STEVAL-ISA175V1 Datasheet, PDF (1/5 Pages) STMicroelectronics – Meets STCOMET smart meter and power

STEVAL-ISA175V1
9.4 W, 15 V-5 V-3.3 V, three output isolated flyback converter for
smart meter and power line systems using the VIPER26HD
Data brief
Features
 Triple output voltage: 15 V @ 0.55 Arms (0.7
A peak), 3.3 V @ 200 mA and 5 V @ 100
mA
 Extended AC mains input voltage range: 90
VAC to 440 VAC
 Meets STCOMET smart meter and power
line communication system specs
 EMC with EN55022, EN61000, EN61000-4-
4, EN61000-4-5, EN61000-4-6
 RoHS compliant
Description
The STEVAL-ISA175V1 evaluation board
implements a three output isolated flyback
specifically designed to supply the STCOMET
smart meter and powerline communication
system.
The board is developed using the VIPER26HD
offline high-voltage converter by
STMicroelectronics. The device features an
800 V avalanche-rugged power section, PWM
operation at 115 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.
The power supply provides 15 V @ 550 mArms
(700 mA peak) to the power line modem (PLM)
and the analog circuitry, a post-regulated 5 V @
100 mA and a 3.3 V @ 200 mA supply through a
dedicated DC-DC converter connected on the 15
V rail for digital circuitry and other low voltage
parts.
The power supply is designed to operate across
an extended 90 to 440 VAC mains input voltage
range to also be used with a phase-to-phase
connection in a three-phase network.
The board can be used in a stand-alone
configuration or with the dedicated STCOMET
development kit and the PCB layout is
specifically designed to fit inside a real meter.
April 2016
DocID029273 Rev 1
For further information contact your local STMicroelectronics sales
office
1/5
www.st.com