HIP4082

FN3676 Rev 5.00

Page 7 of 14

September 30, 2015

HIP4082

Pin Descriptions

PIN

NUMBER

SYMBOL

DESCRIPTION

1

BHB

B High-side Bootstrap supply. External bootstrap diode and capacitor are required. Connect cathode of bootstrap

diode and positive side of bootstrap capacitor to this pin.

2

BHI

B High-side Input. Logic level input that controls BHO driver (Pin 16). BLI (Pin 3) high level input overrides BHI high

level input to prevent half-bridge shoot-through, see Truth Table. DIS (Pin 8) high level input overrides BHI high level

3

BLI

B Low-side Input. Logic level input that controls BLO driver (Pin 14). If BHI (Pin 2) is driven high or not connected

externally then BLI controls both BLO and BHO drivers, with dead time set by delay currents at DEL (Pin 5). DIS (Pin

8) high level input overrides BLI high level input. The pin can be driven by signal levels of 0V to 15V (no greater than

4

ALI

A Low-side Input. Logic level input that controls ALO driver (Pin 13). If AHI (Pin 7) is driven high or not connected

externally then ALI controls both ALO and AHO drivers, with dead time set by delay currents at DEL (Pin 5). DIS (Pin

8) high level input overrides ALI high level input. The pin can be driven by signal levels of 0V to 15V (no greater than

5

DEL

All drivers turn-off with no adjustable delay, so the DEL resistor guarantees no shoot-through by delaying the turn-on

of all drivers. The voltage across the DEL resistor is approximately Vdd -2V.

Chip negative supply, generally will be ground.

7

AHI

A High-side Input. Logic level input that controls AHO driver (Pin 10). ALI (Pin 4) high level input overrides AHI high

level input to prevent half-bridge shoot-through, see Truth Table. DIS (Pin 8) high level input overrides AHI high level

8

DIS

DISable input. Logic level input that when taken high sets all four outputs low. DIS high overrides all other inputs. When

DIS is taken low the outputs are controlled by the other inputs. The pin can be driven by signal levels of 0V to 15V (no

9

AHB

A High-side Bootstrap supply. External bootstrap diode and capacitor are required. Connect cathode of bootstrap

diode and positive side of bootstrap capacitor to this pin.

10

AHO

A High-side Output. Connect to gate of A High-side power MOSFET.

11

AHS

A High-side Source connection. Connect to source of A High-side power MOSFET. Connect negative side of bootstrap

capacitor to this pin.

12

13

ALO

A Low-side Output. Connect to gate of A Low-side power MOSFET.

14

BLO

B Low-side Output. Connect to gate of B Low-side power MOSFET.

15

BHS

B High-side Source connection. Connect to source of B High-side power MOSFET. Connect negative side of bootstrap

capacitor to this pin.

16

BHO

B High-side Output. Connect to gate of B High-side power MOSFET.

HIP4082