阅读说明：本技术 一种应用于运放搭建的快速启动线路 (Quick start circuit applied to operational amplifier building ) 是由 查丰盛 许潇亮 于 2019-10-19 设计创作，主要内容包括：本发明公开了一种应用于运放搭建的快速启动线路,包括第一滤波模块、第二滤波模块、整流模块、前级快速启动电路、副边控制模块、驱动模块、调光模块、变压模块和输出端口,第一滤波模块与整流模块的输入端连接,整流模块的输出端与第二滤波模块连接,第二滤波模块分别与驱动模块以及前级快速启动电路连接,驱动模块与前级快速启动电路连接,驱动模块通过变压模块经输出端口输出直流电压,变压模块与副边控制模块连接,副边控制模块分别与调光模块以及驱动模块连接。本发明启动时,通过二极管给恒压恒流检测模块一个基准电压,实现环路电流的快速工作,达到电源驱动电路快速启动的目的。(The invention discloses a quick start circuit applied to operational amplifier construction, which comprises a first filter module, a second filter module, a rectifying module, a preceding-stage quick start circuit, a secondary side control module, a driving module, a dimming module, a voltage transformation module and an output port, wherein the first filter module is connected with the input end of the rectifying module, the output end of the rectifying module is connected with the second filter module, the second filter module is respectively connected with the driving module and the preceding-stage quick start circuit, the driving module is connected with the preceding-stage quick start circuit, the driving module outputs direct current voltage through the output port through the voltage transformation module, the voltage transformation module is connected with the secondary side control module, and the secondary side control module is respectively connected with the dimming module and the driving module. When the circuit is started, the diode supplies a reference voltage to the constant-voltage constant-current detection module, so that the rapid work of loop current is realized, and the purpose of rapidly starting the power supply driving circuit is achieved.)

1. The utility model provides a be applied to quick start circuit that fortune was put and was built, includes first filter module, second filter module, rectifier module, preceding stage quick start circuit, vice limit control module, drive module, the module of adjusting luminance, vary voltage module and output port, first filter module is connected with rectifier module's input, rectifier module's output and second filter module are connected, second filter module is connected with drive module and preceding stage quick start circuit respectively, drive module is connected with preceding stage quick start circuit, drive module passes through the vary voltage module through output port output DC voltage, the vary voltage module is connected with vice limit control module, vice limit control module is connected with module of adjusting luminance and drive module respectively.

2. The fast start circuit applied to operational amplifier building as claimed in claim 1, wherein the dimming module comprises a dimming chip, a dimming signal input port, a zener diode Z1, a zener diode Z2, a rectifier diode D1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor VT1 and an inductor L1, the DIM terminal of the dimming chip is respectively connected to the first terminal of the capacitor C1, the first terminal of the dimming signal input port and the cathode of the zener diode Z1, the anode of the zener diode Z1, the second terminal of the capacitor C1 and the second terminal of the dimming signal input port are grounded, the DRV terminal of the dimming chip is grounded via the resistor R1, the Vcc terminal of the dimming chip is grounded via the capacitor C4, the GND terminal of the dimming chip is grounded, the SEL end of the dimming chip is grounded through a capacitor C2, the CF end of the dimming chip is grounded through a capacitor C3, the Vin end of the dimming chip is respectively connected with the first end of the capacitor C5 and one end of the resistor R3, the second terminal of the capacitor C5 is grounded, the other terminal of the resistor R3 is connected to the emitter of the transistor VT1 and one terminal of the resistor R4, the other end of the resistor R4 is respectively connected with the SD end of the dimming chip and one end of the resistor R2, the other end of the resistor R2 is grounded, the base of the transistor VT1 is respectively connected with one end of the resistor R5 and the cathode of the Zener diode Z2, the anode of the zener diode Z2 is grounded, the other end of the resistor R5 is respectively connected with the cathode of the rectifier diode D1, the collector of the transistor VT1 and the first end of the capacitor C6, the second end of the capacitor C6 is grounded, and the anode of the rectifier diode D1 is grounded through the inductor L1.

