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L9945 Datasheet(PDF) 37 Page - STMicroelectronics

No. de pieza L9945
Descripción Electrónicos  Automotive fully configurable 8-channel High/Low side MOSFET pre-driver suitable for 12 V and 24 V systems
PDF  144 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9945 Datasheet(HTML) 37 Page - STMicroelectronics

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Table 24. Diagnostic strategy for peak & hold configuration
Fault type
Circuit state
HS OFF
LS OFF
HS ON
LS OFF
HS OFF
LS ON
HS ON
LS ON
HS
LS
HS
LS
HS
LS
HS
LS
OUT1 STB
STB
No fail
No fail
No fail
STB
No fail(1)
No fail(2)
No fail(1)
OC(1)
OC(1)
OUT1 STG
No fail
STG
OC
STG
No fail
No fail
OC
No fail (2)
OC pin(3)
OC pin(3)
OUT1 OL
No diag(4)
No diag(4)
No fail
OL
OL
No fail
No fail (2)
No fail (2)
No STB/STG/OL(4)
No STB/STG/OL(4)
OUT4 STB
STB
No fail
No fail(2)
No fail
STB
OC
No fail
OC
OC pin(3)
OC pin(3)
OUT4 STG
No fail
STG
No fail(1)
STG
No fail
No fail(2)
No fail(1)
No fail(1)
OC(1)
OC(1)
OUT4 OL
No diag(4)
No diag(4)
No fail
OL
OL
No fail
No fail (1)
No fail(1)
No STB/STG/OL(4)
No STB/STG/OL(4)
OUT1-OUT4 short (SCL)
No diag(4)
No diag(4)
No fail
No fail
No fail
No fail
OC pin(3)
OC pin(3)
No STB/STG/OL(4)
No STB/STG/OL(4)
1. Current limited by the load. In case current is greater than the OC threshold, protection is triggered and external FET is shut OFF. However,
diagnostic latches are not updated.
2. Current in the shunt resistor is 0 mA. Micro may monitor.
3. Depending on transistor switch ON delay and configured tblank_oc.
4. Depending on PHx_diag_strategy.
L9945
Functional description
DS12275 - Rev 10
page 37/144



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