HIP4080A(1995) Ver la hoja de datos (PDF) - Intersil

Número de pieza

componentes Descripción

Fabricante

HIP4080A
(Rev.:1995)

80V/2.5A Peak, High Frequency Full Bridge FET Driver

Intersil 

HIP4080A

Pin Descriptions

PIN

NUMBER SYMBOL

DESCRIPTION

1

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

strap diode and positive side of bootstrap capacitor to this pin. Internal charge pump supplies 30µA out of this

pin to maintain bootstrap supply. Internal circuitry clamps the bootstrap supply to approximately 12.8V.

2

HEN High-side Enable input. Logic level input that when low overrides IN+/IN- (Pins 6 and 7) to put AHO and BHO

drivers (Pins 11 and 20) in low output state. When HEN is high AHO and BHO are controlled by IN+/IN- inputs.

The pin can be driven by signal levels of 0V to 15V (no greater than VDD). An internal 100µA pull-up to VDD will

hold HEN high, so no connection is required if high-side and low-side outputs are to be controlled by IN+/IN-

inputs.

3

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 greater than VDD). An internal 100µA pull-up to VDD will hold DIS high if this pin is not driven.

4

VSS

Chip negative supply, generally will be ground.

5

OUT OUTput of the input control comparator. This output can be used for feedback and hysteresis.

6

IN+

Noninverting input of control comparator. If IN+ is greater than IN- (Pin 7) then ALO and BHO are low level out-

puts and BLO and AHO are high level outputs. If IN+ is less than IN- then ALO and BHO are high level outputs

and BLO and AHO are low level outputs. DIS (Pin 3) high level will override IN+/IN- control for all outputs. HEN

(Pin 2) low level will override IN+/IN- control of AHO and BHO. When switching in four quadrant mode, dead

time in a half bridge leg is controlled by HDEL and LDEL (Pins 8 and 9).

7

IN-

Inverting input of control comparator. See IN+ (Pin 6) description.

8

HDEL High-side turn-on DELay. Connect resistor from this pin to VSS to set timing current that defines the turn-on delay

of both high-side drivers. The low-side drivers turn-off with no adjustable delay, so the HDEL resistor guarantees

no shoot-through by delaying the turn-on of the high-side drivers. HDEL reference voltage is approximately 5.1V.

9

LDEL Low-side turn-on DELay. Connect resistor from this pin to VSS to set timing current that defines the turn-on delay

of both low-side drivers. The high-side drivers turn-off with no adjustable delay, so the LDEL resistor guarantees

no shoot-through by delaying the turn-on of the low-side drivers. LDEL reference voltage is approximately 5.1V.

10

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

strap diode and positive side of bootstrap capacitor to this pin. Internal charge pump supplies 30µA out of this

pin to maintain bootstrap supply. Internal circuitry clamps the bootstrap supply to approximately 12.8V.

11

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

12

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

bootstrap capacitor to this pin.

13

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

14

ALS

A Low-side Source connection. Connect to source of A Low-side power MOSFET.

15

VCC

Positive supply to gate drivers. Must be same potential as VDD (Pin 16). Connect to anodes of two bootstrap

diodes.

16

VDD

Positive supply to lower gate drivers. Must be same potential as VCC (Pin 15). De-couple this pin to VSS (Pin 4).

17

BLS

B Low-side Source connection. Connect to source of B Low-side power MOSFET.

18

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

19

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

bootstrap capacitor to this pin.

20

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

5

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