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L9963E Scheda tecnica(PDF) 156 Page - STMicroelectronics

Il numero della parte L9963E
Spiegazioni elettronici  Automotive Multicell battery monitoring and balancing IC
PDF  184 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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L9963E Scheda tecnica(HTML) 156 Page - STMicroelectronics

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6.11.2
Centralized BMS
In the centralized approach, a single PCB holds the whole BMS circuitry. It features both Low Voltage and
High Voltage domains:
•
L9963E in the High Voltage domain is configured with SPIEN = 0, communicating on the vertical interface
through isolated SPI, implementing Capacitive-Based Insulation.
•
The L9963T transceiver positioned in the Low Voltage domain acts as SPI to isolated SPI transceiver,
translating commands sent by the MCU via SPI into differential signals propagating through the vertical
interface (and vice-versa). Alternatively, L9963E in Transceiver mode can be used instead of L9963T. In both
cases, Transformer-Based Insulation is used.
Figure 50. Centralized BMS
MCU
SDI
SDO
SCK
SCS
SDO
SDI
NCS
SCK
L9963T
ISOP
ISOM
LOW VOLTAGE PCB DOMAIN
L9963E
HIGH VOLTAGE PCB DOMAIN
L9963E
SLAVE 2
L9963E
SLAVE 3
L9963E
SLAVE N
ISOLP_SDI
ISOLM_NCS
ISOHP
ISOHM
ISOLP_SDI
ISOLM_NCS
ISOHP
ISOHM
ISOLP_SDI
ISOLM_NCS
ISOHP
ISOHM
ISOLP_SDI
ISOLM_NCS
ISOHP
ISOHM
isotx_en_h = 0
SLAVE 1
BMS
(Slave Unit)
BMS
(Slave Unit)
BMS
(Slave Unit)
BMS
(Slave Unit)
L9963E
Communication architectures
DS13636 - Rev 12
page 156/184



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