2

TRUTH TABLE

INPUT

OUTPUT

ALI, BLI, CLI, DLI

AHI, BHI, CHI, DHI

UVLO/EN

ALO, BLO,

CLO, DLO

AHO, BHO,

CHO, DHO

XX

0

X

0

0

1

X

1

>100mV

1

0

00

1

X

0

1

01

1

X

0

0

1

0

1

<100mV

1

1

NOTE: X signifies that input can be either a “1” or “0”.

Pin Descriptions

PIN

NUMBER

SYMBOL

DESCRIPTION

2

27

17

14

AHB

BHB

CHB

DHB

(xHB)

High-side Bootstrap supplies. One external bootstrap diode and one capacitor are required for each. Connect

cathode of bootstrap diode and positive side of bootstrap capacitor to each xHB pin.

3

5

10

12

AHI

BHI

CHI

DHI

(xHI)

High-Side Logic Level Inputs. Logic at these three pins controls the three high-side output drivers, AHO (Pin 1),

BHO (Pin 26) and CHO (Pin 18) and DHO (Pin 15). When xHI is low, xHO is high. When xHI is high, xHO is low.

the outputs follow the inputs. Care must be taken to avoid shoot-through in this application. EN (Pin 9) also over-

100

4

6

11

13

ALI

BLI

CLI

DLI

(xLI)

Low-Side Logic Level Inputs. Logic at these three pins controls the three low-side output drivers ALO (Pin 24),

BLO (Pin 23) and CLO (Pin 21) and DLO (Pin 20). If the upper inputs are grounded then the lower inputs controls

internal 100

Ground. Connect the sources of the low-side power MOSFETs to this pin.

simultaneously. While not necessary in most applications, a decoupling capacitor of 0.1

µF or smaller may be

9

RUV/EN

1

26

18

15

AHO

BHO

CHO

DHO

(xHO)

High-Side Outputs. Connect the gates of the high-side power MOSFETs to these pins.

28

25

19

16

AHS

BHS

CHS

DHS

(xHS)

High-Side Source connection. Connect the sources of the high-side power MOSFETs to these pins. The nega-

tive side of the bootstrap capacitors should also be connected to these pins.

22

24

23

21

20

ALO

BLO

CLO

DLO

(xLO)

Low-Side Outputs. Connect the gates of the low-side power MOSFETs to these pins.

NOTE: x = A, B, C and D

HIP4084