CN210111973U

CN210111973U - High-power driver

Info

Publication number: CN210111973U
Application number: CN201921035046.1U
Authority: CN
Inventors: 曲强
Original assignee: Shanghai Bailang Lighting Co Ltd
Current assignee: Shanghai Bailang Lighting Co Ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-02-21
Anticipated expiration: 2029-07-04

Abstract

A high-power driver comprises a power management module, a signal input module, a control module and four output modules, wherein the power management module is used for supplying power to the control module, the signal input module and the output modules respectively; the utility model has the advantages that: the power conversion module is matched with a photoelectric coupler to form a typical power application circuit, an input power supply is isolated and filtered in a mode of an external capacitor, linear isolation is performed on input current, a current-limiting circuit design is added in a signal connection, conversion and output circuit, and the power conversion module and a 485 signal receiver form a signal application circuit, so that the device can drive a load at high power and simultaneously achieve the characteristics of automatic control of data flow direction and reverse current-limiting protection through an I/O circuit.

Description

High-power driver

Technical Field

The utility model relates to a high-power drive field especially relates to a high-power driver.

Background

The DMX high-power device is a driving product in a DMX512 signal network, and can convert a received DMX512 control signal into a PAM signal and drive a load product in a multi-channel high-current mode. DMX high-power driver is as driving product, and the current mainstream product all adopts the mode of constant voltage to change, reaches the power type drive purpose of one-way heavy current, does not have voltage stabilizing circuit design at the power end, can't obtain reasonable restriction to input voltage when the practical application, does not have photoelectric isolation and current limiting circuit design at the output, can't effective control in use avoids because of connecing wrong line or load short circuit to cause the damage of equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-power driver.

In order to realize the purpose, the technical scheme of the utility model is that:

a high-power driver is characterized by comprising a power supply management module, a signal input module, a control module and four output modules, wherein the power supply management module respectively supplies power for the control module, the signal input module and the output modules, the input end of the signal input module receives signals, the output end of the signal input module is connected with the input end of the control module, the output end of the control module is connected with the output modules,

wherein, the power management module comprises a conversion chip and a voltage stabilizer, wherein, pin 1 and pin 2 of the conversion chip are connected with one end of an inductor, the other end of the inductor is used as a power anode, the power anode is connected with the input end of the voltage stabilizer, the output end of the voltage stabilizer outputs power voltage,

the signal input module comprises a communication chip, wherein pins 6 of the communication chip are connected with the positive phase input of a signal, pins 7 of the communication chip are connected with the negative phase input of the signal,

pins

2 and 3 of the communication chip output direction signals, pins 4 of the communication chip are a sending end, pin 1 of the communication chip is a receiving end,

the control module comprises a control chip, wherein pins 2 of the control chip are connected with

pins

2 and 3 of the communication chip, pins 13, 14, 15 and 16 of the control chip are analog-digital conversion pins, pins 18, 19, 20 and 21 of the control chip are pulse width modulation pins,

each output module includes a first triode, a second triode and a field effect transistor, the base of first triode is connected with 18, 19, 20, 21 feet of control chip respectively, the collecting electrode of first triode is connected with the base of second triode, the collecting electrode of second triode is connected with the grid of field effect transistor, signal output part is made to field effect transistor's drain electrode, field effect transistor's source electrode is connected with 13, 14, 15, 16 feet of control chip respectively.

Furthermore, the pin 7 and the pin 8 of the conversion chip are respectively connected with one end of a first diode, one end of a second capacitor and one end of a fifth capacitor, the anode of the first diode is connected with one end of a fourth capacitor, the anode of the first diode is connected with working voltage, the pin 1 and the pin 2 of the conversion chip are connected with one end of an inductor and the cathode of the second diode, the other end of the inductor is connected with one end of a sixth capacitor and one end of a third capacitor, the pin 4 of the conversion chip is connected with one end of a first resistor, a second resistor and one end of a first capacitor, the other end of the second resistor and the other end of the first capacitor are connected with the anode of a power supply, the other end of the first resistor is grounded, the pin 5 of the conversion chip is connected with one end of a third resistor, the other end of the third resistor is grounded with the pin 6 of the conversion chip, the pin 3 of the conversion chip, the fourth capacitor, the second capacitor and the fifth capacitor are, The other ends of the fifth capacitor, the sixth capacitor and the third capacitor and the anode of the second diode are grounded together.

