1
November 1996
HIP4081
80V/2.5A Peak, High Frequency
Full Bridge FET Driver
Features
Independently Drives 4 N-Channel FET in Half Bridge
or Full Bridge Configurations
Bootstrap Supply Max Voltage to 95V
DC
Drives 1000pF Load at 1MHz in Free Air at 50
o
C with
Rise and Fall Times of Typically 10ns
User-Programmable Dead Time
On-Chip Charge-Pump and Bootstrap Upper Bias
Supplies
DIS (Disable) Overrides Input Control
Input Logic Thresholds Compatible with 5V to 15V
Logic Levels
Very Low Power Consumption
Applications
Medium/Large Voice Coil Motors
Full Bridge Power Supplies
Class D Audio Power Amplifiers
High Performance Motor Controls
Noise Cancellation Systems
Battery Powered Vehicles
Peripherals
U.P.S.
Description
The HIP4081 is a high frequency, medium voltage Full
Bridge N-Channel FET driver IC, available in 20 lead plastic
SOIC and DIP packages. The HIP4081 can drive every pos-
sible switch combination except those which would cause a
shoot-through condition. The HIP4081 can switch at fre-
quencies up to 1MHz andssssss is well suited to driving
Voice Coil Motors, high-frequency Class D audio amplifiers,
and power supplies.
For example, the HIP4081 can drive medium voltage brush
motors, and two HIP4081s can be used to drive high perfor-
mance stepper motors, since the short minimum “on-time”
can provide fine micro-stepping capability.
Short propagation delays of approximately 55ns maximizes
control loop crossover frequencies and dead-times which
can be adjusted to near zero to minimize distortion, resulting
in rapid, precise control of the driven load.
A similar part, the HIP4080, includes an on-chip input com-
parator to create a PWM signal from an external triangle
wave and to facilitate “hysteresis mode” switching.
See Application Note AN9325 for HIP4081, Intersil Answer-
FAX, (407) 724-7800, document #99325. Intersil web home
page: http://www.semi.intersil.com
Similar part HIP4081A includes undervoltage circuitry which
does not require the circuitry shown in Figure 30 of this data
sheet.
Pinout
HIP4081
(PDIP, SOIC)
TOP VIEW
Ordering Information
PART
NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NUMBER
HIP4081IP
-40 to 85
20 Lead Plastic DIP
E20.3
HIP4081IB
-40 to 85
20 Lead Plastic SOIC
M20.3
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
BHB
BHI
DIS
V
SS
BLI
ALI
HDEL
AHI
LDEL
AHB
BHO
BLO
BLS
V
DD
BHS
V
CC
ALS
ALO
AHS
AHO
File Number
3556.7
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
www.intersil.com or 407-727-9207
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Copyright
Intersil Corporation 1999