VIPer20B/SP is a high voltage power management IC from STMicroelectronics. It integrates a PWM circuit and a high voltage MOSFET, and can achieve a switching frequency of up to 200kHz. It also has current mode control, soft start, shutdown control, automatic energy saving mode and other functions.
This document describes the VIPer20B/SP integrated PWM controller with a rugged 400 V 1.3 A vertical power MOSFET. It includes a block diagram, pin descriptions, and detailed electrical characteristics such as voltage ratings, current limits, and thermal data. The datasheet also presents typical application schematics for offline power supplies, including feedback and optocoupler configurations.
Key features highlighted are adjustable switching frequency up to 200 kHz, soft‑start and shutdown control, automatic burst‑mode operation, internally trimmed Zener reference, undervoltage lock‑out with hysteresis, integrated start‑up supply, over‑temperature protection, low standby current, and adjustable current limitation.
| Maximum Drain Current | 1.3 A |
|---|---|
| Adjustable Switching Frequency | Up to 200 kHz |
| Junction Temperature Range | -40 °C to 140 °C |
| Supply Voltage (VDD) | 0 V to 15 V |
When the COMP voltage drops below 0.5 V, the circuit shuts down, providing a zero‑duty‑cycle burst‑mode operation.