L9301 datasheet(30/51 Pages) STMICROELECTRONICS

Part #	L9301

Description	Automotive octal low side driver or quad low side plus quad high side driver

PDF	51 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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30 / 51 page

Low side driver

L9301

30/51

DocID028688 Rev 6

9.3.4

OFF state diagnostic

The device provides the off-state diagnostic for each channel.

The short to ground and open load faults can be detected. The fault is reported in a SPI

Figure 12. LS configuration diagnostic

The diagnostic blanking time is configurable through the dedicated diagoff_blank_sel bit.

9.3.5

DLOSS

In case the device is configured as low side and external diodes are used for freewheeling,

there is the possibility through a dedicated SPI bit to enable the ‘diode loss’ diagnosis that is

used to detect if the external diode is no more connected checking if during the OFF phase

the internal clamp is activated. Another SPI bit allows to configure the actions to be taken in

case of DLOSS fault.

Table 20. LS diagnostic

DIAGOL

DIAGLV

FAULT DETECTION

no fault

not possible

open load

short to ground

L9301 Datasheet(PDF) 30 Page - STMicroelectronics