CN110753422B - Quick start circuit applied to operational amplifier building - Google Patents
Quick start circuit applied to operational amplifier building Download PDFInfo
- Publication number
- CN110753422B CN110753422B CN201910996865.0A CN201910996865A CN110753422B CN 110753422 B CN110753422 B CN 110753422B CN 201910996865 A CN201910996865 A CN 201910996865A CN 110753422 B CN110753422 B CN 110753422B
- Authority
- CN
- China
- Prior art keywords
- resistor
- module
- capacitor
- circuit
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
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.
Description
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.
The first embodiment is as follows: a quick start circuit applied to operational amplifier construction is disclosed, as shown in figure 1, and comprises a first filter module 2, a second filter module 4, a rectifier module 3, a preceding stage quick start circuit 1, a driving module 5, a voltage transformation module 6, a dimming module 10, an output port 11 and a secondary side control module, wherein mains supply is connected with the input end of the rectifier module 3 through the first filter module 2, the output end of the rectifier module 3 is connected with the second filter module 4, the second filter module 4 is respectively connected with the preceding stage quick start circuit 1 and the driving module 5, the driving module 5 is connected with the preceding stage quick start circuit 1, the driving module 5 outputs direct current voltage through the output port 11 through the voltage transformation module 6, the secondary side control circuit comprises a voltage stabilization module 7, a rear stage quick start circuit 8 and a constant current detection module 9, the voltage transformation module 6 is connected with the input end of the voltage stabilization module 7, the output end of the voltage stabilization module 7 is connected with the rear stage quick start circuit 8, the quick start circuit 8 is connected with the constant voltage and constant current detection module 9, and the constant voltage and constant current detection module 9 is respectively connected with the dimming module 10 and the driving module 5.
As shown in fig. 2, the dimming module 10 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 first optocoupler transmitter, 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 connected to one end of the resistor R1, the other terminal of the resistor R1 is grounded via the first optocoupler transmitter, a Vcc terminal of the dimming chip is grounded via the capacitor C4, a GND terminal of the dimming chip is grounded, a SEL terminal of the dimming chip is grounded via a capacitor C2, the CF terminal of the dimming chip is grounded through a capacitor C3, the Vin terminal of the dimming chip is connected to the first terminal of a capacitor C5 and one terminal of a resistor R3, the second terminal of the capacitor C5 is grounded, the other terminal of the resistor R3 is connected to the emitter of a transistor VT1 and one terminal of a resistor R4, the other terminal of the resistor R4 is connected to the SD terminal of the dimming chip and one terminal of a resistor R2, the other terminal of the resistor R2 is grounded, the base of the transistor VT1 is connected to one terminal of a resistor R5 and the cathode of a zener diode Z2, the anode of the zener diode Z2 is grounded, the other terminal of the resistor R5 is connected to the cathode of a rectifier diode D1, the collector of the transistor VT1 and the first terminal of the capacitor C6, the second terminal of the capacitor C6 is grounded, and the anode of the rectifier diode D1 is grounded through an inductor L1. The dimming chip adopts IW339 to realize the receiving conversion of the dimming signal.
As shown in fig. 3, the rear-stage fast start circuit 8 includes 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 to the anode of the current-limiting diode DS84 through the resistor R79, the cathode of the current-limiting diode DS84 is connected to 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 to the resistor R86B.
