STEVAL-ISA115V1
12 V, 150 mA non-isolated buck converter using VIPer™ Plus VIPER06XS
Data brief
Description
The STEVAL-ISA115V1 evaluation board is a 12
V / 0.15 A power supply set in buck topology with
the VIPER06XS, a new off-line high voltage
converter by STMicroelectronics.
The features of the device include an 800 V
avalanche rugged power section, PWM operation
at 30 kHz with frequency jittering for lower EMI,
current limiting with adjustable set point, onboard
soft-start, a safe auto-restart after a fault
condition and low standby power consumption.
Available protection features include thermal
shutdown with hysteresis, delayed overload
protection and open loop failure protection. All
protection is auto-restart mode.
STEVAL-ISA115V1
Features
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Universal input mains range:
−
input voltage: 90 VAC - 264 VAC
−
frequency: 45 Hz - 65 Hz
Single-output voltage: 12 V @ 0.15 A
continuous operation
Standby mains consumption: < 50 mW @
265 VAC
Average efficiency: > 75%
Fully protected against faults (overload,
feedback disconnection and overheating)
EMI: in accordance with EN55022-Class-B
RoHS compliant
May 2014
DocID024373 Rev 2
For further information contact your local STMicroelectronics sales
office
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www.st.com
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GND
AC IN
R1
C1
D1
L1
C2
DocID024373 Rev 2
R4b
R4a
C3
D4
GND
CF
VDD
LIM
R6
CFB
FB
VIPER06XS
CC
COMP
DRAIN DRAIN DRAIN DRAIN DRAIN
C7
R3
R5a
C8
L2
D3
C9
Rbl
GND
Vout
1
R5b
Daux
Schematic
STEVAL-ISA115V1
Schematic
Figure 1: Schematic diagram
STEVAL-ISA115V1
2
Revision history
Revision history
Table 1: Document revision history
Date
Revision
Changes
22-Apr-2013
1
First release.
08-May-2014
2
Title has been updated.
DocID024373 Rev 2
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STEVAL-ISA115V1
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