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November 2014 DocID10240 Rev 2 1/17
17
AN1897
Application note
VIPower™: low-cost universal input DVD supply
with the VIPer22A-E
Introduction
In the past few years, many consumer products have been provided to the end user, such
as DVD or VCD players. Generally, their power supply requires multiple outputs to supply a
variety of control circuits: MCU, motor, amplifier, VFD.
Offline switch mode power supply regulators from ST’s VIPer
®
family combine high voltage,
avalanche rugged vertical power MOSFET with current mode control PWM circuitry. The
result is the innovative AC-DC converter, simpler, quicker, with reduced component count
and cheap.
The VIPer family complies with the “Blue Angel” and “Energy Star” norms, with very low total
power consumption in standby mode, thanks to the burst operation. This document presents
the application on DVD player power supply with the VIPer22A-E meeting the specifications
in Table 1.
Figure 1. VIPer22A-E evaluation board
Table 1. Output specifications
Input Output
1
Output
2
Output
3
Output
4
Output
5
Output
6
Universal
line
5 V+/-
5%
(1)
1. The accuracy of +/-5% is reached for a range of load combination only. See Section 3.2 for cross-
regulation results.
+12 V+/-
5%
(1)
-12 V+/-
5%
(1)
-26 V+/-
5%
(1)
3.3 V+/-
5%
(1)
5 V
stb
+/-
5%
(1)
Min.
85 V
ac
Max.
265 V
ac
Imin.
20 mA
Imax.1.5
A
Imax.
30
mA
Imax.
30
mA
Imax.50 mA
Imax.
150 mA
Imax.100 mA
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