L9963E datasheet(178/184 Pages) STMICROELECTRONICS

178 / 184 page

4.13

Coulomb counting routine .....................................................101

4.13.1

Coulomb counting ...................................................... 101

Application information ......................................................... 128

6.1

Layout recommendations ......................................................128

6.1.1

PCB stackup .......................................................... 128

6.1.2

Ground connections .................................................... 128

6.1.3

Cell balancing (Force) and cell sensing (Sense) lines ........................... 131

6.1.4

Regulator capacitors .................................................... 131

6.1.5

ESD clamps for communication interfaces ................................... 131

6.2

Typical application circuit and bill of material ......................................133

6.3

Cell voltage sensing circuit.....................................................135

6.4

Current sense circuit..........................................................136

6.5

VREG regulator circuit ........................................................137

6.6

Cell balancing circuits .........................................................138

6.6.1

Cell balancing with internal MOSFETs ...................................... 138

6.6.2

Cell balancing with external MOSFETs ...................................... 139

6.7

FAULT line circuit ............................................................139

6.7.1

Distributed BMS ....................................................... 140

6.7.2

Centralized BMS ....................................................... 143

6.8

ISO lines circuit ..............................................................145

6.8.1

Transformer-based insulation ............................................. 145

6.8.2

Capacitive-based insulation .............................................. 146

6.9

NTC analog front end .........................................................147

6.9.1

Single ended measurement .............................................. 147

6.9.2

Differential measurement ................................................ 149

6.10

Unused pins.................................................................151

6.10.1

Cell pins ............................................................. 151

6.10.2

Unused GPIOs ........................................................ 152

6.10.3

Current sense ......................................................... 153

6.10.4

ISOH port ............................................................ 153

6.10.5

Busbar connection ..................................................... 153

L9963E

Contents

DS13636 - Rev 12

page 178/184

L9963E 数据表(PDF) 178 Page - STMicroelectronics

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