Микросхемы и комплектующие STEVAL-VP26K01B

REFERENCE DESIGN BOARD , BUCK CONVERTER

15V / 100mA high voltage buck converter reference design based on VIPER26K. This reference design implements a 15V-1.5W buck converter for ultra-wide input voltage range auxiliary power supplies from 60 to 870VDC or 90 to 600VAC. The board represents a very low cost buck solution based on the new VIPER265KDTR offline high voltage converter from the VIPerPlus family with 1050V power MOSFET and PWM current mode control. It allows direct connection to ultra-wide range mains without the need for input voltage limiter and/or stacked MOSFETs, therefore ensuring a minimal BOM. The VIPER265KDTR operates at 60KHz fixed frequency with frequency jittering to meet the EMC standard requirements.

• Frequency range from 50Hz to 60Hz
• Very compact size
• Tight line and load regulation over the entire input and output range
• Meets IEC55022 class B conducted EMI even with a reduced EMI filter due to the frequency jittering