Description

The highly integrated FSBH-series consists of an integrated current-mode Pulse Width Modulator (PWM) and an avalanche-rugged 700V SenseFET. It is specifically designed for high-performance offline Switch Mode Power Supplies (SMPS) with minimal external components.

Features

ƒ Brownout Protection with Hysteresis

ƒ Built-In 5ms Soft-Start Function

ƒ Internal Avalanche-Rugged 700V SenseFET

ƒ No Acoustic Noise During Light-Load Operation

ƒ High-Voltage Startup

ƒ Linearly Decreasing PWM Frequency to 18KHz

ƒ Peak-Current-Mode Control

ƒ Cycle-by-Cycle Current Limiting

ƒ Leading-Edge Blanking (LEB)

ƒ Synchronized Slope Compensation

ƒ Internal Open-Loop Protection

ƒ VDDUnder-Voltage Lockout (UVLO)

ƒ VDDOver-Voltage Protection (OVP)

ƒ Internal Auto-RestartCircuit (OVP, OTP)

ƒ Constant Power Limit (Full AC Input Range)

ƒ Internal OTP Sensor with Hysteresis

ƒ VIN Pin for Pull-HIGH Latch Function and Pull LOW Auto-Recovery Protection

Applications

General-purpose switch-mode power supplies and flyback power converters, including:

ƒ Auxiliary Power Supply for PC and Server

ƒ SMPS for VCR, SVR, STB, DVD & DVCD Player, Printer, Facsimile, and Scanner

ƒ Adapter for Camcorder