Flexible and Rugged Controller To Simplify Power For Smart Devices

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• ST’s new controller can be implemented in a variety of converter configurations
• Helps in reducing BOM and eases start up at low supply voltages; suitable for home appliances

STMicroelectronics has announced the release of the VIPer222, a controller for high-voltage converters up to 8W. It provides small size, low cost and versatility to applications such as home appliances, building-automation devices, smart lighting, and smart meters.

With integrated features including an error amplifier, current-sensing MOSFET and high-voltage startup circuitry, the VIPer222 can be used in a wide variety of popular converter topologies. These include non-isolated flyback converters, isolated flyback converters with primary-side regulation or secondary-side regulation using a photo-coupler, buck converters and buck-boost converters.

The VIPer222 comes with a 730V avalanche-rugged power stage for ensuring superior reliability. Short-circuit protection, thermal protection, pulse skipping protection, soft start and circuitry to manage burst-mode operation for enhanced efficiency at light load are also provided.

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Further features minimize external BoM and simplify converter design. These include a wide operating voltage (VCC) range of 4.5V-30V, which allows the device to be easily powered whatever the desired output voltage. The low startup voltage of 30V DC permits a wide input-voltage range and eases starting at low supply voltages. Light-load power consumption of less than 40mW simplifies meeting eco-design guidelines. The jittered PWM controller allows the use of small filter components.

The VIPer222 is in production now and available in 5mm x 4mm SSOP10.