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L9301 数据表(PDF) 35 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  54 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) 35 Page - STMicroelectronics

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DS11400 Rev 9
35/54
L9301
Low side driver
53
In configuration 3 the off diagnosis is enabled for HS1-4 only. Considering that the diagnosis
blanking time can be longer than the off time of PWM, the diagnosis results can be affected.
The short to VB fault can be detected by the OC fault when it is switched on. The Open
Load Fault can be detected when PWM is disabled (PWM disable SPI bit = 1) only because
in such a condition both HS and LS are OFF. In this condition the OUTx is pulled up by HS
off diagnosis pull up current (typical 75 µA) and it's necessary to wait the time needed to
discharge OUTx to get Open Load (OL) detection. The time to be considered starts from the
PWM disable bit writing.
In configuration 2 and 3, unless the PWM enable SPI bit for OUT1-4 and DRN/SRC1-4 are
set, the eight drivers are all switched off.
Table 25. Configuration 2
Parameter
Test condition
Min.
Typ.
Max.
Unit
Minimum OFF time for
correct diagnostic (Blank
time 0)
Application note NOT TESTED
(ESD cap < 12 nF, Bit_blank = 0)
4140
-
-
µs
Minimum OFF time for
correct diagnostic (Blank
time 1)
Application note NOT TESTED
(ESD cap < 6 nF, Bit_blank=1)
2190
-
-
µs
Table 26. Configuration 3
Parameter
Test condition
Min.
Typ.
Max.
Unit
Minimum OFF time for
correct diagnostic (Blank
time 0)
Application note NOT TESTED
(ESD cap < 12 nF, Bit_blank = 0)
980
-
-
µs
Minimum OFF time for
correct diagnostic (Blank
time 1)
Application note NOT TESTED
(ESD cap < 6 nF, Bit_blank=1)
530
-
-
µs



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