Furthermore, the second diode is a schottky diode, the second capacitor and the third capacitor are polar capacitors, pins 7 and 8 of the conversion chip are connected with the anode of the second capacitor, and the other end of the inductor is connected with the anode of the third capacitor.

Furthermore, the power management module further includes a seventh capacitor, an eighth capacitor, a ninth capacitor and a tenth capacitor, the seventh capacitor and the eighth capacitor are polar capacitors, an input end of the voltage stabilizer is connected with an anode of the seventh capacitor and one end of the ninth capacitor, and an output end of the voltage stabilizer is connected with an anode of the eighth capacitor and one end of the tenth capacitor.

Furthermore, a pin 6 of the communication chip is connected with a negative electrode of a third diode, a pin 7 of the communication chip is connected with a negative electrode of a fifth resistor, a negative electrode of a sixth resistor and a negative electrode of a fourth diode, the other end of the sixth resistor is connected with a power supply voltage, positive electrodes of the third diode and the fourth diode are grounded, the other end of the seventh resistor is connected with one end of an eleventh capacitor, the other end of the eleventh capacitor is connected with a pin 8 of the communication chip,

pins

2 and 3 of the communication chip are connected with one end of an eighth resistor, and the other ends of the eighth resistor and the seventh resistor are grounded together with one end of the eleventh capacitor.

Further, the third diode and the fourth diode are rectifier diodes.

Furthermore, pin 1 of the control chip is connected with one end of a twelfth capacitor, pin 5 of the control chip is connected with one end of a thirteenth capacitor, pin 6 of the control chip is connected with one end of a fourteenth capacitor, pin 6 of the control chip and one end of the fourteenth capacitor are connected with a power supply voltage together, and the other ends of the twelfth capacitor, the thirteenth capacitor and the fourteenth capacitor and pin 4 of the control chip are connected with the ground together.

Furthermore, the base of the first triode is connected with one end of a ninth resistor, the other end of the ninth resistor is connected with one end of a tenth resistor, the other end of the ninth resistor is connected to pins 18, 19, 20 and 21 of the control chip, the collector of the first triode is connected with one end of the eleventh resistor and one end of the twelfth resistor, the other ends of the eleventh resistor and the twelfth resistor are connected with an emitting electrode of a second triode, the emitting electrode of the second triode is connected with the positive electrode of the power supply, the collector of the second triode is respectively connected with one end of the thirteenth resistor, the cathode of the fifth diode and the grid of the field effect tube, and the source electrode of the field effect transistor is respectively connected with one end of a fourteenth resistor and one end of a fifteenth capacitor, and the other ends of the tenth resistor, the thirteenth resistor, the fourteenth resistor and the fifteenth capacitor, the emitter of the first triode and the anode of the fifth diode are commonly grounded.

Further, the fifth diode is a rectifier diode.

The utility model has the advantages that: the power conversion module is matched with a photoelectric coupler to form a typical power application circuit, an input power supply is isolated and filtered in a mode of an external capacitor, linear isolation is performed on input current, a current-limiting circuit design is added in a signal connection, conversion and output circuit, and the power conversion module and a 485 signal receiver form a signal application circuit, so that the device can drive a load at high power and simultaneously achieve the characteristics of automatic control of data flow direction and reverse current-limiting protection through an I/O circuit.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic diagram of a circuit around a middle conversion chip according to the present invention;

FIG. 3 is a schematic diagram of the peripheral circuit of the voltage stabilizer of the present invention;

fig. 4 is a schematic diagram of a signal input module according to the present invention;

fig. 5 is a schematic circuit diagram of the control module according to the present invention;

fig. 6 is a schematic circuit diagram of the middle output module of the present invention.

