CN104977958B - A kind of linear drive system based on non-isolated output buck - Google Patents
A kind of linear drive system based on non-isolated output buck Download PDFInfo
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- CN104977958B CN104977958B CN201510325313.9A CN201510325313A CN104977958B CN 104977958 B CN104977958 B CN 104977958B CN 201510325313 A CN201510325313 A CN 201510325313A CN 104977958 B CN104977958 B CN 104977958B
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- 239000003990 capacitor Substances 0.000 claims abstract description 31
- 230000036772 blood pressure Effects 0.000 claims abstract description 25
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Abstract
The invention discloses a kind of linear drive system based on non-isolated output buck, it is characterised in that: by non-isolated output buck circuit, the linear drive circuit being connected with non-isolated output buck circuit forms；Described non-isolated output buck circuit is by blood pressure lowering chip U1, audion VT5, audion VT6, sequentially after resistance R10, resistance R14, VCC pin with blood pressure lowering chip U1 is connected, N pole forms the diode D7 of input of linear drive system of non-isolated output buck together with the base stage of audion VT6 in P pole, the composition such as positive pole N with diode D7 after resistance R8 is extremely connected, the negative pole polar capacitor C4 that sequentially CS pin with blood pressure lowering chip U1 is connected after resistance R9, resistance R12, polar capacitor C7, resistance R11.The non-isolated output buck circuit of the present invention, reduces system power dissipation, and this circuit has efficient output performance, it is to avoid electrical equipment and drive circuit itself are damaged.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of linear drive system based on non-isolated output buck.
Background technology
Along with the development of science and technology, producing now or all can use drive circuit in life, its development is given
People bring great convenience.But existing drive circuit drives and unsmooth, this is just to electrical equipment
Bring the biggest impact, time serious, also can damage electrical equipment and drive circuit itself.
Summary of the invention
It is an object of the invention to overcome existing drive circuit to drive rough defect, it is provided that a kind of based on non-
The linear drive system of isolation and amplifier blood pressure lowering.
The purpose of the present invention is achieved through the following technical solutions: a kind of based on non-isolated output buck linearly drive
Dynamic system, by non-isolated output buck circuit, and linearly drives with what non-isolated output buck circuit was connected
Galvanic electricity road forms.Described non-isolated output buck circuit is by blood pressure lowering chip U1, audion VT5, audion
VT6, P pole sequentially after resistance R10, resistance R14 VCC pin with blood pressure lowering chip U1 be connected, N
Pole forms the two of the input of the linear drive system of non-isolated output buck together with the base stage of audion VT6
Pole pipe D7, positive pole N pole with diode D7 after resistance R8 is connected, negative pole sequentially through resistance R9,
The polarity that after resistance R12, polar capacitor C7, resistance R11, CS pin with blood pressure lowering chip U1 is connected
Electric capacity C4, P pole sequentially after polar capacitor C5, resistance R13 with the connection of resistance R10 Yu resistance R14
The diode D3, P that point is connected, N pole is connected through the colelctor electrode of polar capacitor C6 with audion VT5
The Zener diode D6 that pole is connected with the emitter stage of audion VT6, N pole is connected with linear drive circuit,
N pole sequentially after resistance R16, resistance R15 junction point with resistance R13 with polar capacitor C5 be connected,
P pole sequentially after colelctor electrode and the junction point of polar capacitor C6, the resistance R20 of audion VT5 with voltage stabilizing
The diode D4 that the N pole of diode D6 is connected, positive pole after resistance R19 with the FB of blood pressure lowering chip U1
Pin is connected, negative pole is connected with the base stage of audion VT6 polar capacitor C8, P pole and audion
After the emitter stage of VT5 is connected, N pole GND pin with blood pressure lowering chip U1 after resistance R17 is connected
The diode D5 of ground connection, and one end is connected with the OUT pin of blood pressure lowering chip U1, the other end and three poles
The adjustable resistance R18 composition that the base stage of pipe VT5 is connected；The colelctor electrode of described audion VT6 with linearly drive
Galvanic electricity road is connected, base stage also junction point with resistance R9 with resistance R12 is connected.
