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