1

16

2

3

4

5

6

7

8

15

14

13

12

11

10

9

DESAT

GND2

GND1

RDY

IN-

IN+

GND1

FLT

RST

NC

OUT

CLAMP

ISO5451

www.ti.com

SLLSEO1B – JUNE 2015 – REVISED DECEMBER 2015

5 Description (continued)

The readiness for the gate driver to be operated is under the control of two undervoltage-lockout circuits

monitoring the input side and output side supplies. If either side has insufficient supply the RDY output goes low,

otherwise this output is high.

The ISO5451 is available in a 16-pin SOIC package. Device operation is specified over a temperature range from

–40°C to 125°C ambient.

6 Pin Configuration and Function

DW Package

16-Pin SOIC

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

1, 8

-

Output negative supply. Connect to GND2 for Unipolar supply application.

DESAT

2

I

Desaturation voltage input

GND2

3

-

Gate drive common. Connect to IGBT emitter.

NC

4

-

Not connected

5

-

Most positive output supply potential.

OUT

6

O

Gate drive voltage output

CLAMP

7

O

Miller clamp output

GND1

9, 16

-

Input ground

IN+

10

I

Non-inverting gate drive voltage control input

IN-

11

I

Inverting gate drive voltage control input

RDY

12

O

Power-good output, active high when both supplies are good.

FLT

13

O

Fault output, low-active during DESAT condition

RST

14

I

Reset input, apply a low pulse to reset fault latch.

15

-

Positive input supply (3 V to 5.5 V)

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