Data brief
For further information contact your local STMicroelectronics sales office.
November 2010 Doc ID 18241 Rev 1 1/4
4
STEVAL-IPB001V1
2 W, 3-phase SMPS for breaker applications
based on the STC04IE170HP ESBT
Features
■ Active startup network for improved efficiency
■ Input voltage: 150 to 1250 VDC
■ Output voltage: 24 V / 83 mA
■ Output power: 2 W
■ Switching frequency: 30 kHz
■ Dedicated transformer construction
■ Efficiency: > 80%
■ RoHS compliant
Description
The design implemented in the STEVAL-
IPB001V1 demonstration board represents a
complete solution for a 2 W single-output SMPS
(switched-mode power supply), which is widely
used to supply power in breaker applications.
The SMPS employs the UC3845B PWM driver,
and uses the STC04IE170HP ESBT as the main
switch.
This design can also be applied to power supplies
for 3-phase power metering applications, as it can
be easily upgraded for higher output power.
STEVAL-IPB001V1
www.st.com