Described linear drive circuit by driving chip U, audion VT1, audion VT2, audion VT3,
Audion VT4, positive pole is connected with the N pole of diode D6, negative pole after resistance R1 with driving chip U
The polar capacitor C1 that is connected of IN1 pin, one end is connected with the colelctor electrode of audion VT1, the other end
The resistance R2 that base stage with audion VT3 is connected after resistance R3, the base stage of positive pole and audion VT1
Be connected, polar capacitor C3 that negative pole is connected with the IN1 pin of driving chip U, positive pole and driving chip
The polar capacitor C2 that the IN2 pin of U is connected, negative pole is connected with the colelctor electrode of audion VT6, one end
Be connected with the emitter stage of audion VT1, resistance R5 that the other end is connected with the base stage of audion VT2,
The resistance that one end is connected with the base stage of audion VT2, the other end is connected with the base stage of audion VT3
R4, N pole is connected with the colelctor electrode of audion VT1, P pole is connected with the colelctor electrode of audion VT2
Diode D1, positive terminal is connected with the colelctor electrode of audion VT1, end of oppisite phase and audion VT4 current collection
The not gate K that pole is connected, one end is connected with audion VT4 emitter stage, the other end after resistance R6 with
The end of oppisite phase of resistance R7, P pole NAND gate K that the emitter stage of audion VT3 is connected is connected, N pole with
The diode D2 composition that the junction point of resistance R7 and resistance R6 is connected；The VCC of described driving chip U
Pin is connected with the base stage of audion VT1, END pin ground connection, OUT pin and audion VT2
Colelctor electrode is connected, and the colelctor electrode of audion VT2 also base stage with audion VT4 is connected, its emitter stage
Be connected with the base stage of audion VT3, the grounded collector of audion VT3, the N pole of diode D2 and
P pole is together as the outfan of the linear drive system of non-isolated output buck.
For guaranteeing using effect, described driving chip U is the integrated chip of LM387, described blood pressure lowering chip U1
For the integrated chip of AP3766.
The present invention compared with the prior art, has the following advantages and beneficial effect:
(1) present invention is provided with non-isolated output buck circuit, reduces system power dissipation, improves efficiency,
This circuit has efficient output performance, effectively improves the stability of drive system.
(2) driving that electrical equipment can be smoothed by the linear drive circuit of the present invention, it is to avoid electricity consumption sets
Standby and drive circuit itself is damaged.
(3) present invention use LM387 chip as driving chip, its highly sensitive, low price.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not
It is limited to this.
Embodiment
As it is shown in figure 1, the present invention is by non-isolated output buck circuit, it is connected with non-isolated output buck circuit
The linear drive circuit composition connect.
Wherein, described non-isolated output buck circuit by blood pressure lowering chip U1, audion VT5, audion VT6,
P pole sequentially after resistance R10, resistance R14 VCC pin with blood pressure lowering chip U1 be connected, N pole with
The base stage of audion VT6 forms the diode of the input of the linear drive system of non-isolated output buck together
D7, positive pole N pole with diode D7 after resistance R8 is connected, negative pole is sequentially through resistance R9, resistance
The polar capacitor that after R12, polar capacitor C7, resistance R11, CS pin with blood pressure lowering chip U1 is connected
C4, P pole sequentially after polar capacitor C5, resistance R13 junction point with resistance R10 with resistance R14 be connected
Connect, diode D3, P pole and three that N pole is connected through the colelctor electrode of polar capacitor C6 with audion VT5
Zener diode D6, the N pole that emitter stage is connected, N pole is connected with linear drive circuit of pole pipe VT6
Sequentially after resistance R16, resistance R15 junction point with resistance R13 with polar capacitor C5 be connected, P pole
Sequentially after colelctor electrode and the junction point of polar capacitor C6, the resistance R20 of audion VT5 with voltage stabilizing two pole
The diode D4 that the N pole of pipe D6 is connected, positive pole is managed with the FB of blood pressure lowering chip U1 after resistance R19
Polar capacitor C8, the P pole that foot is connected, negative pole is connected with the base stage of audion VT6 and audion VT5
Emitter stage be connected, N pole GND pin with blood pressure lowering chip U1 after resistance R17 be connected after ground connection
Diode D5, and one end is connected with the OUT pin of blood pressure lowering chip U1, the other end and audion
The adjustable resistance R18 composition that the base stage of VT5 is connected.
