Monolithic High-Voltage Power Conversion ICs Deliver 250W

Capable of delivering up to 250W, the TOPSwitch-GX family of monolithic off-line power supply switcher ICs integrate a high-voltage Power MOSFET, PWM control, fault protection, and other control circuitry onto a single CMOS chip. The family consists of 14 part types ranging in output power levels from 5W to 250W.
Built-in features include soft-start for minimum overshoot and lower component stresses at start-up, frequency jittering for low EMI, wider duty cycle for smaller input capacitor, zero load regulation capability, very high light load efficiency for low stand-by consumption, and hysteretic thermal shutdown for automatic fault recover. All critical parameters such as current limit and frequency are trimmed to a high level of accuracy for ease of design . Applications include laptop and cell phone adapters, and set-top boxes. Pricing starts at $1.34 each/5,000 for 15W TOP242P.