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12V, 140mA, 30kHz non-isolated buck topology regulator based on VIPer06XN

STEVAL-ISA130V1

Overview

The STEVAL-ISA130V1 demonstration board implements a non-isolated buck topology regulator using the VIPer06, which supplies a 12 V output at up to 140 mA with an operating frequency of 30 kHz.

The output voltage of this power supply can be easily set by changing the value of one resistor.
The circuit can be powered by either 85 V to 265 V AC or 100 V to 375 V DC.

Main features

800 V avalanche-rugged power section
PWM operation current mode controller
Limiting current with adjustable set point
Fixed frequency with jitter for EMI improvement
Operating frequency: 30 kHz
Input voltage range: 85 V to 265 V AC or 100 V to 375 V DC
Low power application without auxiliary winding

No load consumption below 30 mW @ 265 V_ac
On-board soft-start
Auto-restart after a fault condition
Feedback disconnection protection
Hysteretic thermal shutdown
RoHS compliant

Design Files

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Update:2025-05-07 22:24:39

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