Description

The highly integrated FSL127H consists of a 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

Built-in 5ms Soft-Start Function

Internal Avalanche-Rugged 700V SenseFET

Low Audio Noise

High-Voltage Startup

Fixed PWM Frequency at 100KHz

Linearly Decreasing PWM Frequency to 18KHz

Peak-Current-Mode Control

Cycle-by-Cycle Current Limiting

Leading-Edge Blanking (LEB)

Synchronized Slope Compensation

Internal Open-Loop Protection (OLP)

VDDUnder-Voltage Lockout (UVLO)

VDDOver-Voltage Protection (OVP)

Constant Power Limit (Full AC Input Range)

Internal OTP Sensor with Hysteresis

Applications

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

SMPS for VCR, SVR, STB, DVD & VCD Player, Printer, Facsimile, & Scanner

Adapter for Camcorder