CD-ROM driver

Abstract

The utility model discloses a CD-ROM driver, which is connected with a power device module, the power device module comprises at least one power device, the CD-ROM driver comprises a main control circuit and an optical transmitter driving circuit connected with the main control circuit, the main control circuit comprises a controller, the optical transmitter driving circuit comprises at least one optical transmitter driving unit, and the optical transmitter driving unit is connected with the controller. The controller is connected with the optical transmitter driving unit, and the optical transmitter driving unit is connected with the power device through an optical fiber. The CD-ROM driver is provided with the main control circuit comprising the controller and the optical transmitter driving circuit which is connected with the main control circuit and comprises at least one optical transmitter driving unit, and the optical transmitter driving unit is connected with the power device through the optical fiber. The controller outputs the modulation signal to the corresponding optical transmitter driving unit for processing to generate a corresponding optical signal, and the optical signal is transmitted to the corresponding power device through the optical fiber to drive the power device, so that the optical fiber driving function is achieved, the structure is simple, and the size is small.

Description

Technical Field

[0001] This utility model relates to the field of electronic device driving technology, and in particular to an optical drive driver. Background Technology

[0002] In current industrial applications, IGBT (Insulated Gate Bipolar Transistor) devices are widely used in high-power frequency converters due to their superior performance. Traditional portable IGBT drivers have complex circuit structures, are bulky, and are inconvenient to carry. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an optical drive driver to simplify the driver circuit structure, making the driver small in size and easy to carry.

[0004] To solve the above-mentioned technical problems, this utility model provides an optical drive driver connected to a power device module. The power device module includes at least one power device. The optical drive driver includes a main control circuit and an optical transmitter driving circuit connected to the main control circuit. The main control circuit includes a controller. The optical transmitter driving circuit includes at least one optical transmitter driving unit. The controller is connected to the optical transmitter driving unit. The optical transmitter driving unit is connected to the power device through an optical fiber.

[0005] The further technical solution is as follows: the optical transmitter driving circuit includes four optical transmitter driving units, the power device module includes four power devices, and the optical transmitter driving units correspond one-to-one with and are connected to the power devices.

[0006] The further technical solution is as follows: the driving port of the power device is connected to the corresponding optical transmitter driving unit, and the four power devices form an H-bridge circuit.

[0007] The further technical solution is as follows: the optical transmitter driving unit includes an optical transmitter, a connecting resistor, a first capacitor, a second capacitor, and a first inductor. The first end of the first capacitor, the first end of the first inductor, and the first end of the connecting resistor are all connected to the power supply voltage. The second end of the first capacitor is grounded. The second end of the first inductor is connected to the first port of the optical transmitter and the first end of the second capacitor, respectively. The second end of the second capacitor is grounded. The second and fourth ports of the optical transmitter and the second end of the connecting resistor are all connected to the PWM output port of the controller. The third port of the optical transmitter is grounded.

[0008] A further technical solution is as follows: the light transmitter includes a light-emitting diode, the anode of the light-emitting diode is connected to a first port of the light transmitter, and the cathode of the light-emitting diode is connected to a second port of the light transmitter.

[0009] The further technical solution is as follows: the controller has four PWM output ports, and each PWM output port of the controller corresponds to one of the optical transmitter drive units.

[0010] A further technical solution is as follows: the optical drive driver also includes a power supply circuit, which is connected to the main control circuit and the optical transmitter drive circuit respectively, so as to provide power supply voltage to the main control circuit and the optical transmitter drive circuit.

[0011] A further technical solution is as follows: the optical drive driver further includes a display circuit, the display circuit includes a display module, and the display module is connected to the controller.

[0012] A further technical solution is as follows: the optical drive driver further includes a button switch circuit, which is connected to the main control circuit to control the start and stop of the main control circuit. The button switch circuit includes a button switch.

[0013] The further technical solution is as follows: the controller is an STM32 series microcontroller.