The voltage stabilizing module 7 comprises a rectifying auxiliary winding circuit and a voltage stabilizing chip, wherein the rectifying auxiliary winding circuit comprises an inductor L41D, an inductor L91A, a rectifying diode D81, a capacitor C81, a capacitor C81 81, a capacitor C81, a resistor R82 81, a resistor R83 81, a resistor R82 81, a resistor R84 81, a resistor R85 81, a triode Q81, a second optical coupling receiving circuit and a voltage stabilizing diode Z81, one end of the inductor L41 81 connected in parallel with the inductor L91 81 is connected with the anode of the rectifying diode D81, the other end of the inductor L41 81 is connected with the VOUT end of the voltage stabilizing chip through the capacitor C81, one end of the resistor R82 81 and one end of the resistor R82 81 are connected with one end of the voltage stabilizing chip, the other end of the resistor R82 is connected with the other end of the voltage stabilizing chip ADJ 81 through the resistor R3683, the resistor R3683 and the other end of the optical coupling circuit R81, the first optical coupling circuit, the other end of the resistor R81 is connected with the first optical coupling receiving end of the voltage stabilizing chip 3683, and the other end of the optical coupling circuit 81, the optical coupling receiving end of the resistor R81, and the optical coupling circuit, the other end of the optical coupling circuit of the resistor R81, the optical coupling circuit, One end of the resistor R84A and one end of the resistor R84B are connected, the other ends of the resistor R84A and the resistor R84B are grounded, the other end of the resistor R85A is connected to one end of the resistor R85B, the first end of the capacitor C81A and the first end of the capacitor C81B, the second end of the capacitor C81A and the second end of the capacitor C81B are grounded, the other end of the resistor R85B is connected to the anode of the current limiting diode DS85, the first end of the capacitor C82A and the first end of the capacitor C B, the second end of the capacitor C82A and the second end of the capacitor C82B are grounded, the cathode of the rectifying diode D81 is connected to the first end of the capacitor C81, one end of the resistor R81 and the collector of the transistor Q81, the base of the transistor Q81 is connected to the cathode of the zener diode Z81, the other end of the resistor R81 and the first end of the zener diode Z81, the second end of the capacitor C81 and the GND, the emitter of the triode Q81 is respectively connected with the VIN end of the voltage stabilization chip, the EN end of the voltage stabilization chip and the resistor R78. The first filtering module comprises a filtering inductor L10, a filtering inductor L20 and a filtering inductor L30, the filtering inductor L10, the filtering inductor L20 and the filtering inductor L30 are all inductors with magnetic cores, 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. The voltage transformation module 6 comprises a voltage transformation circuit and a second optical coupling transmitting 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 coupling transmitting circuit, and the second optical coupling transmitting circuit is correspondingly connected with the second optical coupling receiving circuit. The AP2204 is adopted by the voltage stabilizing chip, so that the stability of the reference voltage transferred by the current limiting diode transfer DS84 is guaranteed.
The constant-voltage constant-current detection module 9 comprises a first optocoupler receiving circuit, a secondary side control chip and a secondary side control circuit, wherein the secondary side control chip adopts a TSM103, the secondary side 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 with the resistor R91 IN parallel and then is respectively connected with an IN-end of the secondary side control chip, a first end of the capacitor C and one end of the resistor R, the other end of the resistor R is grounded, the other end of the capacitor C is respectively connected with a cathode of the current-limiting diode D, an OUT-end of the secondary side control chip and a first end of the capacitor C through the resistor R, a second end of the capacitor C is grounded, and an IN + end of the secondary side control chip is respectively connected with the resistor R, the resistor R, the resistor, the capacitor C, the resistor C, the OUT-end of the resistor R, the resistor C, the resistor R, the resistor C, the resistor R, the resistor C, the resistor R, the resistor C, the resistor R, the resistor C, the resistor C, the resistor C, the resistor R, the resistor, the, The first ends of a resistor R79 and a capacitor C83 are connected, the second end of a capacitor C83 is grounded, the Vcc-end of a secondary control chip is grounded, the VCC + end of the secondary control chip is connected with one end of a resistor R77 and the first end of a capacitor C85 respectively, the second end of a capacitor C85 is grounded, the other end of the resistor R77 is connected with one end of a first optical coupling receiving circuit and one end of a resistor R76 respectively, 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 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 respectively through a current limiting diode D83, the second end of a capacitor C74 is grounded through a resistor R74 and a capacitor C75 respectively, the second end of the capacitor C77 is grounded, the INT2+ end of the secondary control chip is connected with the first end of a capacitor C84 and one end of a resistor R87 respectively, and the other end of the resistor R87 is connected with the resistor R9, The resistor R86B and the resistor R86C are connected, 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 the resistor R75. The first optical coupler transmitting circuit is used for transmitting dimming signals modulated by the dimming module, and the first optical coupler receiving circuit is used for receiving the dimming signals transmitted by the first optical coupler transmitting circuit.
