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.
VIPer31 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.
