STMicroelectronics VIPER26H | Demoboard EVALKITST8500-1 / AN5120

Description

The VIPER26 device is a smart high voltage converter that integrates an 800 V avalanche-rugged power MOSFET with PWM current mode control. The power MOSFET with 800 V breakdown voltage allows an extended input voltage range to be applied, as well as the size of the DRAIN snubber circuit to be reduced.This IC meets the most stringent energy-saving standards with very low consumption and burst mode operation under light load.The design of flyback, buck and buck boost converters is supported. The integrated HV startup, sense-FET, error amplifier and oscillator with jitter allow complete application designs with a minimum number of components.

Features

• 800 V avalanche rugged power MOSFET allowing wide range VAC input range to be covered
• Embedded HV startup and sense-FET
• Current mode PWM controller
• Minimized system input power consumption:
• Less than 30 mW @ 230 VAC in no-load condition
• Less than 400 mW @ 230 VAC with 250 mW load
• Limiting current with adjustable set point
• Jittered switching frequency to reduce the EMI filter cost:
• 60 kHz ±4 kHz (L type)
• 115 kHz ±8 kHz (H type)
• Embedded error amplifier
• Hysteretic thermal shutdown
• Built-in soft-start for improved system reliability
• Protections with automatic restart: overload/short-circuit (OLP), feedback loop disconnection

Typical applications

• Home, building and city automation
• Connectivity

More information

• Datasheet
• IC product information