3. The rapid start circuit applied to operational amplifier building according to claim 2, wherein the secondary control module comprises a voltage stabilizing module, a rear-stage rapid start circuit and a constant-voltage constant-current detection module, an input end of the voltage stabilizing module is connected with the voltage transformation module, an output end of the voltage stabilizing module is connected with the rear-stage rapid start circuit, the voltage stabilizing module comprises a rectification auxiliary winding circuit and a voltage stabilizing chip, the rectification auxiliary winding circuit comprises an inductor L41D, an inductor L91A, a rectifier diode D81, a capacitor C81, a capacitor C81C, a resistor R81, a triode Q81 and a zener diode Z81, the inductor L41D is connected with an inductor L91A in parallel and then connected with an anode of the rectifier diode D81, a cathode of the rectifier diode D81 is connected with a first end of the capacitor C81, an end of the resistor R81 and a collector of the triode Q81, and a base of the triode Q81 is connected with a cathode of the zener diode Z81, a cathode of the triode Q81, The other end of the resistor R81 is connected with the first end of the capacitor C81C, the second end of the capacitor C81 is connected with the second end of the capacitor C81C, the anode of the zener diode Z81 and the GND end of the voltage stabilizing chip respectively, and the emitter of the triode Q81 is connected with the VIN end of the voltage stabilizing chip, the EN end of the voltage stabilizing chip and the resistor R78 respectively.

4. The fast starting circuit applied to operational amplifier building as claimed in claim 3, wherein the rear stage fast starting circuit comprises a current limiting diode DS84, a current limiting diode DS85, a resistor R78, a resistor R79, a resistor R86A, a resistor R86B and a resistor R86C, the resistor R78 is connected with an anode of a current limiting diode DS84 through a resistor R79, a cathode of the current limiting diode DS84 is connected with a cathode of the current limiting diode DS85, one end of the resistor R86A and a resistor R86C, and the other end of the resistor R86A is connected with the resistor R86B.

5. The quick start circuit applied to operational amplifier building according to claim 3, wherein the dimming module further comprises a first optical coupler transmitting circuit, the constant voltage constant current detection module comprises a first optical coupler receiving circuit, a secondary side control chip and a secondary side control circuit, the first optical coupler transmitting circuit is connected with a DRV end of the dimming chip through a resistor R1, the first optical coupler receiving circuit is connected with the secondary side control chip, the secondary side control chip is connected with the secondary side control circuit, the first optical coupler transmitting circuit is used for transmitting an optical signal modulated by the dimming module, and the first optical coupler receiving circuit is used for receiving an optical signal transmitted by the first optical coupler transmitting circuit.

6. The quick starting circuit applied to operational amplifier building according to claim 3, wherein the voltage transformation module comprises a voltage transformation circuit and a second optical coupling transmitting circuit, the voltage stabilization module further comprises a second optical coupling receiving circuit, an input end of the voltage transformation circuit is connected with the driving module, an output end of the voltage transformation circuit is connected with the second optical coupling transmitting circuit, the second optical coupling transmitting circuit is correspondingly connected with the second optical coupling receiving circuit, and the second optical coupling receiving circuit is connected with the voltage stabilization chip.

7. The fast starting circuit applied to operational amplifier building according to claim 1, wherein the first filter module comprises a filter inductor L10, a filter inductor L20 and a filter inductor L30, and the filter inductor L10, the filter inductor L20 and the filter inductor L30 are all inductors with magnetic cores.

8. The fast starting circuit applied to operational amplifier building according to claim 1, wherein the rectifying module comprises a bridge rectifying circuit, a voltage stabilizing diode D11, a voltage stabilizing resistor R11 and a voltage stabilizing capacitor C11, and the voltage stabilizing diode D11 and the voltage stabilizing capacitor C11 are connected in parallel and then connected in series between the bridge rectifying circuit and the voltage stabilizing resistor R11.

