FAN7631SJX Datasheet PDF - Fairchild

●Description

●The FAN7631 is a pulse-frequency modulation controller for high-efficiency half-bridge resonant converters that includes a high-side gate drive circuit, an accurate current-controlled oscillator, and various protection functions. The FAN7631 features include variable dead time, operating frequency up to 600kHz, protections such as LUVLO, and a selectable latch or A/R protection using the LS pin for user convenience.

●Features

●Variable Frequency Control with 50% Duty Cycle for Half-Bridge Resonant Converter Topologies

●High Efficiency with Zero-Voltage-Switching (ZVS)

●Up to 600kHz Operating Frequency

●Built-in High-Side Gate Driver

●High Gate-Driving Current: +500mA/-1000mA

●Programmable Dead Time with a Resistor

●Pulse Skipping and Burst Operation for Frequency Limit (Programmable) at Light-Load Condition

●Simple Remote On/Off Control with Latch or Auto-Restart (A/R) Using FI or LS Pin

●Protection Functions: Over-Voltage Protection (OVP), Overload Protection (OLP), Over-Current

●Protection (OCP), Abnormal Over-Current Protection (AOCP), Internal Thermal Shutdown (TSD), and High Precise Line Under-Voltage Lockout (LUVLO)

●Level-Change OCP Function During Startup

●Applications

●PDP and LCD TVs

●Desktop PCs and Servers

●Video Game Consoles

●Adapters

●Telecom Power Supplies