SG3525 Inverter Driver Board | Adjustable PWM High-Frequency Control Module

SG3525 Inverter Driver Board – Adjustable PWM High-Frequency Module

This SG3525-based inverter driver board provides a reliable and adjustable PWM control solution for high-frequency inverters, SSTCs, induction heaters, and DC-AC conversion systems. Designed with flexibility in mind, it includes dual MOSFET driver outputs, onboard frequency adjustment, and robust overcurrent protection options.

Applications

• High-frequency inverter and induction heater projects
• DIY SSTC (Solid-State Tesla Coil) drivers
• DC-AC conversion and PWM modulation experiments
• Resonant converter and power stage development

Highlights

• Core IC: SG3525A PWM controller
• Adjustable output frequency: 20 kHz – 250 kHz (typical)
• Dual MOSFET gate driver outputs with adjustable dead-time
• Supports IR2110, TC4420, or totem-pole driver stages
• Stable onboard oscillator with timing capacitor and variable resistor
• Compact PCB layout with high-current traces

Specifications

• Supply Voltage: 12 – 18 V DC
• Output Type: Push-pull / Half-bridge compatible
• Frequency Adjust Range: 20 – 250 kHz (RT/CT variable)
• Operating Temperature: −20 °C – +85 °C
• Board Dimensions: ~55 mm × 45 mm

Note: The included sample circuit diagram is for reference only. Components and wiring may vary based on application.

Ideal for DIY power-electronics experiments, inverter research, and high-frequency switching systems where precise control is required.