3940

FULL-BRIDGE POWER

MOSFET CONTROLLER

www.allegromicro.com

7

Terminal Functions

Terminal

Terminal Name

Function

Number

VDRAIN

Kelvin connection to MOSFET high-side drains

1

LSS

Gate-drive source return, low-side

2

GLB

Gate-drive B output, low-side

3

SB

Motor phase B input

4

GHB

Gate-drive B output, high-side

5

CB

Bootstrap capacitor B

6

VIN

Regulated 13 V gate drive supply input

7

VREG13

Regulated 13 V gate drive supply output

8

CA

Bootstrap A capacitor

9

GHA

Gate-drive A output, high-side

10

SA

Motor phase A input

11

GLA

Gate-drive A output, low-side

12

VBB

Battery supply

13

CP2

Charge pump connection for pumping capacitor

14

VCP

Charge pump output

15

CP1

Charge pump connection for pumping capacitor

16

GND

Common ground and dc supply returns

Electrically connected to exposed thermal pad of LP package

17

FAULT

Open-drain fault output

18

OVSET

DC input, overvoltage threshold setting for V

BB

19

VREG5

Regulated 5 V supply output

20

MODE

Control input

21

SR

Control input

22

ENABLE

Control input

23

PHASE

Control input

24

RESET

Control input

25

LONG

Control input, long or short deadtime

26

IDEAD

Adjust current for basic deadtime

27

VDSTH

DC input, drain-to-source monitor threshold voltage

28