STMicroelectronics 5 V / 0.36 A Buck Converter using VIPerPlus VIPer11 Buck Controller for VIPerPlus, VIPer11

STMicroelectronics provides turnkey solutions that address the growing demand for innovation to reach higher efficiency, higher power density and lower standby power designs. This is achieved through a wide range of power discrete components, analog ICs and digital processors.

The STEVAL-ISA95V1 evaluation board implements a wide range mains buck converter (5 V / 0.36 A) developed for general purpose applications. The design is built around the VIPer11 off-line high voltage converter from the VIPerPlus family, which intelligently integrates an 800 V rugged power MOSFET with a current-mode control PWM. The main characteristics of the evaluation board are its single layer, small size and minimal BoM, high efficiency and low standby consumption.

• Universal AC main input voltage range: 85 VAC to 265 VAC
• Output range: 5 V / 0.36 A
• Rated output power: 1.8 W
• Input power in standby at 230 VAC: less than 18 mW
• Active mode efficiency: > 65%