STMicroelectronics VIPER25 Manuals

Key facts

Brand: STMicroelectronics
Model: VIPER25
Category: AC-DC Switching Power Supply
Documents: 2
Languages: EN
Last added: 2012-08-10

Start here

STMicroelectronics VIPER25 Off-line High Voltage Converter Datasheet

Datasheet 40 pages · 1.7 MB · EN

The VIPER25 is an off-line high voltage converter with an 800 V avalanche rugged power section, PWM control, double levels of overcurrent protection, overvoltage and overload protections, hysteretic thermal protection, soft-start and safe auto-restart after fault removal. It includes quasi-resonant control for valley switching, burst-mode operation, brown-out and brown-in protection, and an embedded high voltage start-up circuit.

The document covers the block diagram, typical power, pin settings, electrical data, typical electrical characteristics, typical circuits, operation description and package mechanical data. The VIPER25 is offered in DIP-7 and SO16 narrow packages, with typical power ratings of 18 W or 20 W at 230 VAC and 10 W or 12 W at 85-265 VAC depending on adapter or open-frame use.

Read online

STMicroelectronics VIPER25 specifications

Maximum drain-source voltage	800 V
Standby power	< 50 mW at 265 Vac
Drain-source on-state resistance	7 Ω typ at TJ = 25 °C; 14 Ω typ at TJ = 125 °C
Maximum drain current limitation	0.7 A typ
Internal frequency limit	136 kHz typ (VIPER25L); 225 kHz typ (VIPER25H)
Thermal shutdown temperature	150 to 160 °C
Operating junction temperature range	-40 to 150 °C