The colelctor electrode of described audion VT6 is connected with linear drive circuit, base stage also with resistance R9 with electricity
The junction point of resistance R12 is connected.
For preferably implementing the present invention, described blood pressure lowering chip U1 employs the integrated chip of AP3766, this core
Sheet input ac voltage wide ranges, can effectively control voltage regulation factor and load in the range of AC60～300V
Regulation；It also has frequency jitter and dynamic self-powered, short circuit is restarted automatically, current limliting, overheated, limit
The function of Duty, just effectively raises the stability of drive system.
Described linear drive circuit by driving chip U, audion VT1, audion VT2, audion VT3,
Audion VT4, positive pole is connected with the N pole of diode D6, negative pole after resistance R1 with driving chip U
The polar capacitor C1 that is connected of IN1 pin, one end is connected with the colelctor electrode of audion VT1, the other end
The resistance R2 that base stage with audion VT3 is connected after resistance R3, the base stage of positive pole and audion VT1
Be connected, polar capacitor C3 that negative pole is connected with the IN1 pin of driving chip U, positive pole and driving chip
The polar capacitor C2 that the IN2 pin of U is connected, negative pole is connected with the colelctor electrode of audion VT6, one end
Be connected with the emitter stage of audion VT1, resistance R5 that the other end is connected with the base stage of audion VT2,
The resistance that one end is connected with the base stage of audion VT2, the other end is connected with the base stage of audion VT3
R4, N pole is connected with the colelctor electrode of audion VT1, P pole is connected with the colelctor electrode of audion VT2
Diode D1, positive terminal is connected with the colelctor electrode of audion VT1, end of oppisite phase and audion VT4 current collection
The not gate K that pole is connected, one end is connected with audion VT4 emitter stage, the other end after resistance R6 with
The end of oppisite phase of resistance R7, P pole NAND gate K that the emitter stage of audion VT3 is connected is connected, N pole with
The diode D2 composition that the junction point of resistance R7 and resistance R6 is connected.
The VCC pin of described driving chip U is connected with the base stage of audion VT1, END pin ground connection,
OUT pin is connected with the colelctor electrode of audion VT2, the colelctor electrode of audion VT2 also with audion VT4
Base stage be connected, its emitter stage is connected with the base stage of audion VT3.
The grounded collector of described audion VT3, the N pole of diode D2 and P pole are together as non-isolated
The outfan of the linear drive system of output buck.
The driving that electrical equipment can be smoothed by the present invention, it is to avoid electrical equipment and drive circuit itself are subject to
Damage.
In order to ensure implementation result, described driving chip U is preferably the integrated chip of LM387, it is highly sensitive,
And low price.
As it has been described above, just can well implement the present invention.