In a specific application, 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 IW339 can receive three signals of 0-10V, PWM and resistance dimming, uniformly convert the signals into PWM signals, feed back the PWM signals to a power output end through an optical coupler, obtain a reference level following the dimming signals by using second-order low-pass filtering, and access the No. 2 operational amplifier positive input end of the TSM 103W. When the intelligent dimming circuit is started, the mains supply supplies power to the power supply driving module 5, the rectified and filtered power is supplied to the driving module 5 to form stable voltage, the direct current is output through the DC output port 11 through the voltage transformation module 6, the circuit needs to have a function of being controlled through a dimming signal to achieve the purpose of the intelligent dimming circuit, the driving module 5 adopts an ICL5102 control chip, a special dimming signal pin is not arranged, and the dimming function needs to be achieved through a current detection loop on the secondary side, therefore, when the current reaches the voltage transformation module, the current firstly enters the voltage stabilization module 7, the current provides stable voltage after being rectified by the auxiliary winding circuit, a reference voltage is provided for a No. 2 operational amplifier of the secondary side control chip TSM103W through the current limiting diode DS84, the current loop is started quickly, then the dimming signal provides another reference voltage to control the current loop, the starting speed of the feedback loop is greatly accelerated, so that the function of quick starting is achieved.
As shown in fig. 4, when the input voltage is 90V, the start-up time of the power supply is 250ms, which is much faster than the fast start-up time of 0.5 s. The invention can realize quick start when the input voltage ranges from 90V to 305VAC, and meets the requirements of most international markets.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (6)
1. A quick start circuit applied to operational amplifier building comprises a first filtering module, a second filtering 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 filtering module is connected with the input end of the rectifying module, the output end of the rectifying module is connected with the second filtering module, the second filtering 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 voltage transformation module via the output port, 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;
the dimming module comprises a dimming chip, a dimming signal input port, a zener diode Z1, a zener diode Z2, a rectifying 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 end of the dimming chip is respectively connected with a first end of the capacitor C1, a first end of the dimming signal input port and a cathode of the zener diode Z1, an anode of the zener diode Z1, a second end of the capacitor C1 and a second end of the dimming signal input port are grounded, a DRV end of the dimming chip is grounded through the resistor R1, a Vcc end of the dimming chip is grounded through the capacitor C4, a GND end of the dimming chip is grounded, a SEL end of the dimming chip is respectively connected with the capacitor C4 and a resistor R4, the second end of the capacitor C5 is grounded, the other end of the resistor R3 is connected to the emitter of the transistor VT1 and one end of the resistor R4, the other end of the resistor R4 is connected to 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 connected to 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 connected to 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;
the secondary side control module comprises a voltage stabilizing module, a rear-stage quick start circuit and a constant-voltage constant-current detection module, the input end of the voltage stabilizing module is connected with the transformation module, the 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 rectifier 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 the inductor L91A in parallel and then connected with the anode of a rectifier diode D81, the cathode of the rectifier diode D81 is connected with the first end of a capacitor C81, one end of a resistor R81 and the collector of the triode Q81, the base of the triode Q81 is connected with the cathode of a voltage stabilizing diode Z81, the other end of the resistor R81 and the first end of a capacitor C81C, and the second end of the capacitor C81 is connected with the second end of the capacitor C81C, The positive pole of a voltage stabilizing diode Z81 is connected with the GND end of a voltage stabilizing chip, and the emitting pole of the triode Q81 is respectively connected with the VIN end of the voltage stabilizing chip, the EN end of the voltage stabilizing chip and the resistor R78;
the rear-stage quick 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, wherein the resistor R78 is connected with the anode of a current-limiting diode DS84 through a resistor R79, the cathode of the current-limiting diode DS84 is respectively connected with the 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 a resistor R86B;
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 the optical signal transmitted by the first optical coupler transmitting circuit;
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 to realize the quick control of the current, so that the quick start of the power supply driving circuit is realized.
2. The quick starting circuit applied to operational amplifier building according to claim 1, 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.
3. 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.
4. 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.
