AC-DC Integrated Power Stage Offering Expanded

The CoolSET™ F3 series from Infineon Technologies AG has been expanded to include the Fixed Frequency CoolSET™ and the Quasi Resonant CoolSET™. With these new additions, the CoolSET series continues to deliver design agility and miniaturization. F3 series combines a new feature-packed controller with the power of CoolMOS™ to provide the needed output power.

The additional features include an active burst mode operation during low power consumption, adjustable blanking window to facilitate load jumps and high-voltage startup cells that allows designers to quickly power up the controller from the rectified line. The new Fixed Frequency CoolSET enables efficient and easier SMPS design with low standby market demands and continues to raise the bar in the design of switched mode power supplies (SMPS).

Designers are challenged to reduce both foot print and weight to enhance operational flexibility and user mobility. Next generation power supplies need to optimize efficiency and reliability by keeping standby power consumption and EMI levels to a minimum. CoolSET integrated ac-dc power stages help engineers achieve those design goals and more.

Features of the Fixed Frequency CoolSET include: Lowest standby power consumption <300mW at no load condition; Lowest on-resistance for record efficiency levels; 650V or 800V avalanche rugged CoolMOS power MOSFET is integrated optionally; 100kHz or 67kHz fixed switching frequency; Auto-restart protection for overload, open loop, overvoltage and thermal shut down; User defined soft start; Improved modulated gate drive for lower EMI; and package options of DIP-7, DIP-8, SO-16/12, and TO-220 6pin (Isodrain).

The new Quasi Resonant CoolSET QR series continues to deliver design agility and miniaturization. built upon the successful F3 CoolSET platform, this new series offer the possibility of higher efficiency and better EMI performance. The digital frequency reduction feature score a very stable operation with decreasing load change, and the fold-back correction keep the maximum power limits within tolerance desired by SMPS designers. The active burst mode operation during low power consumption, remains market leaders in providing best-in-class power consumption during standby.

The CoolSET QR provide the option as a solution for efficiency oriented SMPS industry. Main features include: Integrated power IC; 650V /800V avalanche rugged CoolMOS; 650V /800V startup cell; Digital frequency reduction with decreasing load; Cycle-by-cycle current limitation with fold-back correction; Built-in digital soft-start; Active Burst Mode for lowest standby power <50mW; Latch-off mode for short-winding and output voltage; Enhanced integrated protection functions; and Modulated gate drive.