STMicroelectronics VIPer26K

The device is a high voltage converter smartly integrating a 1050 V avalanche-rugged power section, with a PWM current mode control. The 1050 V-BV power MOSFET allows to extend input voltage range, and reduce the size of the DRAIN snubber circuit. This IC meets the most stringent energy-saving standards as it has very low consumption and operates in burst mode under light load.

The integrated HV startup, sense-FET, error amplifier and oscillator with jitter allow a complete application to be designed with the minimum number of components.
The VIPer26K supports the most common SMPS topologies such as: isolated flyback with optocoupler, primary-side regulation, non-isolated flyback with resistive feedback, buck, and buck boost.

Key features

• 1050 V avalanche-rugged power MOSFET allowing ultra-wide VAC input range to be covered
• Embedded HV startup and sense-FET
• Current mode PWM controller
• Drain current limit protection:
  • -500 mA (VIPER265K)
  • -700 mA (VIPER267K)
• Jittered switching frequency reduces the EMI filter cost: 60 kHz ± 4kHz
• Standby power < 30 mW at 230 VAC
• Embedded E/A with 3.3 V reference
• Safe auto-restart after a fault condition
• Hysteretic thermal shutdown
• Built-in soft-start for improved system reliability

Applications

• SMPS for energy metering
• Auxiliary power supplies for 3-phase input industrial systems
• LED lighting
• Air conditioning

Evaluation tools

	Part number	Description
	STEVAL-VP26K01B	15 V / 100 mA high voltage buck converter reference design based on VIPER26K
	STEVAL-VP26K01F	Three output isolated flyback converter for STCOMET smart meter and PLC system using VIPER267KDTR
	STEVAL-VP26K02F	Two output isolated SSR flyback converter for smart meter and PLC systems using VIPER267KDTR
	STEVAL-VP26K03F	Double output isolated PSR flyback converter for smart meter and PLC systems using VIPER267KDTR

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