9. The fast start circuit applied to operational amplifier building according to claim 5, wherein the secondary side control circuit comprises a resistor R91A, a resistor R A, a capacitor C A, a current-limiting diode D A and a current-limiting diode D A, the resistor R91A and the resistor R91A are connected IN parallel and then respectively connected with an IN A-terminal of the secondary side control chip, a first terminal of the capacitor C A and one terminal of the resistor R A, the other terminal of the resistor R A is grounded, the other terminal of the capacitor C A is respectively connected with a cathode of the current-limiting diode D A, a A terminal of the secondary side control chip and a first terminal of the capacitor C A through the resistor R A, the second terminal of the capacitor C A is respectively connected with a ground, and the second terminal of the resistor R A and the secondary side control chip are respectively connected with a cathode of the secondary side of the current-limiting diode, A resistor R79 and a first end of a capacitor C83 are connected, a second end of the capacitor C83 is grounded, a Vcc-end of the secondary control chip is grounded, a VCC + end of the secondary control chip is connected with one end of a resistor R77 and a first end of a capacitor C85 respectively, a second end of the capacitor C85 is grounded, the other end of the resistor R77 is connected with one end of a first optical coupler receiving circuit and one end of a resistor R76 respectively, the other end of the resistor R76 is connected with an anode of a current limiting diode D82, the other end of the first optical coupler receiving circuit is connected with an OUT2 end of the secondary control chip, a first end of a capacitor C74 and a first end of a capacitor C77 respectively through a current limiting diode D83, a second end of the capacitor C74 is grounded through a resistor R74 and a capacitor C75, a second end of the capacitor C77 is grounded, an INT2+ end of the secondary control chip is connected with a first end of a capacitor C84 and a first end of a resistor R87 respectively, the other end of the resistor R87 is respectively connected with a resistor R86A, a resistor R86B and a resistor R86C, the second end of the capacitor C84 is grounded, and the INT 2-end of the secondary side control chip is connected with the driving module through a resistor R75.

10. The rapid starting circuit applied to operational amplifier building according to claim 5, wherein the model of the secondary control chip is IC-TSM 103W.

Technical Field

The invention relates to the technical field of power supplies, in particular to a quick start circuit applied to operational amplifier construction.

Background

With the rapid development of the LED industry, intelligent lighting has slowly entered people's lives, and people have different intelligent requirements, such as inductive, dimming functions, and the like. The market demand for starting time of such lamps is also higher and higher, and faster starting time brings better experience to users. In a high-power intelligent dimming driving power supply, 2-stage, 3-stage or more driving control circuits are often adopted, and one result is that the starting is slow.

For example, a "low power consumption fast start circuit of LED driving power supply" disclosed in chinese patent document, whose publication number CN209419941U, published in 2019, 09 and 20, includes an input rectification circuit, a filter circuit, a fast start circuit, an auxiliary winding power supply circuit, and a PWM control chip, wherein an input end of the input rectification circuit is connected to an ac power supply, an output end of the input rectification circuit is connected to the fast start circuit through the filter circuit, and an output end of the fast start circuit is connected to the PWM control chip; the output end of the auxiliary winding power supply circuit is connected with the quick start circuit, and the output end of the auxiliary winding power supply circuit is connected with the PWM control chip. Realize the quick start of LED drive power supply through quick start circuit, but the quick start circuit of this patent can not be applied to intelligent light adjusting circuit, can't satisfy in the demand of intelligent illumination, consequently still does not solve the slow problem of power drive circuit start among the present intelligent light adjusting circuit.

Disclosure of Invention

The invention mainly solves the problem that the power driving circuit in the intelligent dimming circuit in the prior art is slow to start; the utility model provides a be applied to quick start circuit that operational amplifier was built, put to provide a reference voltage for operational amplifier earlier through the diode, carry out quick feedback, realize quick start.

