L9788 datasheet(125/264 Pages) STMICROELECTRONICS

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DS12308 Rev 4

125/264

L9788

Pre-drivers - ExtFET (MOS_Gate1/2/3/4/5) - PRD[1:5]

263

9.5

OFF state diagnostic

The Predriver follows the same off diagnosis as low-side driver. But despite the fast mode of

all drivers in off diagnostic condition (Ipupd_MODE bit), for all pre_Driver, there is a

dedicated MSC bit (IDIAG_HIGH_PDRV) to select off diagnostic high or low pull up/down

current

Conditions:

5.5 V ≤ VB_IN ≤ 18 V, Tj -40 to 175 °C unless otherwise specified;

Open load (OPL)

Driver off

The fault is latched in

MSC diagnosis register.

On read

Driver Status Error (STA)

Driver on/off When

the driver output

level is not aligned

with the cmd on/off

The fault is latched in

MSC diagnosis register.

On read

Table 53. Pre-driver - ExtFET error handling (continued)

Type of error

Detection

condition

Action

Clear

MSC flag

Restart condition

Table 54. Pre-driver - ExtFET electrical characteristics

Symbol

Parameter

Test condition

Min

Typ

Max

Unit

Pre-driver

Vgate_on

On state MOS_

Gate voltage

I_source_00

MOS_Gate

1/2/3/4/5

Vgate_off

Off state

MOS_Gate

voltage

I_sink_00

0.1

MOS_Gate

1/2/3/4/5

Ileak_off

Leakage current

of MOS_Gate @

driver in tri-state

--1

µA

MOS_Gate

1/2/3/4/5

I_source_00

Pre-driver source

current 1

MOS_Gate1/2/3/4/5 short to

gnd

MOS_Gate

1/2/3/4/5

I_source_01

Pre-driver source

current 2

MOS_Gate1/2/3/4/5 short to

gnd

710

MOS_Gate

1/2/3/4/5

I_source_10

Pre-driver source

current 3

MOS_Gate1/2/3/4/5 short to

gnd

2.8

5.2

MOS_Gate

1/2/3/4/5

I_source_11

Pre-driver source

current 4

MOS_Gate1/2/3/4/5 short to

gnd

1.3

2.6

MOS_Gate

1/2/3/4/5

I_source_O2

Pre-driver source

current 5

MOS_Gate1/3/ short to gnd

0.175

0.25

0.325

MOS_Gate

1/3

I_sink_00

Pre-driver sink

current 1

MOS_Gate1/2/3/4/5 short to

-26

-20

-14

MOS_Gate

1/2/3/4/5

I_sink_01

Pre-driver sink

current 2

MOS_Gate1/2/3/4/5 short to

-13

-10

-7

MOS_Gate

1/2/3/4/5

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