AN1948 Datasheet, PDF (1/23 Pages) STMicroelectronics – DVD combo power supply with the VIPer53-E

AN1948
Application note
DVD combo power supply with the VIPer53-E
Introduction
The VCR is available on the market despite of the presence of the DVD readers. This
document offers a typical solution to efficient supply applications where logic, DC motor
drive and LCD display are implemented together in the 35 W power range and with any
input voltage standard (85 Vac to 265 Vac).
Low standby consumption and cost saving meet the market needs and the key features for
this application are shown in Table 1:
Figure 1. VIPer53-E board
Output 1
Output 2
Output 3
Output 4
Output 5
Output 6
Output 7
Output 8
Voltage
+/-5%
3.3 V
5 V standby
5 V power
12 V power
12 V audio
-12 V power
-25 V
4.2 V display
Table 1. Output specifications
Maximum
current
Output
power
Maximum power
1.5 A
100 mA
1.5 A
1.5 A
200 mA
15 mA
25 mA
50 mA
4.95 W
500 mW
7.5 W
18 W
2.4 W
180 mW
625 mA
210 mA
Normal operation:
35 W max. output
power
Standby operation:
750 mW max. input
power
with 40 mA on the
5 V standby output
Board size
LxWxH
170 x 70 x 40
(mm)
November 2014
DocID10413 Rev 2
1/23
www.st.com
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