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L9963E 数据表(PDF) 137 Page - STMicroelectronics |
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L9963E 数据表(HTML) 137 Page - STMicroelectronics |
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137 / 184 page  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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