STEVAL-VP26K01B: 15V @ 100mA, 90 ~ 600 VAC or 60 ~ 870 VDC in

Summary

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 VDC or 90 to 600 VAC. The highly compact design offers tight line and load regulation over the 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 meet the EMC standard requirements.

Ultra-wide range: 90–600 VAC or 60–870 VDC
Frequency: 50-60 Hz
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

Specifications

Manufacturer	STMicroelectronics
Category	AC/DC and DC/DC Conversion
Sub-Category	AC/DC SMPS - Single Output
Eval Board Part Number	497-19794-ND
Eval Board Supplier	STMicroelectronics
Eval Board	Normally In Stock
AC Voltage	Universal (115 / 230V) 600 V
Outputs and Type	1 Non-Isolated
Voltage Out	15 V
Current Out	100 mA
Output Power	1.5 W
Features	Current Limit (Adj. or Fixed) Frequency Jitter for EMI Open Circuit Protection Short Circuit Protection Soft Start Thermal Protection
Efficiency @ Conditions	- Not Given
No-load Input Power @ Voltage	<10 mW @ 230 V
Switching Frequency	60 kHz
Internal Switch	Yes
Component Count + Extras	25 + 2
Voltage In	60 ~ 870 VDC 90 ~ 600 VAC
Design Author	STMicroelectronics
Application / Target Market	Power: AC Adapters Power: Industrial Power
Main I.C. Base Part	VIPer26K
Date Created By Author	2019-07
Date Added To Library	2019-10