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.

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 Vac
On-board soft-start
Auto-restart after a fault condition
Feedback disconnection protection
Hysteretic thermal shutdown