SG3525 IC Pinout, Inverter Circuit Diagram & PCB (Complete Guide 2026)

The SG3525 ic is a PWM producing ic. That could be available in all electronics shops with the cheapest price. The ic will cost you around 70 Rupees in the Indian market. check the SG3525 pinouts here. it a 16 pin package and the ic it having the automatic shutdown and soft start feature. The single chip can be also used in the power motor speed controller as PWM DC motor speed controller.

SG3525 IC Pinout Diagram

Pinout Configuration

• The pin 1 – inv input pin 9 – compensation
• The Pin 2 – Non inverting input pin 10 -shutdown
• The pin3 – sync pin 11 – output A
• The pin4 -oscillator output pin 12 – ground
• The pin5 – ct pin 13 – vc
• The pin6 – ct pin 14 – output b
• The pin7 – discharge pin 15 – Vcc
• The pin8 – soft start pin 16 – Vref

SG3525 Inverter Circuit Diagram

1500 Watt Inverter Driver Board Using SG3525

The driver board circuit and The PCB layout I am given in the youtube video. This Driver board is enough For the power inverter construction. probably the inverter can power up by increasing the number of MOSFETs. the best choice is P60N06 N channel MOSFETs.The P60n06 works with 60v and it will take the 60 amp.

Transformer Calculation for 1500 watt

As a result, the series of 1 mosfets will provide 120 Watts output. The working voltage is 24 v DC and one mosfet power is 120 watts so, we want 1500 watts output , at least 12 mosfet must be needed to get 1500 watts. Calculate how much ampere we need to supply from a 24 v battery?

Therefore, power = volt *ampere

Power/volt = ampere

1500/24 = approximately 63 ampere we need.

then we conclude that 63-ampere working Transformer we need for getting 1500 watts from the 24-volt transformer.

Download PCB Layout

• 1500 watt Inverter Driver PCB Layout