Reference numerals:

1 power management module, 2 signal input module, 3 control module, 4 output module,

R1 to R14 first to fourteenth resistors, C1 to C15 first to fifteenth capacitors, D1 to D5 first to fifth diodes,

U1 conversion chip, U2 voltage stabilizer, U3 control chip and U4 communication chip

The Q1 first transistor Q2 second transistor Q3 fet VCC supply voltage.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment discloses a high-power driver, which is characterized by comprising a power management module 1, a signal input module 2, a control module 3 and four output modules 4, wherein the power management module 1 supplies power to the control module 3, the signal input module 2 and the output modules 4 respectively, the input end of the signal input module 2 receives signals, the output end of the signal input module 2 is connected with the input end of the control module 3, and the output end of the control module 3 is connected with the output modules 4, as shown in fig. 1.

As shown in fig. 2 and fig. 3, the power management module 1 includes a conversion chip U1 and a regulator U2, the conversion chip U1 employs XL4001, XL4001 is a 150KHz fixed frequency pulse width modulation (buck) DC/DC converter, which has 2A load driving capability and high efficiency, low ripple and excellent linearity, and good load regulation capability, and requires only minimum external components, the 1 pin and 2 pin of the conversion chip U1 are connected to one end of an inductor L, the other end of the inductor L serves as a power supply positive electrode V +, the regulator U2 employs 78L05, the input voltage can reach 30-35V, the output current can reach 100mA, no external components are required, thermal overload protection and short-circuit current limitation are provided inside, the power supply positive electrode V + is connected to an input terminal of a regulator U2, and the output terminal of the regulator U2 outputs a power supply voltage VCC.

The pin 7 and the pin 8 of the conversion chip U1 are respectively connected with one end of a first diode D1, one end of a second capacitor C2 and one end of a fifth capacitor C5, the anode of the first diode D1 is connected with one end of a fourth capacitor C4, the anode of the first diode D1 is connected with the working voltage VDD, the pin 1 and the pin 2 of the conversion chip U1 are connected with one end of an inductor and the cathode of the second diode D2, the other end of the inductor is connected with one end of a sixth capacitor C6 and one end of a third capacitor C3, the pin 4 of the conversion chip U1 is connected with one end of a first resistor R1, a second resistor R2 and a first capacitor C1, the other end of the second resistor R2 and the first capacitor C1 is connected with the positive power supply electrode V +, the other end of the first resistor R1 is grounded, the pin 5 of the conversion chip U1 is connected with one end of a third resistor R5, the other end of the third resistor R3 is connected with the ground of the conversion chip U5736, the pin 3 of the conversion chip U1, the fourth capacitor C4, the second capacitor C2, the fifth capacitor C5, the sixth capacitor C6, the other end of the third capacitor C3 and the anode of the second diode D2 are grounded together.

The second diode D2 is a schottky diode, the second capacitor C2 and the third capacitor C3 are polar capacitors, the 7 pin and the 8 pin of the conversion chip U1 are connected to the anode of the second capacitor C2, and the other end of the inductor L is connected to the anode of the third capacitor C3.

As shown in fig. 3, the power management module 1 further includes a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, and a tenth capacitor C10, where the seventh capacitor C7 and the eighth capacitor C8 are polar capacitors, an input terminal of the voltage regulator U2 is connected to an anode of the seventh capacitor C7 and one end of the ninth capacitor C9, and an output terminal of the voltage regulator U2 is connected to an anode of the eighth capacitor C8 and one end of the tenth capacitor C10.

As shown in fig. 4, the signal input module 2 includes a communication chip U4, the communication chip U4 employs UN485E, which is a 5V power supply, half duplex, low power consumption, RS-485 transceiver meeting the requirements of TIA/EIA-485 standard, 5V power supply, half duplex, 1/8 unit load, allows up to 256 devices to be connected to a bus, and has a driver short-circuit output protection function, an over-temperature protection function, and a low power consumption shutdown function, the pin 6 of the communication chip U4 is connected to a positive phase input of a signal, the pin 7 of the communication chip U4 is connected to a negative phase input of a signal, the

pins

2 and 3 of the communication chip U4 output direction signals, the pin 4 of the communication chip U4 is a transmitting terminal TX, and the pin 1 of the communication chip U4 is a receiving terminal RX.

