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A6986I датащи(PDF) 18 Page - STMicroelectronics

номер детали A6986I
подробное описание детали  Automotive 38 V, 5 W synchronous iso-buck converter for isolated applications
PDF  62 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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A6986I датащи(HTML) 18 Page - STMicroelectronics

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Secondary output line regulation
The secondary output line regulation is defined, similarly to the primary side, as the variation of the secondary
output voltage due to the input voltage change at a specific current. The secondary output line regulation is mainly
affected by the transformer and in particular by its leakage inductance.
Keeping constant the leakage inductance (i.e. using the same transformer), a higher input voltage allows to
slightly increase the isolated output voltage, as shown in Figure 16.
Figure 17. Secondary output line regulation
0%
1%
2%
3%
4%
5%
6%
12
13
14
15
16
17
18
19
20
21
22
23
24
VIN [V]
The input voltage value influences the peak current in the secondary winding (see Figure 17), hence determining
the amount of energy delivered to the secondary output and in turn the isolated output voltage value.
Figure 18. Secondary winding current at different input voltages
A6986I
Output voltage line regulation
DS13481 - Rev 2
page 18/62



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