The technical problem of the invention is mainly solved by the following technical scheme: the utility model provides a be applied to quick start circuit that fortune was put and was built, includes first filter module, second filter module, rectifier module, preceding stage quick start circuit, vice limit control module, drive module, the module of adjusting luminance, vary voltage module and output port, first filter module is connected with rectifier module's input, rectifier module's output and second filter module are connected, second filter module is connected with drive module and preceding stage quick start circuit respectively, drive module is connected with preceding stage quick start circuit, drive module passes through the vary voltage module through output port output DC voltage, the vary voltage module is connected with vice limit control module, vice limit control module is connected with module of adjusting luminance and drive module respectively. The utility model discloses a quick start circuit of preceding stage, the auxiliary drive module of preceding stage quick start circuit, the main power passes through first filter module, rectifier module and second filter module transmit the current for drive module and preceding stage quick start circuit, preceding stage quick start circuit auxiliary drive module starts fast, drive module exports stable direct current voltage through transformer module, when the current transmits transformer module, transformer module transmits current signal to secondary control module, provide a reference voltage for secondary control module earlier, make the current loop quick work, then the module of adjusting luminance transmits the signal of adjusting luminance for secondary control module, be equivalent to another reference voltage, realize the quick control of electric current, feed back the current to drive module, realize the quick start of power drive module.

Preferably, the dimming module includes a dimming chip, a dimming signal input port, a zener diode Z1, a zener diode Z2, a rectifier diode D1, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a transistor VT1, and an inductor L1, wherein a DIM terminal of the dimming chip is respectively connected to a first terminal of the capacitor C1, a first terminal of the dimming signal input port, and a cathode of the zener diode Z1, an anode of the zener diode Z1, a second terminal of the capacitor C1, and a second terminal of the dimming signal input port are grounded, a DRV terminal of the dimming chip is grounded via the resistor R1, a Vcc terminal of the dimming chip is grounded via a capacitor C4, a GND terminal of the dimming chip is grounded, a SEL terminal of the dimming chip is grounded via the capacitor C2, a CF terminal of the dimming chip 3 is grounded, the Vin end of the dimming chip is connected to the first end of a capacitor C5 and one end of a resistor R3, the second end of the capacitor C5 is grounded, the other end of the resistor R3 is connected to the emitter of a transistor VT1 and one end of a resistor R4, the other end of the resistor R4 is connected to the SD end of the dimming chip and one end of a resistor R2, the other end of the resistor R2 is grounded, the base of the transistor VT1 is connected to one end of the resistor R5 and the cathode of a zener diode Z2, the anode of the zener diode Z2 is grounded, the other end of the resistor R5 is connected to the cathode of a rectifier diode D1, the collector of the transistor VT1 and the first end of the capacitor C6, the second end of the capacitor C6 is grounded, and the anode of the rectifier diode D1 is grounded through an inductor L1. The dimming signals which can be received by the dimming signal input port comprise 0-10V dimming signals, PWM dimming signals and adjustable resistance dimming signals, and the dimming signals can be selected through various dimming signals, so that intelligent selection of a dimming circuit is realized. Dimming signal gets into from dimming signal input port, transmits the chip of adjusting luminance through zener diode Z1, and zener diode Z1 prevents that high-voltage interference signal from damaging the chip of adjusting luminance, plays the effect of protection chip of adjusting luminance, adjusts the signal through the chip of adjusting luminance to give vice limit control module with the signal transfer who adjusts, the cooperation is vice limit control module and is realized the quick control of electric current.

