STEVAL-VP26K01B STMicroelectronics

STEVAL-VP26K01B Data brief 15 V / 100 mA high voltage buck converter reference design based on VIPER26K Features Ultra-wide range: 90600 V or 60870 V AC DC Frequency: 50-60 Hz Output voltage: 15 V Output current: 100 mA 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, thanks to the frequency jittering feature RoHS compliant Description The STEVAL-VP26K01B reference design implements a 15 V-1.5 W buck converter for ultra-wide input voltage range auxiliary power supplies from 60 to 870 V or 90 DC to 600 V . The highly compact design offers tight line and load regulation over the AC entire input and output range. The board represents a very low cost buck solution based on the new VIPER265KDTR offline high-voltage converter from the VIPerPlus family with 1050 V Power MOSFET and PWM current-mode control. It allows direct connection to ultra- wide range mains without the need for input an voltage limiter and/or stacked MOSFETs, therefore ensuring a minimal BOM. The VIPER265KDTR operates at 60 kHz fixed frequency with frequency jittering to Product summary meet the EMC standard requirements. 15 V / 100 mA high voltage buck STEVAL- converter based on VP26K01B VIPer265KD 1050 V high voltage VIPER265KDTR converter 1000 V, 1 A ultrafast STTH110 diode low capacitance small signal Schottky BAT41 diodes VIPerPlus series high voltage VIPerPlus converters Applications Buck converter DB3980 - Rev 1 - July 2019 www.st.com For further information contact your local STMicroelectronics sales office.STEVAL-VP26K01B Features and specifications 1 Features and specifications Figure 1. STEVAL-VP26K01B line-load regulation 20 18 16 V V OUT 870 VDC 14 60 VDC 12 10 0 10 20 30 40 50 60 70 80 90 100 I mA OUT RELATED LINKS Please visit the VIPerPlus page on the ST website for more information on this series of high-voltage converters DB3980 - Rev 1 page 2/5