L9374TRLF datasheet(68/80 Pages) STMICROELECTRONICS

68 / 80 page

Programmers guide

L9374LF

68/80

DocID025414 Rev 1

PGND-loss:

This bit is set by a power ground loss and is cleared by accessing this address (Refer to

section 4.8.5 for more details)

Loss of freewheeling diode (Dx-loss):

This bit is set by loss of the freewheeling diode and is cleared by accessing this address

(refer to section 4.8.7 for more details).

Gate voltage on status (Qx_ON):

This bit shows the status of the output driver gate. A comparator monitors the voltage of the

gate.

If there is any actuation of the output between two SPI transfers the cycle time this bit is set.

The bit is cleared by accessing this address (Refer to section: Gate monitoring for more

information).

Gate voltage off status (Qx_OFF):

This bit shows the status of the output driver gate. A comparator monitors the voltage of the gate.

If the output is disabled between two SPI transfers the cycle time this bit is set. The bit is

cleared by accessing this address (Refer to section: Gate monitoring for more information).

Current / PWM controller select:

This bit is set when the Current Controlled is disabled and the PWM Control is active (refer

to: Current controller / PWM enable for details).

Overload threshold:

This bit shows the overload threshold selected in Configuration register 2 (Command

address E) actual status of the threshold of the overload diagnosis (refer to Table 15.)

Table 61. Current / PWM controller select

CCPWM

Status current controller off

Current Controller Enabled

PWM Control Enabled (Current Control disabled)

Table 62. Overload threshold

OV_TH

Status overload threshold

Typical overload threshold value

Overload threshold 1

7.5 A

Overload threshold 2

8.5 A

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