Description

The FSFR-HS is a highly integrated power switch designed for high-efficiency half-bridge resonant converters. Offering everything necessary to build a reliable and robust resonant converter, the FSFR-HS simplifies designs while improving productivity and performance. The FSFR-HS combines power MOSFETs, a high-side gate-drive circuit, an accurate current controlled oscillator, and built-in protection functions.

Features

■ Variable Frequency Control with 50 Duty Cycle for Half-Bridge Resonant Converter Topology

■ High Efficiency through Zero Voltage Switching (ZVS)

■ Built-in High-Side Gate Driver IC

■ Internal UniFET™s with Fast-Recovery Type Body Diode (trr=160ns Typical)

■ Fixed Dead Time (350ns) Optimized for MOSFETs

■ Operating Frequency Up to 600kHz for Soft-Start

■ Self Auto-Restart Operation for All Protections, Despite External LVCC Bias

■ Line UVLO with Programmable Hysteresis Level

■ Simple On/Off with Line UVLO Pin

■ Easy Configuration and Compatibility with FAN7930 for Line UVLO without External Components

■ Protection Functions: Over-Voltage Protection (OVP), Over-Current Protection (OCP), Abnormal Over Current Protection (AOCP), Internal Thermal Shutdown (TSD)

Applications

■ PDP and LCD TVs

■ Desktop PCs and Servers

■ Adapters

■ Telecom Power Supplies