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L9301 数据表(PDF) 25 Page - STMicroelectronics

部件名 L9301
功能描述  Automotive octal low side driver or quad low side plus quad high side driver
PDF  51 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L9301 数据表(HTML) 25 Page - STMicroelectronics

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L9301
Configurable high/low side driver
50
8.2.7
Over current (OC) comparator self-test
L9301 provides driver OC (over current) comparator self-test function. During OFF phase,
the OC comparator still works and the expected result is '1' due to high drain-source voltage.
If L9301 detects OC '0' during OFF phase, the SPI bit oc_comparator_f is set to '1'.
For DRN1-4, when they are configured as LS, a Short To Ground (STG) fault will not trigger
OC '1', so L9301 will report both STG and OC comparator self-test fail, when they are
configured as HS, a short-to-battery (STB) fault will not trigger OC '1', so L9301 will report
both STB and OC comparator self-test fail.
8.2.8
Electrical characteristics related to diagnosis
Table 17. Electrical characteristics related to diagnosis
Pin
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
DRN1-4
SRC1-4
TOver_temperature_blanking
Over temperature
blanking time
Tested by scan
1
-
1.5
μs
TOver_temperature_filter
Over temperature
filter time
Tested by scan
2
-
5
μs
TCharge_pump_low
Charge pump low
filter time
Tested by scan
3
-
5
μs
TCharge_pump_low_blanking
Charge pump low
blanking time
Tested by scan
25
-
40
μs
Tdiode_loss_filter_time
Diode loss filter time Tested by scan
3
-
5
μs
Ropen_load_HLS
Min. resistor value
open load detection
Not tested
10
-
kΩ
IOC_HLS
Over current
threshold 1
-1
2
3
A
IOC_HLS
Over current
threshold 2
-3
4
5
A
TFLT_OC_HLS
Over current filtering
time
Tested by scan
3
-
5
μs
TFLT_diagoff_HLS
Filtering open load
and short to GND
diag. off
Tested by scan
55
-
80
μs
Td_blank0_HLS
Diagnosis blanking
time after switch-off
Tested by scan
900
-
1300
μs
Td_blank1_HLS
Diagnosis blanking
time after switch-off
Tested by scan
450
-
650
μs
VTOPEN_HS
Open load threshold
voltage
HS configuration
1.9
2.1
2.3
V
VTOPEN_LS
LS configuration
2.7
2.9
3.1
V



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