HIP9021IB INTERSIL [Intersil Corporation], HIP9021IB Datasheet

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HIP9021IB

Manufacturer Part Number
HIP9021IB
Description
Portable Battery Drive/Torque Controller for N-Channel MOSFETs in Motor Control Systems
Manufacturer
INTERSIL [Intersil Corporation]
Datasheet
PRELIMINARY
August 1996
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
Features
• MOSFET Driver and DC Motor Controller
• Torque Control and Overload Protection
• Battery Power Supply . . . . . . . . . . . . . . . . +5V to +15V
• BiMOS IC with Low Operating Current
• 500 A Maximum Supply Current
• 1 A Maximum Input Leakage Currents
• Typical Oscillator Frequency . . . . . . . . . . . . . . . . . 5kHz
• Power-On-Reset Control
• 10mA Drive Capability for Gate Output
• Operating Temperature . . . . . . . -40
Applications
• Portable Battery Operated Electric Drills
• Controller for Small DC Electric Motors
• Torque/Drive Controller for Inductive Loads
• Intelligent MOSFET Drive
Ordering Information
Pinout
HIP9021IB
PART NUMBER
- Maximum Supply Current . . . . . . . . . . . . . . . . .1.5mA
- Maximum Input Leakage Currents . . . . . . . . . . 1.5 A
RANGE (
-40 to +85
TEMP.
o
|
C)
Copyright
8 Ld SOIC
PACKAGE
©
o
Intersil Corporation 1999
C to +85
TRIGGER
DRAIN
GND
OSC
N-Channel MOSFETs in Motor Control Systems
o
C Range
M8.15
1
2
3
4
PKG.
NO.
Portable Battery Drive/Torque Controller for
HIP9021IB
TOP VIEW
(SOIC)
1
Description
The HIP9021IB is a dedicated Power MOSFET driver which
drives a DC motor. As a system, motor speed is controlled
while controlling torque. The primary application is drive con-
trol for portable drills while providing overload protection.
The main function of the HIP9021IB is to produce a pulse
width modulated square wave signal which drives the gate of
an N-Channel Power MOSFET. The duty-cycle is deter-
mined by the setting of an external potentiometer at the
TRIGGER (speed control) input. As the TRIGGER voltage
level is decreased the duty-cycle of the square wave and the
speed of the motor is increased.
The torque of the motor is limited by the voltage level sensed
at the drain of the external Power MOSFET. When the cur-
rent reaches an adjustable limit set at the TORQUE input,
the drive of the Power MOSFET is disabled.
The system control components include 2 adjustable poten-
tiometer controls and 2 capacitors for the operating fre-
quency and torque delay control. A fixed or battery supply
voltage in the range of 5V to 15V may be used.
The HIP9021IB is provided in a small outline plastic package
for a compact surface mount to a ceramic substrate. The
surface mount assembly can be fit directly into the trigger of
a portable electric drill.
8
7
6
5
V
GATE
DELAY
TORQUE
DD
HIP9021
File Number
4055

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HIP9021IB Summary of contents

Page 1

... DC motor system, motor speed is controlled while controlling torque. The primary application is drive con- trol for portable drills while providing overload protection. The main function of the HIP9021IB is to produce a pulse width modulated square wave signal which drives the gate of an N-Channel Power MOSFET. The duty-cycle is deter- mined by the setting of an external potentiometer at the TRIGGER (speed control) input ...

Page 2

Block Diagram TORQUE TORQUE LEVEL SET TRIGGER SPEED CONTROL HIP9021 DRAIN DELAY + CONTROL & - LOGIC GATE OSC OSCILLATOR HIP9021 GND 2 V BATT ...

Page 3

Absolute Maximum Ratings Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

V DRAIN 1nF 2V V TORQUE 5V 1nF 5V V TRIGGER 7.5V 22nF V GATE V DELAY NOTE: The timing diagrams relate to the delay output framed pulse and show the time duration of the ...

Page 5

... NOTE: The value chosen for the torque level set pot is dependent on the type of power MOSFET and motor characteristics. The TRIGGER is a combined SW/Speed Control function. Motor speed increases as the TRIGGER voltage decreases. Speed control range: 2.35V (Min) < V FIGURE 2. TYPICAL OPERATING CIRCUIT SHOWING THE HIP9021IB AS AN N-CHANNEL MOSFET DRIVER IN A PORTABLE BATTERY ELECTRIC DRILL APPLICATION HIP9021 DESCRIPTION > ...

Page 6

Functional Description Oscillator The Oscillator triangle waveform is generated by the charge and discharge of a 1nF external capacitor connected to the OSC pin. The OSC terminal has a source and sink drive from a current mirror which delivers 25 ...

Page 7

Small Outline Plastic Packages (SOIC) N INDEX 0.25(0.010) H AREA E - SEATING PLANE - - 0.10(0.004 0.25(0.010 NOTES: 1. Symbols are defined in the “MO ...

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