FAN7631SJX

FAIRCHILD SEMICONDUCTOR  FAN7631SJX  芯片, 控制器, PFM, 最高600KHZ, 16SOP

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