IRDM983-025MB, IRDM983-035MB

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20

Lead Definitions

Symbol

Pin #

Description

VSP

10

Voltage Set Point analog input. Provides the value of the PWM modulation index to the controller.

PG

14

Provides speed feedback to through pulses per revolution. It is an open drain output 15V tolerant.

Output is a square wave of a 3 pulses per electrical cycle of fundamental frequency

DIR

15

Motor Direction Input (internally pulled up high = UVW)

EFF

9

Load curve selection parameter Input for efficiency improvement

XTAL

40

Clock buffer output

CLKIN

1

Clock buffer input

VSS

11

Logic ground

COM

16,17

Analog input ITRIP and Power Ground and Low side MOSFET cource

VCC

13

15V supply voltage

HALL1+

4

Hall sensor 1 positive input

HALL1-

3

Hall sensor 1 negative input

HALL2+

6

Hall sensor 2 positive input

HALL2-

5

Hall sensor 2 negative input

TST1

8

Pin for factory testing

– connect to VDD in normal application

TST2

7

Pin for factory testing

– connect to VSS in normal application

VDD

2

3.3V output

U

18,19

U phase output

V

20,21

V phase output

W

22,23,24,

25,26

W phase output

VBU

37

Phase U High side Bootstrap capacitor positive

VBV

38

Phase V High side Bootstrap capacitor positive

VBW

39

Phase W High side Bootstrap capacitor positive

VSU

36

Phase U High side Bootstrap capacitor negative

VSV

35

Phase V High side Bootstrap capacitor negative

VSW

34

Phase W High side Bootstrap capacitor negative

DCBUS

27,28,29,

30,31,32,

33

DC Bus voltage