STEVAL-ISF001V2 Datasheet, PDF (1/4 Pages) STMicroelectronics – New 3 kW FOT PFC based on the L6563S and STW88N65M5

STEVAL-ISF001V2
New 3 kW FOT PFC based on the L6563S and STW88N65M5
Features
■ FOT power systems based on the L6563
■ Single range input voltage from 185 V to 265 V
@ 50/60 Hz line
■ Output voltage 400 V ±5%
■ Inductor saturation protection
■ Optimized EMC input filter (EN55014 and
EN55022)
■ Power factor > 0.98
■ Efficiency higher than 95%
■ THD below 10% starting from 1 kW
■ RoHS compliant
Description
The STEVAL-ISF001V2 demonstration board
provides a compact and ready-to-use solution for
the implementation of a simple PFC system able
to supply loads with a power close to the
maximum delivered in the most typical domestic
installations.
For such a power range the use of a continuous
mode PFC operation becomes mandatory in
order to drain from the net a current with an RMS
value that does not surpass the maximum allowed
from the metering system and to have a
reasonable device size involved in the system
operations.
Normally, the use of a standard continuous mode
driver chip means the use of a more expensive
and complex driver along with all the passive
components required.
STMicroelectronics has patented a solution that
allows the use of a simple driver, designed for
transition mode operation, in a fixed off-time,
variable frequency, PWM modulation.
This kind of modulation gives a current on the
boost inductor of the PFC that is comparable with
Data brief
the current obtained using a classic continuous
mode modulation.
May 2012
Doc ID 023212 Rev 1
For further information contact your local STMicroelectronics sales office.
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