading up to is connected with the 4th voltage output end mouth, other three tunnels by gauge tap CTRL respectively with the first voltage output end mouth, second voltage output end mouth is connected with tertiary voltage output port, wherein the first voltage output end mouth, the gauge tap of the second voltage output end mouth and tertiary voltage output port is separate, first voltage output end mouth and be equipped with operational amplification circuit between the second voltage output end mouth and reference voltage generating circuit, voltage stabilizing triode is provided with between tertiary voltage output port and reference voltage generating circuit, in four road output end of pressure-stabilizing mouths, the first voltage output end mouth exports as 9V, second voltage output end mouth output voltage is 5V, tertiary voltage output port output voltage VCC-1.2v, this three tunnel is exported and can be turned off by gauge tap CTRL input low level, and the 4th voltage output end mouth independent output voltages is 5V,
Described plurality of voltages regulator circuit, outer enclosure adopts the packing forms of the TO220B-7L of standard.
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 CN104020811A (en) | 2014-09-03 |
| CN104020811B true CN104020811B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410256554.8A Expired - Fee Related CN104020811B (en) | 2014-06-11 | 2014-06-11 | Plurality of voltages regulator circuit |
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| CN (1) | CN104020811B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI630469B (en) * | 2017-03-03 | 2018-07-21 | Faraday Technology Corporation | Voltage regulator |
Families Citing this family (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 |
Citations (4)
| 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 |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3851303B2 (en) * | 2003-09-08 | 2006-11-29 | ローム株式会社 | Multi-output type power supply device and portable device using the same |
| TWI379182B (en) * | 2008-10-13 | 2012-12-11 | Holtek Semiconductor Inc | Voltage regulator having active foldback current limiting circuit |
-
2014
- 2014-06-11 CN CN201410256554.8A patent/CN104020811B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| 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 |
|---|---|---|---|---|
| TWI630469B (en) * | 2017-03-03 | 2018-07-21 | Faraday Technology Corporation | Voltage regulator |
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| CN104020811A (en) | 2014-09-03 |
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Granted publication date: 20160302 |