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AN1376 bảng dữ liệu(PDF) 12 Page - STMicroelectronics

tên linh kiện AN1376
Giải thích chi tiết về linh kiện  25W QUASI-RESONANT FLYBACK CONVERTER FOR
PDF  35 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN1376 bảng dữ liệu(HTML) 12 Page - STMicroelectronics

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AN1376 APPLICATION NOTE
12/35
7
DYNAMIC LOAD TESTS
Regulated Output
Figure 9.
The pictures show the output voltage regulation against a dynamic load variation of the feed
backed voltage, at the nominal input voltage values. As shown in the left pictures the response
after the connector is not very good from the peak point of view, even if the response is quite
fast. Making the same measure before the filter inductor (L4), at the feed back divider connec-
tion points, the response is much better (
≈2.2 %). This means that the filter inductor heavily
Load condition:
+5V, +7V, +12V, +30V:
FULL LOAD
+3,3V:
LOAD 50 %
÷100%, 70Hz
@115 VAC - 50Hz
@220 VAC - 50Hz
CH3:
+3V3 Vout at test points
CH1:
+30 Vout
CH4:
+3V3 Iout
CH2:
+12 Vout
R1:
+3V3 Vout before L4
CH3:
+7 Vout
CH4:
+3V3 Iout



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