[0014] The beneficial technical effects of this utility model are as follows: The optical drive driver of this utility model is connected to a power device module including at least one power device. The optical drive driver is equipped with a main control circuit including a controller and an optical transmitter drive circuit including at least one optical transmitter drive unit connected to the main control circuit. The optical transmitter drive unit is connected to the power device through an optical fiber. The controller outputs a modulation signal to the corresponding optical transmitter drive unit. The optical transmitter drive unit processes the modulation signal to generate a corresponding optical signal and transmits the corresponding signal to the corresponding power device through the optical fiber to drive the power device. It has an optical fiber drive function, and the circuit structure is simple, which can effectively reduce the overall investment cost of the driver. The overall size is small, easy to carry and operate, and can better adapt to various complex field environments. It is convenient for on-site maintenance, has strong practicality, and has broad application prospects. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the frame for a specific application of the optical drive driver provided by this utility model;

[0017] Figure 2Circuit diagram of the optical transmitter drive unit of the optical drive driver provided by this utility model;

[0018] Figure 3 A circuit diagram of a specific embodiment of the power device module driven by the optical drive driver provided by this utility model. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1 , Figure 1 This is a schematic diagram of the framework of the optical drive driver provided by this utility model in a specific application. The optical drive driver 10 is connected to the power device module 20. The power device module 20 includes at least one power device. The optical drive driver 10 includes a main control circuit 11 and an optical transmitter drive circuit 12 connected to the main control circuit 11. The main control circuit 11 includes a controller. The optical transmitter drive circuit 12 includes at least one optical transmitter drive unit. The controller is connected to the optical transmitter drive unit to generate and output an SPWM (Sinusoidal Pulse Width Modulation) drive signal to the optical transmitter drive unit. The optical transmitter drive unit is connected to the power device through an optical fiber to work according to the received SPWM drive signal, generate an optical signal, and output a corresponding signal to the corresponding power device through the optical fiber to drive the power device.

[0021] The optical drive driver 10 is connected to a power device module 20 including at least one power device. The optical drive driver 10 is equipped with a main control circuit 11 including a controller and an optical transmitter drive circuit 12 connected to the main control circuit 11, which includes at least one optical transmitter drive unit. The optical transmitter drive unit is connected to the power device through an optical fiber. The controller outputs a modulation signal to the corresponding optical transmitter drive unit. The optical transmitter drive unit processes the modulation signal to generate a corresponding optical signal and transmits the corresponding signal to the corresponding power device through the optical fiber to drive the power device. It has an optical fiber drive function, and the circuit structure is simple, which can effectively reduce the overall investment cost of the driver. The overall size is small, easy to carry and operate, and can better adapt to various complex field environments. It is convenient for on-site maintenance, has strong practicality, and has broad application prospects.

[0022] Specifically, the controller is an STM32 series microcontroller. Preferably, the controller may be an STM32G474VET6 microcontroller chip.

[0023] Specifically, the optical drive driver 10 further includes a power supply circuit 13, which is connected to both the main control circuit 11 and the optical transmitter driver circuit 12 to provide power supply voltage to them. The power supply circuit 13 may include a DC-DC chip for voltage conversion to obtain the required voltage. The power supply circuit 13 may employ a BUCK step-down circuit topology to step down the input voltage and output a stable power supply voltage to provide power support for subsequent circuits. The input voltage range can be 4.5V to 40V, and the power supply voltage can be 3.3V.

[0024] Specifically, the optical drive driver 10 further includes a display circuit 14, which includes a display module connected to the controller for data interaction and communication via the SPI (Serial Peripheral Interface) communication protocol. This display module displays the operating status information of the optical drive driver, such as the operating status of each optical transmitter driver circuit. The display module can also display parameters such as the pulse width modulation frequency, pulse width modulation duty cycle, period value, and comparison value of the SPWM drive signal output by the controller. The display module may have output buttons and buttons for human-machine interaction, allowing users to interact with the optical drive driver through the display module and control and adjust its functions. The display module may use a TFT (Thin Film Transistor) liquid crystal display. A power supply circuit 13 is connected to the display circuit 14 to supply power to the display circuit 14.

[0025] Specifically, the optical drive driver 10 further includes a push-button switch circuit 15, which is connected to the main control circuit 11 to control the start and stop of the main control circuit 11. The push-button switch circuit 15 includes push-button switches, including but not limited to tactile switches or five-way switches. The push-button switch circuit 15 is connected to the I / O pins of the controller so that the controller can obtain the status information of the push-button switches in the push-button switch circuit 15, and then perform overall start and stop control.