Claims (4)
1. a linear drive system based on non-isolated output buck, it is characterised in that: exported by non-isolated
Reduction voltage circuit, the linear drive circuit being connected with non-isolated output buck circuit forms；Described non-isolated is defeated
Go out reduction voltage circuit by blood pressure lowering chip U1, audion VT5, audion VT6, P pole sequentially through resistance R10,
After resistance R14, the VCC pin with blood pressure lowering chip U1 is connected, N pole is together with the base stage of audion VT6
Forming the diode D7 of the input of the linear drive system of non-isolated output buck, positive pole is after resistance R8
Be connected with the N pole of diode D7, negative pole is sequentially through resistance R9, resistance R12, polar capacitor C7, electricity
Polar capacitor C4, the P pole being connected with the CS pin of blood pressure lowering chip U1 after resistance R11 is sequentially through polar capacitor
After C5, resistance R13, the junction point with resistance R10 with resistance R14 is connected, N pole is through polar capacitor C6
Diode D3, the P pole being connected with the colelctor electrode of audion VT5 is connected with the emitter stage of audion VT6
Connect, Zener diode D6, N pole that N pole is connected with linear drive circuit is sequentially through resistance R16, resistance
After R15, the junction point with resistance R13 with polar capacitor C5 is connected, P pole is sequentially through the collection of audion VT5
Two be connected with the N pole of Zener diode D6 after the junction point of electrode and polar capacitor C6, resistance R20
Pole pipe D4, positive pole FB pin with blood pressure lowering chip U1 after resistance R19 is connected, negative pole and audion
Polar capacitor C8, the P pole that the base stage of VT6 is connected is connected with the emitter stage of audion VT5, N pole warp
The diode D5 of ground connection after GND pin with blood pressure lowering chip U1 is connected after resistance R17, and one end
Be connected with the OUT pin of blood pressure lowering chip U1, the other end is adjustable with what the base stage of audion VT5 was connected
Resistance R18 forms；The colelctor electrode of described audion VT6 is connected with linear drive circuit, base stage also with electricity
The junction point of resistance R9 and resistance R12 is connected.
A kind of linear drive system based on non-isolated output buck the most according to claim 1, it is special
Levy and be: described linear drive circuit is by driving chip U, audion VT1, audion VT2, audion
VT3, audion VT4, positive pole is connected with the N pole of diode D6, negative pole after resistance R1 with driving
The polar capacitor C1 that the IN1 pin of chip U is connected, one end is connected with the colelctor electrode of audion VT1,
The resistance R2 that other end base stage with audion VT3 after resistance R3 is connected, positive pole and audion VT1
The polar capacitor C3 that base stage is connected, negative pole is connected with the IN1 pin of driving chip U, positive pole with drive
The polar capacitor that IN2 pin is connected, negative pole is connected with the colelctor electrode of audion VT6 of dynamic chip U
C2, one end is connected with the emitter stage of audion VT1, the other end is connected with the base stage of audion VT2
Resistance R5, one end is connected with the base stage of audion VT2, the other end is connected with the base stage of audion VT3
Resistance R4, the N pole connect is connected with the colelctor electrode of audion VT1, the colelctor electrode of P pole and audion VT2
The diode D1 being connected, positive terminal is connected with the colelctor electrode of audion VT1, end of oppisite phase and audion
The not gate K that VT4 colelctor electrode is connected, one end is connected with audion VT4 emitter stage, the other end is through resistance
After R6 the end of oppisite phase of resistance R7, P pole NAND gate K that emitter stage with audion VT3 is connected be connected,
The diode D2 composition that N pole is connected with the junction point of resistance R7 and resistance R6；Described driving chip U
VCC pin be connected with the base stage of audion VT1, END pin ground connection, OUT pin and audion
The colelctor electrode of VT2 is connected, and the colelctor electrode of audion VT2 also base stage with audion VT4 is connected, it
Emitter stage is connected with the base stage of audion VT3, the grounded collector of audion VT3, diode D2's
N pole and P pole are together as the outfan of the linear drive system of non-isolated output buck.
A kind of linear drive system based on non-isolated output buck the most according to claim 2, it is special
Levy and be: described driving chip U is the integrated chip of LM387.
