VIPer12A Low Power SMPS Primary Switcher IC SMD Package

The VIPer12A is an integrated off-line primary switcher IC designed for cost-effective and compact Switch Mode Power Supplies (SMPS). It combines a PWM controller and a 650V power MOSFET within a single monolithic chip, providing an efficient, reliable, and space-saving solution for low-power AC–DC converter designs.

Engineered by STMicroelectronics, the VIPer12A operates directly from rectified mains input and supports flyback, buck, or buck-boost topologies. It features constant-frequency PWM operation, current-mode control, and comprehensive protection features such as over-voltage, over-temperature, and over-current protection. Its auto-restart function ensures safe recovery from fault conditions without damaging the device or the load.

The VIPer12A is available in a compact SMD package (SO-8), making it ideal for applications where space, cost, and efficiency are critical.

• Integrated PWM controller and 650V MOSFET in one chip
• Current-mode control for stable and accurate regulation
• Fixed switching frequency for low EMI
• Overload, over-voltage, and thermal protection with auto-restart
• Low standby power consumption (<50mW)
• Soft-start function for controlled power-up
• Drain-source avalanche ruggedness for enhanced reliability
• Compact SO-8 SMD package for space-saving PCB designs
• Typical output power:
• Up to 12W @ 230VAC
• Up to 8W @ 85–265VAC universal input

Applications

• Low-power AC–DC converters
• Battery chargers and adapters
• Standby and auxiliary power supplies
• Appliance control modules
• Set-top boxes, home automation, and IoT devices
• Industrial control systems
• Consumer electronics and small SMPS circuits

VIPer12 Datasheet