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L6384ED 데이터시트(PDF) 9 Page - STMicroelectronics

부품명 L6384ED
상세설명  High-voltage half bridge driver
PDF  17 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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L6384ED 데이터시트(HTML) 9 Page - STMicroelectronics

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L6384E
Bootstrap driver
9/17
For example: using a power MOS with a total gate charge of 30nC the drop on the bootstrap
DMOS is about 1V, if the Tcharge is 5µs. In fact:
Vdrop has to be taken into account when the voltage drop on CBOOT is calculated: if this drop
is too high, or the circuit topology doesn’t allow a sufficient charging time, an external diode
can be used.
Figure 4.
Bootstrap driver
V
drop
30nC
5
µs
--------------- 125
Ω 0.8V
∼
⋅
=
TO LOAD
D99IN1067
H.V.
HVG
ab
LVG
HVG
LVG
CBOOT
TO LOAD
H.V.
CBOOT
DBOOT
VBOOT
VS
VS
VOUT
VBOOT
VOUT



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