STEVAL-ISA007V1 Datasheet, PDF (1/5 Pages) STMicroelectronics – High power 3-phase auxiliary power supply evaluation board Based on L5991 and ESBT STC08DE150HV

STEVAL-ISA007V1
High power 3-phase auxiliary power supply evaluation board
Based on L5991 and ESBT STC08DE150HV
Preliminary Data
Features
■ 3-phase 150W auxiliary dual output SMPS
■ Input: 400Vac +/- 20%
■ Output voltage 1: 24V, 6.25A @ 90kHz
■ Output voltage 2: 5V, 0.075A @ 90kHz
■ Auxiliary output voltage: 15V, 0.01A
■ Maximum output power : 150W
■ Efficiency > 85%
■ Switching frequency > 90kHz
■ Stand-by switching frequency > 35kHz
■ Feedback: secondary regulation
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
STEVAL-ISA007V1
ST components
■ STC08DE150HV Emitter Switched Bipolar
Transistor, 5A, 1500V, TO247-4L HV leads
■ L5991A PWM SMPS controller, DIP-16
■ TL431AI shunt reference, 2.5V, 1mA...100mA,
TO-91
■ PN2222A small signal bipolar transistor, NPN,
40V, 0.6A, 330mW,TO-92
■ STTH102 high voltage ultrafast diode, 200V,
1A, DO-41
■ 1.5KE400A transil, 400V, 1.5kW, DO-201
■ STTH108 high voltage ultrafast diode, 800V,
1A, DO-41
■ STTH3002CT high efficiency ultrafast diode,
200V, 30A, TO-220AC
June 2007
Rev 2
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
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