5. The fast start circuit applied to operational amplifier building according to claim 1, 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 OUT 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, the secondary side control chip is respectively connected with a second terminal of the resistor R A and a positive terminal of the resistor R A, and a second terminal of the secondary side control chip, the secondary side of the capacitor C A, and the secondary side control chip, and the secondary side of the capacitor C A are respectively connected with a cathode of the secondary side of the resistor R A, and the secondary side of the secondary side control chip, 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.
6. The rapid starting circuit applied to operational amplifier building according to claim 1, wherein the model of the secondary control chip is IC-TSM 103W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910996865.0A CN110753422B (en) | 2019-10-19 | 2019-10-19 | Quick start circuit applied to operational amplifier building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910996865.0A CN110753422B (en) | 2019-10-19 | 2019-10-19 | Quick start circuit applied to operational amplifier building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110753422A CN110753422A (en) | 2020-02-04 |
| CN110753422B true CN110753422B (en) | 2021-12-03 |
Family
ID=69278918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910996865.0A Active CN110753422B (en) | 2019-10-19 | 2019-10-19 | Quick start circuit applied to operational amplifier building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110753422B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845651A (en) * | 2006-03-21 | 2006-10-11 | 横店得邦电子有限公司 | Positive feedback abnormal protection circuit |
| CN102238777A (en) * | 2010-05-07 | 2011-11-09 | 惠州元晖光电有限公司 | Triac dimmable power supply unit for LED |
| CN103167686A (en) * | 2012-10-25 | 2013-06-19 | 主力电器（贵阳）有限公司 | Compatible type drive scheme used by light-emitting diode (LED) lighting lamp |
| CN203136261U (en) * | 2013-02-26 | 2013-08-14 | 深圳市展华光电有限公司 | LED light modulation circuit |
| US8629631B1 (en) * | 2011-07-21 | 2014-01-14 | Cooper Technologies Company | Method and system for improving start-up time of a light emitting diode (LED) driver at reduced input voltage |
| CN204191008U (en) * | 2014-11-21 | 2015-03-04 | 佛山冠今光电科技有限公司 | A kind of simple and easy high PFC framework controllable silicon light modulation LED drive power |
| CN204465995U (en) * | 2015-03-30 | 2015-07-08 | 深圳市鹏源电子有限公司 | For the driving power of large-power light-emitting diodes |
| CN104918360A (en) * | 2015-05-03 | 2015-09-16 | 广东瑞德智能科技股份有限公司 | Comprehensive protection circuit of LED power supply |
| EP2922369A1 (en) * | 2014-03-18 | 2015-09-23 | Laurence P. Sadwick | Fluorescent lamp LED replacement |
| CN104994659A (en) * | 2015-07-23 | 2015-10-21 | 佛山冠今光电科技有限公司 | LED dimming circuit |
| CN209402781U (en) * | 2018-11-29 | 2019-09-17 | 深圳市瑞梓光电科技有限公司 | A kind of ultra-thin photovoltaic intelligent dimming power control circuit |
| CN209419941U (en) * | 2018-11-01 | 2019-09-20 | 深圳市崧盛电子股份有限公司 | A kind of low-power consumption fast start circuit of LED drive power |
| CN110753428A (en) * | 2019-09-19 | 2020-02-04 | 浙江凯耀照明有限责任公司 | Isolation dimming circuit built by operational amplifier |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104010405B (en) * | 2013-02-26 | 2016-05-11 | 深圳市展华光电有限公司 | A kind of LED light adjusting circuit |
| CN206585802U (en) * | 2017-03-13 | 2017-10-24 | 深圳市赛诺杰科技有限公司 | Low-voltage dimming power source |
-
2019
- 2019-10-19 CN CN201910996865.0A patent/CN110753422B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1845651A (en) * | 2006-03-21 | 2006-10-11 | 横店得邦电子有限公司 | Positive feedback abnormal protection circuit |
| CN102238777A (en) * | 2010-05-07 | 2011-11-09 | 惠州元晖光电有限公司 | Triac dimmable power supply unit for LED |
