supremeOne

5W, 2-output wide-range buck converter based on VIPER26LD

STEVAL-ISA116V1

Overview

The STEVAL-ISA116V1 demonstration board implements a double-output power supply set in buck topology using the VIPER26LD, a new off-line high voltage converter by STMicroelectronics.

The features of the device include an 800 V avalanche-rugged power section, PWM operation at 60 kHz with frequency jittering for lower EMI, current limiting with adjustable set point, on-board soft-start, safe auto-restart after a fault condition and low standby power consumption.
The protection features include thermal shutdown with hysteresis, delayed overload protection and open loop failure protection. All protection is auto-restart mode.

Main features

Universal input mains range:
- input voltage: 80 - 280 V_AC
- frequency: 45 - 65 Hz
Double-output voltage:
- 16 V @ 0.3 A continuous operation
- 5 V through LDO
Standby mains consumption: AC
Fully protected against faults (overload, feedback disconnection and overheating)
EMI: according to EN55022-Class-B
RoHS compliant

Design Files

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Update:2025-06-05 22:51:51

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