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STMicroelectronics Expands Its VIPerPlus Power Family

STMicroelectronics has extended the VIPerPlus Power Family with highly integrated offline convertor. The latest addition to the VIPerPlus series, the VIPer31 compact high-voltage converter IC from STMicroelectronics enables robust power-converter solutions that deliver excellent reliability and meet energy-saving eco-design norms while saving bill-of-materials (BoM) costs.

STVIPer31 is optimized for commonly used offline AC/DC converter topologies, including isolated and non-isolated fly back, buck, and buck-boost converters. The compact, highly integrated IC requires minimal external components, enabling cost-effective designs to be created using a small-size and low-cost PCB.

Combining high conversion efficiency with no-load power consumption below 20 mW with a 230 V AC input, the VIPer31 is suitable for switched-mode power supplies (SMPS) for large or small home appliances, air conditioning, smart-home, or -building automation, lighting, metering, and motor-control applications.

The IC embeds a jittered PWM controller with 30 kHz, 60 kHz, and 132 kHz options, along with an 800 V avalanche-rugged MOSFET power section, high-voltage start-up circuit, sense FET, error amplifier for direct feedback, internal supply without auxiliary winding, and features a clamp-less design.

A wide Vcc supply-voltage range of 4.5 V to 30 V simplifies powering the VIPer31. Also, the 24 V DC drain start-up voltage saves further external circuitry and allows an ultra-wide AC input-voltage range, which enhances flexibility in both consumer and industrial applications.

Over-voltage and under-voltage protection, soft start, short-circuit protection, pulse-skipping protection, and thermal shutdown are also built-in.


Aishwarya Saxena

A book geek, with creative mind, an electronics degree, and zealous for writing.Creativity is the one thing in her opinion which drove her to enter into editing field. Allured towards south Indian cuisine and culture, love to discover new cultures and their customs. Relishes in discovering new music genres.

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