VIPER20A-E [STMicroelectronics]

The VIPer20A-E is a primary-side integrated circuit using VIPower M0 Technology, combining a PWM controller and a high-voltage Vertical Power MOSFET (700V/0.5A) on a single chip. It supports offline power supplies with secondary power capability of 10W in wide range and 20W in single range or doubler configuration. Compatible with both primary and secondary regulation loops, it reduces component count by about 50% compared to discrete solutions. Features include adjustable switching frequency up to 200 kHz, current mode control, soft start, shutdown control, automatic burst mode for stand-by, internally trimmed zener reference, undervoltage lock-out, integrated start-up supply, over-temperature protection, low stand-by current, and adjustable current limitation.