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AN2929 Datasheet(PDF) 19 Page - STMicroelectronics

Part # AN2929
Description  In consumer applications such as LCD or plasma TVs
PDF  32 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2929 Datasheet(HTML) 19 Page - STMicroelectronics

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AN2929
Testing the board
Doc ID 15333 Rev 2
19/32
Figure 18.
Input power vs. input voltage for different loads
Figure 19.
Average switching frequency vs. input voltage
Depending on the equipment supplied, we can have several criteria to measure the standby
or light-load performance of a converter. One criterion is the measure of the output power
when the input power is equal to one watt. Table 16 gives the output power needed to have
1 W of input power in different line conditions and Figure 20 illustrates this.
AM02173v1
0
1
2
3
4
80
120
160
200
240
280
V INAC
F
SW_AVG (kHZ)
25 mW
0 mW
50mW
POUT



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