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STEVAL-ISA134V1
12 V - 4 W, 115 kHz isolated flyback based on the VIPer06
Data brief
Protection features available include thermal
shutdown with hysteresis, delayed overload
protection, and open loop failure protection (the
latter available only if auxiliary winding is used).
This flyback converter design is suitable for
various applications, such as external adapter or
as an auxiliary power supply in consumer
equipment.
Features
• 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 °C
Description
The STEVAL-ISA134V1 demonstration board is a
a 12 V - 4 W power supply in isolated flyback
topology using the VIPer06, a new off-line high
voltage converter by STMicroelectronics.
The VIPer06 features an 800 V avalanche rugged
power section, PWM operation at 115 kHz with
frequency jittering for lower EMI, cycle-by-cycle
current limit with adjustable set point, on-board
soft-start and safe auto-restart after a fault
condition.
April 2013
DocID024565 Rev 1
For further information contact your local STMicroelectronics sales office.
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www.st.com
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Schematic diagram
1
STEVAL-ISA134V1
Schematic diagram
Figure 1. STEVAL-ISA134V1 circuit schematic
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STEVAL-ISA134V1
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Revision history
Revision history
Table 1. Document revision history
Date
Revision
16-Apr-2013
1
Changes
Initial release.
DocID024565 Rev 1
3/4
STEVAL-ISA134V1
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