[0026] Combination Figure 2 , Figure 2This invention provides a circuit diagram of the optical transmitter driving unit of an optical drive driver. The optical transmitter driving unit includes an optical transmitter FT01, a connecting resistor R1, a first capacitor C1, a second capacitor C2, and a first inductor L1. The first terminals of the first capacitor C1, the first terminals of the first inductor L1, and the first terminal of the connecting resistor R1 are all connected to the power supply voltage VCC_D3V3. The second terminal of the first capacitor C1 is grounded. The second terminal of the first inductor L1 is connected to the first port of the optical transmitter FT01 and the first terminal of the second capacitor C2, respectively. The second terminal of the second capacitor C2 is grounded. The second and fourth ports of the optical transmitter FT01 and the second terminal of the connecting resistor R1 are all connected to the PWM output port CHA01 of the controller. The third port of the optical transmitter FT01 is grounded. The first capacitor C1, the second capacitor C2, and the first inductor L1 form a π-type filter to filter the power supply voltage VCC_D3V3 to ensure power supply stability. The connecting resistor R1 is connected to the power supply voltage VCC_D3V3 as a pull-up resistor. By configuring pull-up resistors and π-type filters, the anti-interference capability of the circuit can be effectively enhanced, and the possibility of false triggering of the drive can be significantly reduced, thereby ensuring the stable and reliable operation of the optical transmitter drive unit. Since the power supply circuit 13 outputs a supply voltage, the first terminal of the first capacitor C1, the first terminal of the first inductor L1, and the first terminal of the connecting resistor R1 in the optical transmitter drive unit are all connected to the output terminal of the power supply circuit 13.

[0027] The controller can activate its internal timer to start a counter. The counter's count value is compared with a comparison value and a period value to output a corresponding level to the PWM output port CHA01 according to the comparison result and preset rules. The preset rules can be: when the counter's count value is less than the comparison value, the controller's PWM output port CHA01 outputs a high level; when the counter's count value is greater than or equal to the comparison value, the controller's PWM output port CHA01 outputs a low level; when the counter's count value reaches the period value, the counter is reset. The frequency of the output PWM drive signal can be adjusted by changing the pre-saved period value, and the duty cycle of the output PWM drive signal can be controlled by changing the pre-saved comparison value, thereby precisely controlling the controller's output SPWM drive signal to meet various application scenarios.

[0028] Specifically, in some embodiments, the light transmitter FT01 includes a light-emitting diode (LED). The anode of the LED is connected to a first port of the light transmitter FT01, so that the anode of the LED is connected to the supply voltage VCC_D3V3 through the first inductor L1 via the first port of the light transmitter FT01. The cathode of the LED is connected to a second port of the light transmitter FT01, so that the cathode of the LED is connected to the PWM output port CHA01 of the controller via the second port of the light transmitter FT01.

[0029] Specifically, the controller has four PWM output ports CHA01, and each PWM output port CHA01 corresponds one-to-one with the optical transmitter driver unit. The controller has four PWM output ports CHA01, so that only four PWM output ports CHA01 are needed to meet the driving requirements.

[0030] Combination Figure 3 , Figure 3 The circuit diagram shows a specific embodiment of the power device module driven by the optical drive driver provided by this utility model. Specifically, the optical transmitter drive circuit 12 includes four optical transmitter drive units, and the power device module 20 includes four power devices. The optical transmitter drive units correspond one-to-one with the power devices and are connected to each other to precisely control the on / off state of each power device.

[0031] Preferably, the power devices include, but are not limited to, power devices such as IGBTs and MOSFETs.

[0032] Specifically, the drive port of the power device is connected to the corresponding optical transmitter drive unit, and the four power devices form an H-bridge circuit. For example... Figure 3As shown, the four power devices can be referred to as the first power device T1, the second power device T2, the third power device T3, and the fourth power device T4, respectively. The driving port of each power device is connected to the optical transmitter of the corresponding optical transmitter driving unit, and the optical transmitters are referred to as the first optical transmitter FT1, the second optical transmitter FT2, the third optical transmitter FT3, and the fourth optical transmitter FT4, respectively. The first power device T1 is connected in series with the second power device T2, and the third power device T3 is connected in series with the fourth power device T4. The first power device T1 and the second power device T2 connected in series are connected in parallel with the third power device T3 and the fourth power device T4 connected in series. The power device module 20 also includes a bus capacitor C10. The two ends of the bus capacitor C10 are connected to the positive terminal VBUS+ and the negative terminal VBUS- of the bus, respectively. The collectors of the first power device T1 and the third power device T3 are both connected to the positive terminal VBUS+ of the bus. The emitter of the first power device T1 is connected to the collector of the second power device T2, and the emitter of the third power device T3 is connected to the collector of the fourth power device T4. The emitters of the second power device T2 and the fourth power device T4 are both connected to the negative terminal VBUS- of the bus.