| US8629631B1 (en) * | 2011-07-21 | 2014-01-14 | Cooper Technologies Company | Method and system for improving start-up time of a light emitting diode (LED) driver at reduced input voltage |
| CN103167686A (en) * | 2012-10-25 | 2013-06-19 | 主力电器（贵阳）有限公司 | Compatible type drive scheme used by light-emitting diode (LED) lighting lamp |
| CN203136261U (en) * | 2013-02-26 | 2013-08-14 | 深圳市展华光电有限公司 | LED light modulation circuit |
| EP2922369A1 (en) * | 2014-03-18 | 2015-09-23 | Laurence P. Sadwick | Fluorescent lamp LED replacement |
| CN204191008U (en) * | 2014-11-21 | 2015-03-04 | 佛山冠今光电科技有限公司 | A kind of simple and easy high PFC framework controllable silicon light modulation LED drive power |
| CN204465995U (en) * | 2015-03-30 | 2015-07-08 | 深圳市鹏源电子有限公司 | For the driving power of large-power light-emitting diodes |
| CN104918360A (en) * | 2015-05-03 | 2015-09-16 | 广东瑞德智能科技股份有限公司 | Comprehensive protection circuit of LED power supply |
| CN104994659A (en) * | 2015-07-23 | 2015-10-21 | 佛山冠今光电科技有限公司 | LED dimming circuit |
| CN209419941U (en) * | 2018-11-01 | 2019-09-20 | 深圳市崧盛电子股份有限公司 | A kind of low-power consumption fast start circuit of LED drive power |
| CN209402781U (en) * | 2018-11-29 | 2019-09-17 | 深圳市瑞梓光电科技有限公司 | A kind of ultra-thin photovoltaic intelligent dimming power control circuit |
| CN110753428A (en) * | 2019-09-19 | 2020-02-04 | 浙江凯耀照明有限责任公司 | Isolation dimming circuit built by operational amplifier |
Non-Patent Citations (2)
| Title |
|---|
| 可调光原边采样反激式LED控制芯片设计;徐思远;《中国优秀硕士硕士学位论文全文数据库 信息科技辑》;20120815;全文 * |
| 带有光电耦合器延时消除的用于模拟0-10V调光、PWM调光和电阻调光的SSL接口控制器;Dialog Semiconductor;《https://html.alldatasheetcn.com/html-pdf/1010374/DIALOG/IW339/249/1/IW339.html》;20170927;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110753422A (en) | 2020-02-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106132003B (en) | Dual-channel LED driver and control method thereof | |
| CN107920403B (en) | Dual-channel LED driver and short-circuit protection method thereof | |
| CN107426874B (en) | Dimming control power supply for LED lamp | |
| CN202050563U (en) | Flyback dimming LED (light-emitting diode) drive circuit | |
| CN110753428B (en) | Isolation dimming circuit built by operational amplifier | |
| CN201594938U (en) | LED drive circuit | |
| CN102387625A (en) | Direct drive light-emitting diode (LED) driver | |
| CN109039093A (en) | Isolation type switching power supply and its control method | |
| CN103561528A (en) | LED power source platform capable of integrating various dimming ways | |
| CN110753422B (en) | Quick start circuit applied to operational amplifier building | |
| CN201142771Y (en) | Remote control intelligent multi-output LED illumination driver circuit | |
| TW201603643A (en) | Integrated light-emitting diode driver circuit and method of operating the same | |
| CN211457423U (en) | Light modulation circuit | |
| CN210639479U (en) | Quick start circuit applied to operational amplifier building | |
| CN211297065U (en) | PWM isolation dimming driving power circuit with NFC function | |
| CN109379806B (en) | Dimming drive circuit, dimming controller and LED lamp | |
| CN210868259U (en) | Isolated dimming circuit | |
| WO2015008878A1 (en) | Integrated circuit for lighting and method of controlling lighting | |
| CN201491341U (en) | High-power led power supply circuit | |
| CN208971395U (en) | Isolation type switching power supply | |
| CN211457453U (en) | LED dimming circuit and lighting equipment | |
| CN209949511U (en) | Intelligent control system for luminous environment | |
| CN215073044U (en) | High-power LED light source silicon controlled rectifier dimming circuit | |
| CN111836430B (en) | Self-adaptive CV circuit structure | |
| CN211321211U (en) | Switch power supply enables control signal isolation circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |