CN206314028U - One kind compensation drive device - Google Patents
One kind compensation drive device Download PDFInfo
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- CN206314028U CN206314028U CN201621334380.3U CN201621334380U CN206314028U CN 206314028 U CN206314028 U CN 206314028U CN 201621334380 U CN201621334380 U CN 201621334380U CN 206314028 U CN206314028 U CN 206314028U
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Abstract
The utility model discloses one kind compensation drive device, including input exchange signal is changed into direct current signal, and start and control the VCC circuits of the device simultaneously；Compensation circuit with regulating load regulation and temperature coefficient；Power inverter including chip control module；Wherein, power inverter is connected with VCC circuits, compensation circuit respectively.The utility model has a simple structure, low cost, the features such as load regulation and temperature coefficient is greatly improved.
Description
Technical field
The utility model is related to LED control circuit technology, specifically a kind of compensation drive device.
Background technology
With continuing to develop for society, Lighting Industry is maked rapid progress, used as non-energy-conserving light sources such as replacement incandescent lamp, electricity-saving lamps
LED illumination product, pollution-free with its long lifespan, environment-protecting energy-saving lamp advantage obtains the favor of increasing consumer.
For illuminating product, in addition to the illumination functions of itself, people are also to the electrical property under its various environment, service life
There is higher and higher requirement etc. function, this just becomes more severe for the requirement of the stability of freestanding drive device
Carve.
In face of increasingly competitive LED illumination market, the cost of LED illumination product constantly declines, and function is continuously increased,
The stability of product is also increasingly taken seriously.The compensation of its load regulation of product in the market and temperature coefficient is mostly leaned on
Chip itself is realized.But the compensation essence of the load regulation of many control chips and temperature coefficient due to cost
Degree can not fully meet the requirement of LED driver performance.This proposes new challenge to driver design.
Utility model content
The purpose of this utility model is to overcome the shortcomings of that above prior art is present, there is provided a kind of simple structure, is made
Valency is cheap, and the compensation drive device of load regulation and temperature coefficient is greatly improved.
In order to achieve the above object, the utility model uses following technical scheme：One kind compensation drive device, including will be defeated
Enter AC signal and change into direct current signal, and start and control the VCC circuits of the device simultaneously；
Compensation circuit with regulating load regulation and temperature coefficient；
Power inverter including chip control module；
Wherein, power inverter is connected with VCC circuits, compensation circuit respectively.
The compensation circuit includes amplifying circuit and shunt circuit.
The amplifying circuit includes first resistor R1, second resistance R2, electric three resistance R3, the 4th resistance R4, the first voltage stabilizing
Pipe ZDS1 and the first triode Q1；Wherein, first resistor R1 first ends are connected with second circuit, second end of first resistor R1 with
The first end of second resistance R2 is connected with the base stage of the first triode Q1, and second end of second resistance R2 is connected with the first circuit,
The first end of the 4th resistance R4 is connected with second circuit, and second end of the 4th resistance R4 is connected with the first end of 3rd resistor R3,
Second end of 3rd resistor R3 is connected with the emitter stage of the first triode Q1, colelctor electrode and the tertiary circuit phase of the first triode Q1
Even, the A ends of the first voltage-stabiliser tube ZDS1 are connected with second end of the 4th resistance R4 and the first end of 3rd resistor R3, the first voltage-stabiliser tube
The K ends of ZDS1 are connected with the first circuit.
The shunt circuit includes the 5th resistance R5, the first thermistor NTC；Wherein, the first end of the 5th resistance R5 and
Tertiary circuit is connected, and second end of the 5th resistance R5 is connected with the first end of the first thermistor NTC, the first thermistor NTC
The second end be connected with the first circuit.
The first triode Q1 is PNP type triode.
The topology of the power converter circuit is one of following item：Buck, boost type, buck/boost formula, inverse-excitation type
And positive activation type.
First circuit is ground；Second circuit is VCC circuit output ends；Tertiary circuit is the electric current inspection of power inverter
Survey pin.
The implementation method of above-mentioned compensation drive device, comprises the following steps：
(1) as input signal it is, direct current signal through VCC circuit conversions using civil power, the signal powers to chip VCC, core
Piece starts, and power inverter is started working；
(2), compensation circuit is again by chip VCC and current detecting pin signal sampling, analysis, when output loading or temperature
During change, regulating load regulation and temperature coefficient change output current, so as to realize improving load regulation and temperature coefficient
Compensation.
Step (2) concrete mode is：When electricity on device, VIN is the benefit of core by around the first triode Q1
Repay circuit and carry out adjustment device work state, now, VIN makes the first triode Q1 by first resistor R1 and second resistance R2 partial pressures
Conducting, then powered with this to the first voltage-stabiliser tube ZDS1 by the 4th resistance R4 and to ensure that the first triode Q1 is operated in Linear Amplifer
Area；When output loading becomes weight, VIN also becomes big, the first triode Q1 base currents increase therewith, and emitter current is also into multiplication
Greatly, after the sampling of chip current detection pin, regulation output current is allowed to increase, so as to greatly improve load regulation；Relative to
Temperature-compensation circuit, when temperature is raised, the first thermistor NTC resistances reduce, after chip current detection pin sampling, regulation output
Electric current is allowed to increase, so as to realize temperature-compensating.
The first triode Q1 must operate at linear amplification region, first resistor R1, second resistance R2,3rd resistor R3
It it is 10~80 kilo-ohms with the resistance of the 4th resistance R4；First thermistor NTC is 9~30K, and temperature is changed by adjusting the 5th resistance
Degree compensation precision.
The utility model has the following advantages and effect relative to prior art：
1st, the utility model includes for input exchange signal changing into direct current signal, and starts simultaneously and control the device
VCC circuits；Compensation circuit with regulating load regulation and temperature coefficient；Power inverter including chip control module；
Wherein, power inverter is connected with VCC circuits, compensation circuit respectively；With simple structure, low cost is greatly improved load
The features such as regulation and temperature coefficient.
2nd, the VCC circuits in the utility model are powered by two electric resistance partial pressures to transistor base, while voltage-stabiliser tube is given
Transistor emitter is powered, and colelctor electrode is connected with chip current detection pin, it is ensured that triode operation works as output voltage in amplification region
Change, emitter current can also change therewith, so that chip changes output current to improve load regulation.
3rd, the shunt circuit in the utility model, chip current detection pin connects a thermistor and conventional, electric-resistance to ground,
When temperature is raised, thermistor resistance reduces, and makes chip change output current to realize temperature-compensating.
4th, the simple low cost of the utility model circuit structure, only only needing to several components can just realize as expected
Effect.
5th, load regulation and temperature compensation function are all integrated in control core by most drive devices on the market at present
In piece, power is bigger, and its effect is more bad, and when loading range broadens, line regulation can be deteriorated, when environment temperature is raised,
The precision of output current is poorer.But the utility model realizes the compensation work(for improving load regulation and temperature coefficient well
Can, and its precision can be arbitrarily adjusted according to needed for client, and more facilitate, flexibly, can well ensure the steady of device
It is qualitative.
Brief description of the drawings
Fig. 1 is a kind of connection block diagram for compensating drive device；
Fig. 2 is the circuit diagram of compensation circuit in the utility model.
Specific embodiment
For ease of it will be appreciated by those skilled in the art that below in conjunction with the accompanying drawings and embodiment the utility model is made it is further in detail
Describe in detail bright.
Embodiment 1：
As shown in Fig. 1~2, one kind compensation drive device, including input exchange signal is changed into direct current signal, and simultaneously
Start and control the VCC circuits of the device；Compensation circuit with regulating load regulation and temperature coefficient；Including chip controls
The power inverter of module；Wherein, power inverter is connected with VCC circuits, compensation circuit respectively.
Compensation circuit in the present embodiment includes amplifying circuit and shunt circuit.As shown in Fig. 2 amplifying circuit includes first
Resistance R1, second resistance R2, electric three resistance R3, the 4th resistance R4, the first voltage-stabiliser tube ZDS1 and the first triode Q1；Wherein,
One resistance R1 first ends are connected with second circuit, second end of first resistor R1 and the first end of second resistance R2 and the one or three pole
The base stage of pipe Q1 is connected, and second end of second resistance R2 is connected with the first circuit, the first end and second circuit of the 4th resistance R4
It is connected, second end of the 4th resistance R4 is connected with the first end of 3rd resistor R3, the second end and the one or three pole of 3rd resistor R3
The emitter stage of pipe Q1 is connected, and the colelctor electrode of the first triode Q1 is connected with tertiary circuit, the A ends and the 4th of the first voltage-stabiliser tube ZDS1
Second end of resistance R4 is connected with the first end of 3rd resistor R3, and the K ends of the first voltage-stabiliser tube ZDS1 are connected with the first circuit；Shunting
Circuit includes the 5th resistance R5, the first thermistor NTC；Wherein, the first end of the 5th resistance R5 is connected with tertiary circuit, and the 5th
Second end of resistance R5 is connected with the first end of the first thermistor NTC, second end of the first thermistor NTC and the first circuit
It is connected.
The first triode Q1 in the present embodiment is PNP type triode；The topology of power converter circuit be following item it
One：Buck, boost type, buck/boost formula, inverse-excitation type and positive activation type, the present embodiment use buck.
The first circuit in the present embodiment is ground；Second circuit is VCC circuit output ends；Tertiary circuit is power inverter
Current detecting pin.
The implementation method of above-mentioned compensation drive device, comprises the following steps：
(1) as input signal it is, direct current signal through VCC circuit conversions using civil power, the signal powers to chip VCC, core
Piece starts, and power inverter is started working；
(2), compensation circuit is again by chip VCC and current detecting pin signal sampling, analysis, when output loading or temperature
During change, regulating load regulation and temperature coefficient change output current, so as to realize improving load regulation and temperature coefficient
Compensation.
Step (2) concrete mode is：When electricity on device, VIN is the benefit of core by around the first triode Q1
Repay circuit and carry out adjustment device work state, now, VIN makes the first triode Q1 by first resistor R1 and second resistance R2 partial pressures
Conducting, then powered with this to the first voltage-stabiliser tube ZDS1 by the 4th resistance R4 and to ensure that the first triode Q1 is operated in Linear Amplifer
Area；When output loading becomes weight, VIN also becomes big, the first triode Q1 base currents increase therewith, and emitter current is also into multiplication
Greatly, after the sampling of chip current detection pin, regulation output current is allowed to increase, so as to greatly improve load regulation；Relative to
Temperature-compensation circuit, when temperature is raised, the first thermistor NTC resistances reduce, after chip current detection pin sampling, regulation output
Electric current is allowed to increase, so as to realize temperature-compensating.
The regulating load regulation described in the utility model is realized, the first triode Q1 must operate at Linear Amplifer
Area, first resistor R1, second resistance R2,3rd resistor R3 and the 4th resistance R4 sufficiently large (tens kilohms, such as 10~80,000
Europe)；The temperature-compensating described in the utility model is realized, the first thermistor NTC is moderate (such as：10K), by regulation
5th resistance can change temperature-compensating precision.
Although this first triode Q1 sampling PNP type triode in embodiment improves load regulation and temperature to constitute
The compensation circuit of coefficient, VIN voltage and current detecting are from control IC samplings, but the utility model not limited to this, this area
Technical staff is readily conceivable that sampling NPN type triode to constitute compensation circuit, and VIN voltage and current detecting are from Voltage loop and electricity
Stream sampling, and change other components accordingly, the change should be included within the scope of the utility model.
In addition those skilled in the art are it can also be appreciated that constitute raising load regulation using p-type or N-type metal-oxide-semiconductor
With the compensation circuit of temperature coefficient, and change other components accordingly, the change should also be included in the utility model model
Within enclosing.
Above-mentioned specific embodiment is preferred embodiment of the present utility model, and the utility model can not be defined,
Other any changes made without departing from the technical solution of the utility model or other equivalent substitute modes, are included in
Within protection domain of the present utility model.
Claims (7)
- It is 1. a kind of to compensate drive device, it is characterised in that：Including input exchange signal is changed into direct current signal, and start simultaneously With the VCC circuits for controlling the device；Compensation circuit with regulating load regulation and temperature coefficient；Power inverter including chip control module；Wherein, power inverter is connected with VCC circuits, compensation circuit respectively.
- 2. compensation drive device according to claim 1, it is characterised in that：The compensation circuit includes amplifying circuit and divides Current circuit.
- 3. compensation drive device according to claim 2, it is characterised in that：The amplifying circuit include first resistor R1, Second resistance R2, electric three resistance R3, the 4th resistance R4, the first voltage-stabiliser tube ZDS1 and the first triode Q1；Wherein, first resistor R1 First end is connected with second circuit, the base of second end of first resistor R1 and the first end of second resistance R2 and the first triode Q1 Extremely it is connected, second end of second resistance R2 is connected with the first circuit, and the first end of the 4th resistance R4 is connected with second circuit, the 4th Second end of resistance R4 is connected with the first end of 3rd resistor R3, the transmitting of second end of 3rd resistor R3 and the first triode Q1 Extremely it is connected, the colelctor electrode of the first triode Q1 is connected with tertiary circuit, the of the A ends of the first voltage-stabiliser tube ZDS1 and the 4th resistance R4 Two ends are connected with the first end of 3rd resistor R3, and the K ends of the first voltage-stabiliser tube ZDS1 are connected with the first circuit.
- 4. compensation drive device according to claim 3, it is characterised in that：The shunt circuit include the 5th resistance R5, First thermistor NTC；Wherein, the first end of the 5th resistance R5 is connected with tertiary circuit, second end of the 5th resistance R5 and The first end of one thermistor NTC is connected, and second end of the first thermistor NTC is connected with the first circuit.
- 5. compensation drive device according to claim 4, it is characterised in that：The first triode Q1 is the pole of positive-negative-positive three Pipe.
- 6. compensation drive device according to claim 1, it is characterised in that the topology of the power converter circuit be with One of lower item：Buck, boost type, buck/boost formula, inverse-excitation type and positive activation type.
- 7. compensation drive device according to claim 5, it is characterised in that：First circuit is ground；Second circuit is VCC circuit output ends；Tertiary circuit is the current detecting pin of power inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334380.3U CN206314028U (en) | 2016-12-07 | 2016-12-07 | One kind compensation drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334380.3U CN206314028U (en) | 2016-12-07 | 2016-12-07 | One kind compensation drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206314028U true CN206314028U (en) | 2017-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621334380.3U Active CN206314028U (en) | 2016-12-07 | 2016-12-07 | One kind compensation drive device |
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| CN (1) | CN206314028U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793269A (en) * | 2016-12-07 | 2017-05-31 | 横店集团得邦照明股份有限公司 | One kind compensation drive device and its implementation |
-
2016
- 2016-12-07 CN CN201621334380.3U patent/CN206314028U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106793269A (en) * | 2016-12-07 | 2017-05-31 | 横店集团得邦照明股份有限公司 | One kind compensation drive device and its implementation |
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