15

9, 16

11

10

12

13

14

IN-

IN+

RDY

RST

10k

10k

FLT

0.1F

GND1

2.25V-5.5V

10R

ISO5452



C

FLTs

RSTs

to other

to other

15

9, 16

11

10

12

13

14

IN-

IN+

RDY

10k

10k

0.1F

GND1

2.25V-5.5V

10R

ISO5452



C

FLT

RST

15

9, 16

11

10

12

13

14

IN-

IN+

RDY

10k

10k

0.1F

GND1

2.25V-5.5V

10R

ISO5452



C

RST

FLT

ISO5452

www.ti.com

SLLSEQ4A – AUGUST 2015 – REVISED SEPTEMBER 2015

10.2.2.4 Local Shutdown and Reset

In applications with local shutdown and reset, the FLT output of each gate driver is polled separately, and the

individual reset lines are asserted low independently to reset the motor controller after a fault condition.

Figure 51. Local Shutdown and Reset for Noninverting (left) and Inverting Input Configuration (right)

10.2.2.5 Global-Shutdown and Reset

When configured for inverting operation, the ISO5452 can be configured to shutdown automatically in the event

of a fault condition by tying the FLT output to IN+. For high reliability drives, the open drain FLT outputs of

multiple ISO5452 devices can be wired together forming a single, common fault bus for interfacing directly to the

micro-controller. When any of the six gate drivers of a three-phase inverter detects a fault, the active low FLT

output disables all six gate drivers simultaneously.

Figure 52. Global Shutdown with Inverting Input Configuration

Copyright © 2015, Texas Instruments Incorporated

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