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L9945 Datasheet(PDF) 132 Page - STMicroelectronics

Part # L9945
Description  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  151 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9945 Datasheet(HTML) 132 Page - STMicroelectronics

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Figure 34. OC detection through DSM or Shunt Measurement in Low Side configuration
GADG1003171213PS
BATT34
LS NMOS
DRN3
VBATT
GNSP3
SNGP3
RG
RPD
CM
RM
TjFET
RSH
PGND34
VOC
OC
VPS
ADC
BCF
1
1
0
OC_Batt_comp_xx
ΔT = TjFET - Tj
Batt_fact
_config
1
0
OC_DS_Shunt_xx
Tj ADC
TCF
0
1
OC_Tem
p_comp
1
00
Others
OC_config_xx
VSENSE
L9945
BOARD
DAC
Note:
VOC compensation against temperature and battery variations is shown in Figure 34. In case of High Side
configuration with NMOS, RSH and the LOAD must be swapped, and the OC_DS_Shunt_xx signal is negated.
L9945
ON state diagnostics
DS12275 - Rev 8
page 132/151



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