ST ISA018V1 User Manual

Features

■ Input voltage range:

– 185 to 265 Vac
– 85 to 185 Vac (with voltage double)

■ Input frequency range 50/60 Hz

■ Output voltage 24 V ± 2%

■ Output power 150 W (240 W peak)

■ Compliant with standards:

– EN60950 for safety
– EN55014 for EMI

■ RoHS compliant

Description

STEVAL-ISA018V1

150 W (240 W peak) resonant SMPS

demonstration board based on the L6599

Data brief

STEVAL-ISA018V1

The STEVAL-ISA018V1 demonstration board
presents a high efficiency solution for industrial
switched-mode pow er su pplies (SMPS) up to 1 50
W continuous output power, with peak power of
240 W . The design tak es adv antage of a resonan t
approach to minimize switching losses, resulting
in efficiency higher than 90%.

The design is based on a half-bridge topolog y
operated in a resonant manner by means of a
resonant LC tank, driven by a dedicated L6599
high-voltage resonant controller.

The board provides one regulated output,
V

= 24 V with IO = 6 A and overload capability up

O

to I

= 10 A.

O

Output voltage and current are controlled by a
secondary-side IC (TSM1011), which provides
square output regulation, while the overload is
managed by thermal protection (PTC) on the
output rectifiers.

April 2010 Doc ID 17434 Rev 1 1/4

For further information contact your local STMicroelectronics sales office .

www.st.com

4

Schematic diagram STEVAL-ISA018V1

1 Schematic diagram

Figure 1. Circuit schematic

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2/4 Doc ID 17434 Rev 1