About Us > Newsroom > All news > STMicroelectronics Extends VIPerPlus Power Family with Highly Integrated Offline Converter

Language Versions

STMicroelectronics Extends VIPerPlus Power Family with Highly Integrated Offline Converter

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.

VIPer31 is optimized for commonly used offline AC/DC converter topologies, including isolated and non-isolated flyback, 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 20mW with a 230VAC 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 30kHz, 60kHz, and 132kHz options, along with an 800V 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.gazzetta

A wide Vcc supply-voltage range of 4.5V to 30V simplifies powering the VIPer31. In addition, the 24VDC 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.

The VIPer31 is in production now, housed in a cost-effective SO16N package and priced from $0.46 for orders of 1000 pieces.

For more information please go to

You can also read our blogpost at

Language Versions

Change language