Description

The primary-side PWM integrated Power MOSFET, FSEZ1216, significantly simplifies power supply design that requires CV and CC regulation capabilities. FSEZ1216 controls the output voltage and current precisely only with the information in the primary side of the power supply, not only removing the output current sensing loss, but also eliminating all secondary feedback circuitry.

Features

■ Constant-Voltage (CV) and Constant-Current (CC) Control without Secondary-Feedback Circuitry

■ Green Mode: Frequency Reduction at Light-Load

■ Fixed PWM Frequency at 42kHz with Frequency Hopping to Reduce EMI

■ Cable Voltage Drop Compensation in CV Mode

■ Low Startup Current: 10μA

■ Low Operating Current: 3.5mA

■ Peak-Current-Mode Control in CV Mode

■ Cycle-by-Cycle Current Limiting

■ VDD Over-Voltage Protection with Auto-Restart

■ VDD Under-Voltage Lockout (UVLO)

■ Gate Output Maximum Voltage Clamped at 18V

■ Fixed Over-Temperature Protection with Latch

■ DIP-8 Package Available

Applications

■ Battery Chargers for Cellular Phones, Cordless Phones, PDA, Digital Cameras, Power Tools

■ Replaces Linear Transformer and RCC SMPS

■ Offline High Brightness (HB) LED Drivers