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AN1132 Datasheet(PDF) 7 Page - STMicroelectronics

Part # AN1132
Description  90W SMPS FOR MONITORS WITH STANDBY FUNCTION
PDF  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1132 Datasheet(HTML) 7 Page - STMicroelectronics

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Table 7. Standby function: transition thresholds in terms of input power
VAC [V]
88
110
160
220
264
PinSB [W]
10
11
12.5
14
15
PinNW [W]
37
38
39
41
42
Note: there is no risk of premature current limitation or transformer saturation when the system operates at fSB up to
60W input power. To reduce PinNW, increase fosc or reduce fSB.
Figure 4. Drain voltage at full load (left: Vin = 100 VDC, right: Vin = 300 VDC)
Figure 5. Drain voltage in OFF mode (left: Vin = 100 VDC, right: Vin = 300 VDC)
Figure 6. Load transient (0-0.3A) on 200V output
Left
-1: 200V output
-A1: L5991 pin 16 (St-by)
Right
-1: L5991 E/A out (pin 6)
-A1: L5991 pin 16 (St-by)
AN1132 APPLICATION NOTE
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