L9963E datasheet(52/184 Pages) STMICROELECTRONICS

52 / 184 page

TimedBalacc = 0 (coarse)

TimedBalacc = 1 (fine)

ThrTimedBalCellxx [dec]

ThrTimedBalCellxx [bin]

Threshold [hh:mm:ss]

105

1101001

14:56:0

0:7:0

106

1101010

15:4:32

0:7:4

107

1101011

15:13:4

0:7:8

108

1101100

15:21:36

0:7:12

109

1101101

15:30:8

0:7:16

110

1101110

15:38:40

0:7:20

111

1101111

15:47:12

0:7:24

112

1110000

15:55:44

0:7:28

113

1110001

16:4:16

0:7:32

114

1110010

16:12:48

0:7:36

115

1110011

16:21:20

0:7:40

116

1110100

16:29:52

0:7:44

117

1110101

16:38:24

0:7:48

118

1110110

16:46:56

0:7:52

119

1110111

16:55:28

0:7:56

120

1111000

17:4:0

0:8:0

121

1111001

17:12:32

0:8:4

122

1111010

17:21:4

0:8:8

123

1111011

17:29:36

0:8:12

124

1111100

17:38:8

0:8:16

125

1111101

17:46:40

0:8:20

126

1111110

17:55:12

0:8:24

127

1111111

18:3:44

0:8:28

4.7.4

Balancing state transition

When the chip is in the NORMAL mode, the sleep conditions (communication timeout or GO2SLP command)

will demand the chip entering the SLEEP or SILENT BALANCING state depending on the slp_bal_conf. Silent

balancing is only available for Timed Balancing mode (Balmode = 10 and slp_bal_conf = 1), while Manual

Balancing mode (Balmode = 01) will be interrupted and the state transition is forced to SLEEP, regardless of

slp_bal_conf.

If the slp_bal_conf = 0, whatever kind of balancing is currently being operated, it will be stopped, and then the

chip will turn to the SLEEP mode.

4.7.5

Electrical parameters

All parameters are tested and guaranteed in the following conditions, unless otherwise noted:

9.6 V < VBAT < 64 V; -40 °C < Tambient < 105 °C

Table 44. Balancing electrical characteristics

Symbol

Parameter

Test conditions

Min. Typ. Max. Unit

VBAL_OPEN

Open load Fault Detection

Voltage Threshold

Balance Power OFF (Open Load), voltage

ramp on Power Drain

0.3 0.55 0.74

IPD_CB

Output OFF Open Load

Detection Pull-down Current

VDS = 5 V

100

300

µA

L9963E

Cell balancing

DS13636 - Rev 12

page 52/184

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