Data brief
For further information contact your local STMicroelectronics sales office.
November 2009 Doc ID 16769 Rev 1 1/4
4
STEVAL-ISF001V1
3 kW fixed off-time PFC
based on the L6563 and STW55NM60N
Features
■ Single range input voltage from 185 V to 265 V,
50/60 Hz
■ Output voltage: 400 V ±5%
■ Inductor saturation protection
■ Optimized EMC input filter (in accordance with
EN55014 and EN55022)
■ Power factor > 0.98
■ Efficiency > 95%
■ THD (total harmonic distortion) below 10%
starting from 1 kW
■ RoHS compliant
Description
The STEVAL-ISF001V1 demonstration board
provides a compact and ready-to-use solution for
the implementation of a simple PFC (power factor
correction) system capable of supplying loads
with a power close to the maximum delivered in
most typical domestic applications.
For this power range, the use of continuous mode
PFC operation becomes mandatory in order to
drain a current with an RMS value not exceeding
the maximum allowed by the metering system,
and to minimize the size of components involved
in system operation.
Normally, the use of a standard continuous mode
driver chip requires a more expensive and
complex driver, as well as associated passive
components. However, STMicroelectronics’
patented solution allows the use of a simple
driver, designed for transition mode operation, in
fixed off-time, variable frequency, PWM
modulation.
This type of modulation provides a current on the
PFC boost inductor comparable to that of
traditional continuous mode modulation.
STEVAL-ISF001V1
www.st.com
