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STEVAL-ISA135V1
4 W, 12 V output, isolated flyback converter using VIPer™ Plus VIPER06HS
Data brief
Description
The STEVAL-ISA135V1 is a 12 V - 4 W power
supply in isolated flyback topology based on the
VIPer06HS, a new offline high voltage converter
having, as main features: 800 V avalanche
rugged power section, PWM operation at 115
kHz with frequency jittering for lower EMI, cycleby-cycle current limit with adjustable set point,
on-board soft-start and safe auto-restart after a
fault condition.
Features
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AC main input voltage: VIN 85 VAC - 265 VAC
Main frequency: fL 50 Hz - 60 Hz
Output voltage: VOUT 12 V
Max output current: IOUT 333 mA
Precision of output regulation:
ΔVOUT_LF ±5 %
High frequency output voltage ripple:
ΔVOUT_HF 50 mV
Min active mode efficiency: ηAV 71 %
Max ambient operating temperature:
TAMB 60 ºC
Thermal shutdown with hysteresis
Delayed overload protection
Open loop failure protection (if auxiliary
winding is used)
RoHS compliant
May 2014
DocID025243 Rev 2
For further information contact your local STMicroelectronics sales
office
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www.st.com
Schematic diagram
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STEVAL-ISA135V1
Schematic diagram
Figure 1: STEVAL-ISA135V1 circuit schematic
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Revision history
Revision history
Table 1: Document revision history
Date
Version
Change
02-Oct-2013
1
Initial release.
08-May-2014
2
Title has been updated.
DocID025243 Rev 2
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STEVAL-ISA135V1
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