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L9963E 数据表(PDF) 156 Page - STMicroelectronics |
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L9963E 数据表(HTML) 156 Page - STMicroelectronics |
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156 / 184 page  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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