The communication chip U4 has a pin 6 connected to the negative electrode of a fourth resistor R4, a sixth resistor R6 and a third diode D3, the communication chip U4 has a pin 7 connected to the negative electrodes of a fifth resistor R5, a seventh resistor R7 and a fourth diode D4, the third diode D3 and the fourth diode D4 are rectifier diodes, the other end of the sixth resistor R6 is connected to a power supply voltage VCC, the positive electrodes of the third diode D3 and the fourth diode D4 are grounded, the other end of the seventh resistor R7 is connected to one end of an eleventh capacitor C11, the other end of the eleventh capacitor C11 is connected to the power supply voltage VCC with a pin 8 of the communication chip U4, the

pins

2 and 3 of the communication chip U4 are connected to one end of an eighth resistor R8, and the other ends of the eighth resistor R8, the seventh resistor R7 and the eleventh capacitor C11 are grounded together.

As shown in fig. 5, the control module 3 includes a control chip U3, the control chip U3 employs an STM8S103, which is based on a proprietary 16 MHz kernel and has a complete set of timers, interfaces (UART, SPI, I2C), a 10-bit ADC, internal and external clock control systems, a watchdog, an automatic wake-up unit, and an integrated single-wire debug module, wherein 2 pins of the control chip U3 are connected with 2 pins and 3 pins of a communication chip U4, 13, 14, 15, and 16 pins of the control chip U3 are analog-to-digital conversion pins ADC 1-4, and 18, 19, 20, and 21 pins of the control chip U3 are pulse width modulation pins PWM 1-4.

The 1 foot of control chip U3 is connected with the one end of twelfth electric capacity C12, the 5 feet of control chip U3 is connected with thirteenth electric capacity C13's one end, 6 feet of control chip U3 are connected with one end of fourteenth electric capacity C14, the one end VCC that power voltage VCC is connected jointly to 6 feet of control chip U3 and fourteenth electric capacity C14, the other end of twelfth electric capacity C12, thirteenth electric capacity C13, fourteenth electric capacity C14 and the 4 feet of control chip U3 ground jointly.

As shown in fig. 6, each of the output modules 4 includes a first transistor Q1, a second transistor Q2, and a fet Q3, wherein a base of the first transistor Q1 is connected to pins 18, 19, 20, and 21 of the control chip U3, a collector of the first transistor Q1 is connected to a base of the second transistor Q2, a collector of the second transistor Q2 is connected to a gate of the fet Q3, a drain of the fet Q3 is used as a signal output terminal, and a source of the fet Q3 is connected to pins 13, 14, 15, and 16 of the control chip U3.

A base of the first triode Q1 is connected to one end of a ninth resistor R9, the other end of the ninth resistor R9 is connected to one end of a tenth resistor R10, the other end of the ninth resistor R9 is connected to pins 18, 19, 20 and 21 of the control chip U3, a collector of the first triode Q1 is connected to one ends of an eleventh resistor R11 and a twelfth resistor R12, the other ends of the eleventh resistor R11 and the twelfth resistor R12 are connected to an emitter of a second triode Q2, an emitter of the second triode Q2 is connected to the positive power supply electrode V +, a collector of the second triode Q2 is connected to one end of a thirteenth resistor R13, a cathode of a fifth diode D5 and a gate of a field effect transistor Q3, the fifth diode D5 is a rectifier diode, a source of the field effect transistor Q3 is connected to one ends of a fourteenth resistor R14 and a fifteenth capacitor C15, and a source of the tenth resistor R10 is connected to a gate of a fourteenth resistor R4933, The other ends of the thirteenth resistor R13, the fourteenth resistor R14 and the fifteenth capacitor C15, the emitter of the first transistor Q1 and the anode of the fifth diode D5 are commonly grounded.

The first triode Q1 is an NPN triode, the second triode Q2 is a PNP triode, and the combined current amplification factor is equal to the product of the current amplification factors of the first triode Q1 and the second triode Q2.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A high-power driver is characterized by comprising a power supply management module, a signal input module, a control module and four output modules, wherein the power supply management module respectively supplies power for the control module, the signal input module and the output modules, the input end of the signal input module receives signals, the output end of the signal input module is connected with the input end of the control module, the output end of the control module is connected with the output modules,

the signal input module comprises a communication chip, wherein pins 6 of the communication chip are connected with the positive phase input of a signal, pins 7 of the communication chip are connected with the negative phase input of the signal, pins 2 and 3 of the communication chip output direction signals, pins 4 of the communication chip are a sending end, pin 1 of the communication chip is a receiving end,

the control module comprises a control chip, wherein pins 2 of the control chip are connected with pins 2 and 3 of the communication chip, pins 13, 14, 15 and 16 of the control chip are analog-digital conversion pins, pins 18, 19, 20 and 21 of the control chip are pulse width modulation pins,

