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L6986I датащи(PDF) 16 Page - STMicroelectronics

номер детали L6986I
подробное описание детали  38 V, 5 W synchronous iso-buck converter for isolated applications
PDF  60 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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L6986I датащи(HTML) 16 Page - STMicroelectronics

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4.7
Output voltage line regulation
All results shown in this section come from measurements performed using the reference schematic depicted in
figure below.
Figure 15. Schematic used for line and load regulation tests
Primary output line regulation
The regulator features an enhanced primary line regulation due to the peak current mode architecture. Figure 16
shows negligible output voltage variation (normalized to the value measured at VIN = 12 V) over an input voltage
range up to 24 V for L6986I with VOUT prim = 5.3 V.
Figure 16. Primary line regulation
-0.5%
-0.4%
-0.3%
-0.2%
-0.1%
0.0%
12
13
14
15
16
17
18
19
20
21
22
23
24
VIN [V]
Iout_prim = 0A
Iout_prim = 1A
Secondary output line regulation
The secondary output line regulation is defined, similarly to the primary side, as the variation of secondary the
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), an higher input voltage allows to
slightly increase the isolated output voltage, as shown in figure below.
L6986I
Output voltage line regulation
DS13647 - Rev 1
page 16/60



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