ST ISF001V1 User Manual

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

Data brief

STEVAL-ISF001V1

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.

November 2009	Doc ID 16769 Rev 1	1/4
For further information contact your local STMicroelectronics sales office.		www.st.com

Schematic diagram	STEVAL-ISF001V1

1 Schematic diagram

Figure 1. STEVAL-ISF001V1 schematic diagram

AM01975v1

2/4	Doc ID 16769 Rev 1