2. The high power driver as claimed in claim 1, wherein pins 7 and 8 of the converting chip are connected to the cathode of the first diode, one end of the second capacitor and one end of the fifth capacitor respectively, the anode of the first diode is connected to one end of the fourth capacitor, the anode of the first diode is connected to the operating voltage, pins 1 and 2 of the converting chip are connected to one end of the inductor and the cathode of the second diode, the other end of the inductor is connected to one end of the sixth capacitor and one end of the third capacitor, pin 4 of the converting chip is connected to one end of the first resistor, the second resistor and one end of the first capacitor, the other end of the second resistor and the first capacitor is connected to the power supply anode, the other end of the first resistor is connected to ground, pin 5 of the converting chip is connected to one end of the third resistor, and the other end of the third resistor is connected to ground, the other ends of the pin 3, the fourth capacitor, the second capacitor, the fifth capacitor, the sixth capacitor and the third capacitor of the conversion chip and the anode of the second diode are grounded together.

3. The high power driver as claimed in claim 2, wherein the second diode is a schottky diode, the second capacitor and the third capacitor are polar capacitors, pins 7 and 8 of the conversion chip are connected to the anode of the second capacitor, and the other end of the inductor is connected to the anode of the third capacitor.

4. The high power driver as claimed in claim 3, wherein the power management module further includes a seventh capacitor, an eighth capacitor, a ninth capacitor and a tenth capacitor, the seventh capacitor and the eighth capacitor are polar capacitors, the input terminal of the voltage regulator is connected to the positive electrode of the seventh capacitor and one end of the ninth capacitor, and the output terminal of the voltage regulator is connected to the positive electrode of the eighth capacitor and one end of the tenth capacitor.

5. The high-power driver as claimed in claim 1, wherein pin 6 of the communication chip is connected to a fourth resistor, one end of a sixth resistor and a cathode of a third diode, pin 7 of the communication chip is connected to a fifth resistor, one end of a seventh resistor and a cathode of a fourth diode, the other end of the sixth resistor is connected to a power supply voltage, anodes of the third diode and the fourth diode are grounded, the other end of the seventh resistor is connected to one end of an eleventh capacitor, the other end of the eleventh capacitor is connected to pin 8 of the communication chip, pins 2 and 3 of the communication chip are connected to one end of an eighth resistor, and the other ends of the eighth resistor and the seventh resistor and one end of the eleventh capacitor are commonly grounded.

6. A high power driver according to claim 5, wherein said third and fourth diodes are rectifier diodes.

7. The high-power driver as claimed in claim 1, wherein pin 1 of the control chip is connected to one end of a twelfth capacitor, pin 5 of the control chip is connected to one end of a thirteenth capacitor, pin 6 of the control chip is connected to one end of a fourteenth capacitor, pin 6 of the control chip and one end of the fourteenth capacitor are connected to a power voltage together, and the other ends of the twelfth capacitor, the thirteenth capacitor and the fourteenth capacitor are connected to a ground together with pin 4 of the control chip.

8. A high power driver as claimed in claim 1, wherein the base of the first triode is connected to one end of a ninth resistor, the other end of the ninth resistor is connected to one end of a tenth resistor, the other end of the ninth resistor is connected to pins 18, 19, 20, 21 of the control chip, the collector of the first triode is connected to one ends of an eleventh resistor and a twelfth resistor, the other ends of the eleventh resistor and the twelfth resistor are connected to the emitter of the second triode, the emitter of the second triode is connected to the positive electrode of the power supply, the collector of the second triode is connected to one end of a thirteenth resistor, the negative electrode of a fifth diode and the gate of the fet, the source of the fet is connected to one ends of a fourteenth resistor and a fifteenth capacitor, and the other ends of the tenth resistor, the thirteenth resistor, the fourteenth resistor and the fifteenth capacitor, The emitter of the first triode and the anode of the fifth diode are commonly grounded.

9. A high power driver according to claim 8, wherein said fifth diode is a rectifier diode.