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L9961 데이터시트(PDF) 53 Page - STMicroelectronics

부품명 L9961
상세설명  Battery management system solution
PDF  63 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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L9961 데이터시트(HTML) 53 Page - STMicroelectronics

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5.9.2
Safety bypass in LS configuration
Figure 25. Fail-safe switch in LS configuation
GADG220620221421SA
L9961
VSD
DCHG
CHG
VSC
P+
P-
RDCHG
RCHG
MDCHG
MCHG
DZCHG
VB
RGCHG
From µC
Fail-safe switch
Disable CHG MOSFET driver
BFS
P+
Table 42. BOM for Fail-safe switch in HS configuration
Components Value Unit
Max.
tolerance
Rating
Comments
BFS
-
-
-
40 V
NPN fail-safe switch driven by MCU. It shall be sized in order to sink IPU
(charge current source) in case of fault during the charger fase. In case
of fault the NPN base shall be driven high by MCU.
L9961
Safety bypass
DS14012 - Rev 1
page 53/63



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