Power chip

High Performance Current Mode PWM Controller

The FSQ0370 consists of an integrated current-mode pulse-width modem (PWM) and an avalanche-tolerant 700V SenseFET device. It is designed for high-performance off-line Switch Mode Power Supplies (SMPS) with minimal external components. Integrated PWM controller features include: fixed frequency generator oscillator, undervoltage lockout (UVLO) protection, leading edge blanking (LEB), optimized gate on/off driver, thermal shutdown (TSD) protection and Temperature compensated precision current source for loop compensation and fault protection circuits. Compared to discrete MOSFET and controller or RCC switching converter solutions, the FSQ0370 reduces overall component count, design size and weight; while improving efficiency, productivity and system reliability. These devices provide an optimal base platform for cost-effective flyback converter designs such as PC auxiliary power supplies.