[0033] Preferably, the power device module further includes an output inductor L20 and an output capacitor C20 connected in series. The first end of the output inductor L20 is electrically connected to the series node between the first power device T1 and the second power device T2. The second end of the output inductor L20 is connected to the first end of the output capacitor C20. The second end of the output capacitor C20 is electrically connected to the series node between the third power device T3 and the fourth power device T4.

[0034] In summary, the optical drive driver of this utility model is connected to a power device module including at least one power device. The optical drive driver is configured with a main control circuit including a controller and an optical transmitter drive circuit including at least one optical transmitter drive unit connected to the main control circuit. The optical transmitter drive unit is connected to the power device through an optical fiber. The controller outputs a modulation signal to the corresponding optical transmitter drive unit. The optical transmitter drive unit processes the modulation signal to generate a corresponding optical signal and transmits it to the corresponding power device through the optical fiber to drive the power device. It has an optical fiber drive function, a simple circuit structure, and can effectively reduce the overall investment cost of the driver. It is compact in size, easy to carry and operate, can better adapt to various complex field environments, facilitates on-site maintenance, has strong practicality, and has broad application prospects.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An optical drive, characterized by The optical drive type driver is connected with a power device module, the power device module comprises at least one power device, the optical drive type driver comprises a master control circuit and an optical transmitter driving circuit connected with the master control circuit, the master control circuit comprises a controller, the optical transmitter driving circuit comprises at least one optical transmitter driving unit, the controller is connected with the optical transmitter driving unit, and the optical transmitter driving unit is connected with the power device through an optical fiber.

2. The optical drive of claim 1, wherein, The optical transmitter driving circuit comprises four optical transmitter driving units, the power device module comprises four power devices, and the optical transmitter driving units are connected with the power devices in one-to-one correspondence.

3. The optical drive of claim 2, wherein, The driving ports of the power devices are connected with the corresponding optical transmitter driving units, and the four power devices form an H-bridge circuit.

4. An optical drive as claimed in claim 1 or 2, characterized in that The optical transmitter driving unit comprises an optical transmitter, a connecting resistor, a first capacitor, a second capacitor and a first inductor, a first end of the first capacitor, a first end of the first inductor and a first end of the connecting resistor are connected with a power supply voltage, a second end of the first capacitor is grounded, a second end of the first inductor is connected with a first port of the optical transmitter and a first end of the second capacitor respectively, a second end of the second capacitor is grounded, a second port and a fourth port of the optical transmitter and a second end of the connecting resistor are connected with a PWM output port of the controller, and a third port of the optical transmitter is grounded.

5. The optical drive of claim 4, wherein, The optical transmitter comprises a light emitting diode, an anode of the light emitting diode is connected with the first port of the optical transmitter, and a cathode of the light emitting diode is connected with the second port of the optical transmitter.

6. The optical drive of claim 4, wherein, The number of the PWM output ports of the controller is four, and the PWM output ports of the controller correspond to the optical transmitter driving units in one-to-one correspondence.

7. The optical drive of claim 4, wherein, The optical drive type driver further comprises a power supply circuit, the power supply circuit is connected with the master control circuit and the optical transmitter driving circuit respectively, so as to provide a power supply voltage for the master control circuit and the optical transmitter driving circuit.

8. The optical drive of claim 1, wherein, The optical drive type driver further comprises a display circuit, the display circuit comprises a display screen module, and the display screen module is connected with the controller.

9. The optical drive of claim 1, wherein, The optical drive type driver further comprises a key switch circuit, the key switch circuit is connected with the master control circuit, so as to control the start and stop of the working of the master control circuit, and the key switch circuit comprises a key switch.

10. The optical drive of claim 1, wherein, The controller is an STM32 series microcontroller.

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