Green Mode Fairchild Power Switch - Fairchild Semiconductor
Description
FSCQ-Series — Green Mode Fairchild Power Switch (FPS™)
January 2014
FSCQ-Series:
FSCQ0565RT / FSCQ0765RT / FSCQ0965RT / FSCQ1265RT / FSCQ1565RT
Green Mode Fairchild Power Switch (FPS™)
Features
Optimized for Quasi-Resonant Converter (QRC) Advanced Burst-Mode Operation for under 1 W
Standby Power Consumption
Pulse-by-Pulse Current Limit Overload Protection (OLP) – Auto Restart Over-Voltage Protection (OVP) – Auto Restart Abnormal Over-Current Protection (AOCP) – Latch Internal Thermal Shutdown (TSD) – Latch Under-Voltage Lockout (UVLO) with Hysteresis Low Startup Current (Typical: 25 μA) Internal High Voltage SenseFET Built-in Soft-Start (20 ms) Extended Quasi-Resonant Switching
Applications
CTV Audio Amplifier
Description
A Quasi-Resonant Converter (QRC) typically shows lower EMI and higher power conversion efficiency compared to a conventional hard-switched converter with a fixed switching frequency.
Therefore, a QRC is well suited for noise-sensitive applications, such as color TV and audio.
Each product in the FSCQ series contains an integrated Pulse Width Modulation (PWM) controller and a SenseFET.
This series is specifically designed for quasi-resonant off-line Switch Mode Power Supplies (SMPS) with minimal external components.
The PWM controller includes an integrated fixed frequency oscillator, under-voltage lockout, leadingedge blanking (LEB), optimized gate driver, internal softstart, temperature-compensated precise current sources for loop compensation, and self-protection circuitry.
Compared with a discrete MOSFET and PWM controller solution, the FSCQ series can reduce total cost, component count, size, and weight; while increasing efficiency, productivity, and system reliability.
These devices provide a basic platform for cost-effective designs of quasi-resonant switching flyback converters.
Related Resources
AN-4146 — Design Guidelines for Quasi-Resonant Converters Using FSCQ-Series Fairchild Power Switch AN-4140 — T...
Similar Datasheet