4. according to a kind of based on non-isolated output buck the Linear Driving system described in any one of claim 1～2
System, it is characterised in that: described blood pressure lowering chip U1 is the integrated chip of AP3766.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510325313.9A CN104977958B (en) | 2014-11-29 | 2015-06-14 | A kind of linear drive system based on non-isolated output buck |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410715662.7A CN104467808A (en) | 2014-11-29 | 2014-11-29 | Linear drive circuit |
| CN2014107156627 | 2014-11-29 | ||
| CN201510325313.9A CN104977958B (en) | 2014-11-29 | 2015-06-14 | A kind of linear drive system based on non-isolated output buck |
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| Publication Number | Publication Date |
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| CN104977958A CN104977958A (en) | 2015-10-14 |
| CN104977958B true CN104977958B (en) | 2016-08-17 |
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| CN201410715662.7A Pending CN104467808A (en) | 2014-11-29 | 2014-11-29 | Linear drive circuit |
| CN201510325313.9A Active CN104977958B (en) | 2014-11-29 | 2015-06-14 | A kind of linear drive system based on non-isolated output buck |
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| CN201410715662.7A Pending CN104467808A (en) | 2014-11-29 | 2014-11-29 | Linear drive circuit |
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| CN105132606A (en) * | 2015-10-10 | 2015-12-09 | 成都申川节能环保工程有限公司 | Energy saving control system based on superconduction cooling waste heat power generation of trilinear driving type blast furnace |
| CN105180668A (en) * | 2015-10-10 | 2015-12-23 | 成都申川节能环保工程有限公司 | Low-pass filter type waste heat power generation energy-saving control system based on overvoltage and overcurrent protection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350554A (en) * | 2007-07-20 | 2009-01-21 | 叶燕霞 | Multipath insulation output power supply |
| CN201590919U (en) * | 2009-11-30 | 2010-09-22 | Bcd半导体制造有限公司 | High-power factor high-performance LED driving circuit |
| CN201789654U (en) * | 2009-10-28 | 2011-04-06 | 深圳市德彩光电有限公司 | Non-isolated LED lamp tube constant-current drive power source |
| CN103648223A (en) * | 2013-12-24 | 2014-03-19 | 上海岭芯微电子有限公司 | Multi-channel light-emitting diode (LED) linear driver |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2509003A1 (en) * | 2002-12-09 | 2004-06-24 | Queen's University At Kingston | Non-isolated dc-dc converters with direct primary to load current |
-
2014
- 2014-11-29 CN CN201410715662.7A patent/CN104467808A/en active Pending
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2015
- 2015-06-14 CN CN201510325313.9A patent/CN104977958B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101350554A (en) * | 2007-07-20 | 2009-01-21 | 叶燕霞 | Multipath insulation output power supply |
| CN201789654U (en) * | 2009-10-28 | 2011-04-06 | 深圳市德彩光电有限公司 | Non-isolated LED lamp tube constant-current drive power source |
| CN201590919U (en) * | 2009-11-30 | 2010-09-22 | Bcd半导体制造有限公司 | High-power factor high-performance LED driving circuit |
| CN103648223A (en) * | 2013-12-24 | 2014-03-19 | 上海岭芯微电子有限公司 | Multi-channel light-emitting diode (LED) linear driver |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104977958A (en) | 2015-10-14 |
| CN104467808A (en) | 2015-03-25 |
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Inventor after: Zhang Titong Inventor after: Wang Hui Inventor after: Li Dan Inventor after: Guo Xiang Inventor after: Gao Jie Inventor after: Gao Yujuan Inventor before: Lei Mingfang |
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Effective date of registration: 20160621 Address after: 272200 No. 7 West Wenfeng Road, Jinxiang County, Jining, Shandong Applicant after: State Grid Shandong Electric Power Company Jinxiang County Power Supply Company Applicant after: State Grid Corporation of China Address before: 610000, 1 floor, 11 Tian Long Street, hi tech Zone, Sichuan, Chengdu Applicant before: CHENGDU JIESHENG SCIENCE & TECHNOLOGY CO., LTD. |
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