Preferably, the secondary side control module comprises a voltage stabilizing module, a rear-stage quick start circuit and a constant-voltage constant-current detection module, an input end of the voltage stabilizing module is connected with the transformation module, an output end of the voltage stabilizing module is connected with the rear-stage quick start circuit, the voltage stabilizing module comprises a rectification auxiliary winding circuit and a voltage stabilizing chip, the rectification auxiliary winding circuit comprises an inductor L41D, an inductor L91A, a rectifying diode D81, a capacitor C81, a capacitor C81C, a resistor R81, a triode Q81 and a voltage stabilizing diode Z81, the inductor L41D is connected with an anode of a rectifying diode D81 after being connected in parallel with an inductor L91A, a cathode of the rectifying diode D81 is respectively connected with a first end of a capacitor C81, one end of a resistor R81 and a collector of a triode Q81, a base of the triode Q81 is respectively connected with a cathode of the rectifying diode Z81, the other end of the resistor R81 and a first end of a capacitor C81C, the second end of the capacitor C81 is connected to the second end of the capacitor C81C, the anode of the zener diode Z81, and the GND end of the zener chip, and the emitter of the triode Q81 is connected to the VIN end of the zener chip, the EN end of the zener chip, and the resistor R78. The voltage on the auxiliary winding circuit is utilized to obtain a stable voltage source, a stable power supply voltage source is formed through a linear voltage stabilizing circuit formed by a triode Q81 and a voltage stabilizing diode Z81, the stable voltage is transmitted to a resistor R78, and a stable reference voltage is transmitted to the constant voltage and constant current detection module through a current limiting diode DS 84.

Preferably, the rear-stage fast start circuit comprises a current-limiting diode DS84, a current-limiting diode DS85, a resistor R78, a resistor R79, a resistor R86A, a resistor R86B and a resistor R86C, the resistor R78 is connected with the anode of the current-limiting diode DS84 through the resistor R79, the cathode of the current-limiting diode DS84 is connected with the cathode of the current-limiting diode DS85, one end of the resistor R86A and the resistor R86C, and the other end of the resistor R86A is connected with the resistor R86B. A reference voltage is firstly provided for the constant-voltage constant-current detection module through the current-limiting diode DS84 through the resistor R78 and the resistor R79, so that a current loop works quickly.

Preferably, the dimming module further comprises a first optical coupler transmitting circuit, the constant-voltage constant-current detection module comprises a first optical coupler receiving circuit, a secondary side control chip and a secondary side control circuit, the first optical coupler transmitting circuit is connected with a DRV end of the dimming chip through a resistor R1, the first optical coupler receiving circuit is connected with the secondary side control chip, the secondary side control chip is connected with the secondary side control circuit, the first optical coupler transmitting circuit is used for transmitting the dimming signal modulated by the dimming module, and the first optical coupler receiving circuit is used for receiving the dimming signal transmitted by the first optical coupler transmitting circuit. The first optical coupler transmitting circuit and the first optical coupler receiving circuit are used for realizing the safe isolation between the dimming module and the constant-voltage constant-current detection module, so that enough electric gaps are formed between the circuits, and the safe work of the circuits is guaranteed.

Preferably, the voltage transformation module comprises a voltage transformation circuit and a second optical coupler transmission circuit, the voltage stabilization module further comprises a second optical coupler receiving circuit, the input end of the voltage transformation circuit is connected with the driving module, the output end of the voltage transformation circuit is connected with the second optical coupler transmission circuit, the second optical coupler transmission circuit is correspondingly connected with the second optical coupler receiving circuit, and the second optical coupler receiving circuit is connected with the voltage stabilization chip. The safety isolation between the voltage transformation module and the voltage stabilization module is realized through the second optical coupling transmitting circuit and the second optical coupling receiving circuit, and the safety of the circuit is guaranteed.

Preferably, the first filter module includes a filter inductor L10, a filter inductor L20, and a filter inductor L30, and the filter inductor L10, the filter inductor L20, and the filter inductor L30 are all inductors with magnetic cores. And the filtering is performed through three groups of filtering inductors, so that the circuit current is more stable.

