VIPER26LD Description

The VIPER26LD is a smart high voltage converter that integrates an 800 V avalanche-rugged power MOSFET with PWM current mode control. The VIPER26LD 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 VIPER26LD IC meets the most stringent energy-saving standards with very low consumption and burst mode operation under light load.

VIPER26LD Features

800 V avalanche rugged power MOSFET allows a wide range of VAC input range to be covered

Embedded HV startup and sense-FET

The 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

VIPER26LD Applications

Auxiliary power supply for appliances

Power metering

LED drivers

SMPS for set-top boxes, DVD players, and recorders