Preliminary Data

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to

change without notice.

June 2007

Rev 2

1/5

5

STEVAL-ISA007V1

High power 3-phase auxiliary power supply evaluation board

Based on L5991 and ESBT STC08DE150HV

Features

Description

Auxiliary SMPS is particularly affected since it is

the entry point for all the biasing of control ICs and

cooling system powering. Standardization

towards "universal input" is reflected in more

stressful conditions for the power transistor used

as the main switch both in terms of blocking

voltage or current capability. Since almost all

auxiliary power supplies are based on fly-back

converters, the need for a blocking voltage as high

as 1500V and over, coupled with high switching

frequency operations, make the ESBTs the

perfect choice for such power supplies. The

STC08DE150HV, in conjunction with the PWM

L5991, perfectly fulfills the requirements and

brings high efficiency to the system

ST components

Transistor, 5A, 1500V, TO247-4L HV leads

TO-91

40V, 0.6A, 330mW,TO-92

1A, DO-41

1A, DO-41

200V, 30A, TO-220AC

STEVAL-ISA007V1

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