Preferably, the rectifying module comprises a bridge rectifying circuit, a voltage stabilizing diode D11, a voltage stabilizing resistor R11 and a voltage stabilizing capacitor C11, wherein the voltage stabilizing diode D11 is connected in parallel with the voltage stabilizing capacitor C11 and then connected in series between the bridge rectifying circuit and the voltage stabilizing resistor R11. The alternating current is converted into direct current through a bridge rectifier circuit, and the oscillating direct current is stabilized through a voltage stabilizing circuit formed by a voltage stabilizing diode D11, a voltage stabilizing resistor R11 and a voltage stabilizing capacitor C11.

Preferably, the secondary control circuit comprises a resistor R91, a resistor R, a capacitor C, a current limiting diode D and a current limiting diode D, the resistor R91 is connected IN parallel with the resistor R91 and then respectively connected with an IN-terminal of the secondary control chip, a first terminal of the capacitor C and one terminal of the resistor R, the other terminal of the resistor R is grounded, the other terminal of the capacitor C is respectively connected with a cathode of the current limiting diode D, an OUT terminal of the secondary control chip and a first terminal of the capacitor C through the resistor R, the second terminal of the capacitor C is grounded, an IN + terminal of the secondary control chip is respectively connected with the resistor R, the resistor R and a first terminal of the capacitor C, and the second terminal of the capacitor C is grounded, the Vcc-end of the secondary control chip is grounded, the Vcc + end of the secondary control chip is respectively connected with one end of a resistor R77 and a first end of a capacitor C85, the second end of the capacitor C85 is grounded, the other end of the resistor R77 is respectively connected with one end of a first optical coupling receiving circuit and one end of a resistor R76, the other end of the resistor R76 is connected with the anode of a current limiting diode D82, the other end of the first optical coupling receiving circuit is respectively connected with the OUT2 end of the secondary control chip, the first end of a capacitor C74 and the first end of a capacitor C77 through a current limiting diode D83, the second end of a capacitor C74 is grounded through a resistor R74 and a capacitor C75, the second end of the capacitor C77 is grounded, the INT2+ end of the secondary control chip is respectively connected with the first end of a capacitor C84 and one end of a resistor R87, the other end of the resistor R87 is respectively connected with a resistor R86R 585, a resistor R86R B and a resistor R57324, the second end of the capacitor C84 is grounded, and the INT 2-end of the secondary side control chip is connected with the driving module through a resistor R75. The rectification auxiliary winding circuit provides a power voltage for the secondary control circuit, so that the secondary control chip works, the current and voltage are controlled and fed back to the driving module, the driving module responds quickly, and the power supply is started quickly.

Preferably, the model of the secondary control chip is IC-TSM 103W. The TSM103W is a chip with a built-in dual operational amplifier, and is particularly suitable for constant voltage and constant current detection, the reverse input end of the No. 2 operational amplifier is used for detecting the voltage on the current sampling resistor, and the forward input end is connected to an adjustable reference level, so that secondary side dimming can be realized.

The invention has the beneficial effects that: (1) after the power supply is electrified, a stable direct current voltage is formed through the rectification auxiliary winding circuit and is transmitted to the current limiting diode DS84, a reference voltage is firstly given to the secondary control chip through the current limiting diode DS84, so that a current loop starts to work, and after a dimming signal of the dimming module is transmitted to the secondary control chip, a second reference voltage is given, so that the rapid control of the current is realized, and the rapid starting of the power supply driving circuit is realized.

Drawings

Fig. 1 is a block diagram of the first embodiment.

Fig. 2 is a schematic circuit diagram of a dimming module according to the first embodiment.

Fig. 3 is a schematic circuit diagram of a secondary control module according to a first embodiment.

Fig. 4 is a graph of the input voltage versus start-up time operation results of the first embodiment.

In the figure, 1, a front-stage quick starting circuit, 2, a first filtering module, 3, a rectifying module, 4, a second filtering module, 5, a driving module, 6, a voltage transformation module, 7, a voltage stabilizing module, 8, a rear-stage quick starting circuit, 9, a constant voltage and constant current detection module, 10, a dimming module and 11 are output ports.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.