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STEVAL-ISA122V1
Wide input-range, single-output 5 V / 11 W power supply
demonstration board based on the VIPer27
Data brief
Features
■
Wide input voltage range (VIN): 90 to 265 Vrms
■
Nameplate output voltage (Vout): 5 V
■
Max output current IOUT: 2.2 A
■
Precision of output regulation: ±5%
■
High frequency output voltage ripple
(ΔVout_HF): 50 mV
■
Max ambient operating temperature (TA):
60 °C
■
RoHS compliant
Description
The STEVAL-ISA122V1 demonstration board
meets the specifications of a wide range of
auxiliary power supplies for applications including
LCD or plasma TVs and desktop computers,
where the power supply that converts the energy
from the mains often includes two modules.
One module is the main power supply which
provides most of the power, and is off when the
application is shut down or in standby mode.
The other is the auxiliary power supply, which
only provides energy to specific parts of the
equipment such as the USB ports, remote
receivers, or modems, but stays on when the
application is in standby mode.
It is optimized for very low standby consumption,
which allows it to satisfy the most stringent
energy-saving requirements.
The VIPer27 has a switching frequency of 115
kHz, which helps to reduce the transformer size.
February 2013
Doc ID 024124 Rev 1
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Schematic diagram
STEVAL-ISA122V1
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Schematic diagram
Figure 1.
STEVAL-ISA122V1 circuit schematic
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Revision history
2
Revision history
Table 1.
Document revision history
Date
Revision
11-Feb-2013
1
Changes
Initial release.
Doc ID 024124 Rev 1
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STEVAL-ISA122V1
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