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.

The VIPER26 integrated HV startup, sense-FET, error amplifier, and oscillator with jitter allow complete application designs with a minimum number of components.

Product 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), the feedback loop disconnection

Application:

• Auxiliary power supply for appliances

• Power metering

• LED drivers

• SMPS for s
et-top boxes, DVD players, and recorders