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L9963E Datenblatt(PDF) 137 Page - STMicroelectronics

Teilenummer L9963E
Bauteilbeschribung  Automotive Multicell battery monitoring and balancing IC
PDF  184 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9963E Datenblatt(HTML) 137 Page - STMicroelectronics

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Components Value
Unit
Max.
tolerance
Rating
Comments
RSENSE
100
µΩ
Shunt resistor used for current sensing and coulomb counting.
Rating depends on the maximum battery current (RSENSE *
ISENSE_MAX2). Different RSENSE values are possible as long
as RSENSE * ISENSE stays in the differential measurement
range [-150 ; +150] mV and the ISENSEp/ISENSEm AMR are
not violated
CISENSE_1
10
µF
10%
10 V
Filter low frequency noise on the ISENSEp/ISENSEm input.
CISENSE_2
68
nF
10%
10 V
Filter high frequency noise on the ISENSEp/ISENSEm input.
CISENSE_3
33
pF
10%
10 V
Filter high frequency noise on the ISENSEp/ISENSEm input.
Place as close as possible to ISENSEp/ISENSEm pins.
RISENSE
100
Ω
1%
1 W
Filter noise on the ISENSEp/ISENSEm input and pass BCI
tests. Exceeding 100 Ω causes a higher measurement error.
Do not use thin film resistors on these lines connected to ECU
global pins. They could drift upon System Level ESD strikes.
Use thick film or metal foil instead.
6.5
VREG regulator circuit
VREG is the main device regulator, handling most of the current consumed by L9963E in Normal mode.
Figure 36. VREG regulator circuits
L9963E
VBAT
NPNDRV
VREG
CNPN
To stack positive
terminal
CREG
MREG
AGND
Safety Enhanced BOM
L9963E
VBAT
NPNDRV
VREG
CNPN
To stack positive
terminal
CREG
MREG
AGND
Table 76. VREG regulator BOM
Components Value Unit
Max.
tolerance
Rating
Comments
CNPN
100
nF
20%
100 V
Provide battery stabilization for regulator. Filter noise coming from
battery pack. Place close to MOS drain. Connect to AGND
L9963E
VREG regulator circuit
DS13636 - Rev 12
page 137/184



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