SG3525 + LM358 PWM Inverter Driver Board — 12V–24V, Adjustable Frequency & Duty Cycle

SG3525 + LM358 PWM Inverter Driver Board 12V–24V, Adjustable Frequency & Duty Cycle

$7.12 USD

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SG3525 + LM358 PWM Inverter Driver Board — 12V–24V

This SG3525 + LM358 PWM driver board provides a complete push-pull PWM drive stage for building DC-AC inverters and switched-mode power supplies. The SG3525 PWM controller IC generates complementary push-pull gate drive signals with adjustable frequency and dead-time, while the LM358 op-amp provides feedback and protection functions. Operates from 12V to 24V DC input.

Key Specifications

Parameter	Value
PWM Controller IC	SG3525
Op-Amp IC	LM358
Input Voltage	12V – 24V DC
Output	Complementary push-pull PWM (for MOSFET/IGBT gate drive)
Frequency Range	Adjustable (via onboard trimmer)
Duty Cycle	Adjustable (via onboard trimmer)
Dead-Time Control	Yes (SG3525 built-in)
Origin	Mainland China

Why Choose This Driver Board?

SG3525 push-pull output — complementary gate signals for full-bridge and push-pull topologies
Adjustable frequency — tune switching frequency for your transformer and MOSFET/IGBT selection
Built-in dead-time — prevents shoot-through in bridge topologies
LM358 feedback — output voltage regulation and protection functions
12-24V input — compatible with 12V car battery, 24V battery bank, and solar systems

Typical Applications

DIY DC-AC inverter — drive push-pull or full-bridge MOSFET/IGBT stage for 12V/24V to AC conversion
Switched-mode power supply — push-pull converter control stage
High-frequency transformer driver — drive ferrite core transformer for voltage step-up
Power electronics education — learn SG3525 PWM control and push-pull topology
Battery-powered inverter — 12V car battery to 220V AC for portable power

FAQ

Q: Does this board include the power MOSFETs or IGBTs?
A: No. This is the PWM driver/control board only. You need to add external MOSFETs (e.g., IRF3205) or IGBTs and a high-frequency transformer for a complete inverter.

Q: What frequency range does SG3525 support?
A: The SG3525 oscillator frequency is set by external R and C components. Typical range is 100Hz to 500kHz. The onboard trimmer adjusts within the designed range.

Q: Can this board drive IGBTs directly?
A: The SG3525 output current is limited (~100mA peak). For IGBTs with large gate charge, add a gate driver buffer (e.g., TC4420, UCC27321) between the SG3525 output and IGBT gate.