This product is an offline high-voltage converter with an 800 V rugged power section, PWM control, two levels of overcurrent protection, overvoltage and overload protection, hysteretic thermal protection, soft-start and safe auto-restart after any fault condition removal.
The VIPER28 is an off‑line high‑voltage converter featuring an 800 V avalanche‑rugged power section, PWM operation with frequency jittering for low EMI, and a standby power consumption of less than 50 mW at 265 Vac. It includes adjustable over‑voltage protection, soft‑start, safe auto‑restart, hysteretic thermal shutdown, and delayed overload protection.
Typical applications include auxiliary power supplies for consumer and home equipment, ATX auxiliary supplies, and SMPS for set‑top boxes, DVD players, and other white‑goods. The document details pin functions, electrical ratings, thermal data, and typical circuit examples.
| Avalanche rugged power section voltage | 800 V |
|---|---|
| Standby power | < 50 mW at 265 Vac |
| Operating frequency (L type) | 60 kHz |
| Operating frequency (H type) | 115 kHz |
| Drain‑to‑source voltage | 800 V |
| Pulse drain current | 3 A |
| Power dissipation (Ta < 50 °C) | 1 W |
The standby power is less than 50 mW when operating at 265 Vac.
The L type operates at 60 kHz and the H type at 115 kHz.
The device can withstand up to 800 V between drain and source.
It provides over‑voltage, over‑current, overload, hysteretic thermal shutdown, soft‑start, and safe auto‑restart protections.