SG2525 – SG3525 – PWM SMPS Regulator Chip

SG2525 – SG3525 – PWM SMPS Regulator Chip

A second generation ic switch mode controller optimized for high frequency.

Circuits i built using the STSG3525 using the SGS – Motion Control Application Manual are here –

SG3525 usage in SMPS 500W – It was used in Parallel for Electroplating with a central Load sharing control between modules.

100kHz Half Bridge Convertor – SG3525

The SG3525A pulse width modulator control circuit offers improved performance and lower external parts count when implemented for controlling all types of switching power supplies. The on-chip +5.1 V reference is trimmed to +/-1% and the error amplifier has an input common-mode voltage range that includes the reference voltage, thus eliminating the need for external divider resistors. Half Bridge, Push-Pull.

• 8.0 V to 35 V Operation
• 5.1 V +/- 1.0% Trimmed Reference
• 100 Hz to 400 kHz Oscillator Range
• Separate Oscillator Sync Pin
• Adjustable Deadtime Control
• Input Undervoltage Lockout
• Latching PWM to Prevent Multiple Pulses
• Pulse-by-Pulse Shutdown
• Dual Source/Sink Outputs: +/- 400 mA Peak

Circuits -

• 250 W S.M.P.S. with Power FETs +++
• Oh no! Not Another CFL Inverter . . .
• Switchmode Power Supply For Car Audio
• Switchmode Preamp Supply For Cars
• Motor Control Circuits Page 3
• High Power Servo +++
• Sam’s Schematic Collection
• 3 Amp PWM DC Motor Controller
• JOBO CPE2 Motor Speed Controller