For that matter, the SG3525 is a PWM controller that is typically used to drive MOSFETs or BJTS. If you want to drive the IGBT module, you need to carry out some special design and consideration, mainly including the following aspects:
1. Choose the right IGBT module: It is necessary to choose the IGBT module that can withstand the output frequency and voltage of the PWM controller, while considering the IGBT drive circuit and protection circuit.
2. Design IGBT drive circuit: IGBT requires high voltage and high current drive signal to work normally, so it is necessary to design a suitable drive circuit, including level conversion, isolation, amplification and other functions. Commonly used drive circuits include single, double, three-way drive circuits, which can be selected according to actual needs.
3. Adjust PWM controller parameters: The output frequency and duty cycle of SG3525 need to be adjusted according to the characteristics of IGBT to ensure that IGBT can work normally. It usually takes some experimentation and testing to find the best PWM parameters.
4. Add protection circuit: In order to prevent IGBT from being damaged due to over-voltage and over-current, it is necessary to add protection circuit, including over-voltage protection, over-current protection, over-temperature protection and other functions. These protection circuits can be implemented by hardware circuits or software algorithms.
In short, the driving IGBT module needs some special design and consideration, and needs to be selected and adjusted according to the actual application scenario.
1, to use SG3525 to drive the IGBT module, it is necessary to connect the output port to the control port of the IGBT, and connect the capacitor and resistor matched with the IGBT to the circuit to control the on-off of the IGBT, so as to achieve the drive of the IGBT module.
2. In this way, the PWM function of SG3525 can be used to adjust the duty cycle of the output signal, so as to achieve accurate control and adjustment in the on-off control of the IGBT module.