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Intersil Corporation - Portable Battery Drive/Torque Controller for N-Channel MOSFETs in Motor Control Systems

Numéro de référence HIP9021IB
Description Portable Battery Drive/Torque Controller for N-Channel MOSFETs in Motor Control Systems
Fabricant Intersil Corporation 
Logo Intersil Corporation 





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HIP9021IB fiche technique
HIP9021
PRELIMINARY
August 1996
Portable Battery Drive/Torque Controller for
N-Channel MOSFETs in Motor Control Systems
Features
Description
• MOSFET Driver and DC Motor Controller
• Torque Control and Overload Protection
• Battery Power Supply . . . . . . . . . . . . . . . . +5V to +15V
• BiMOS IC with Low Operating Current
- Maximum Supply Current . . . . . . . . . . . . . . . . .1.5mA
- Maximum Input Leakage Currents . . . . . . . . . . 1.5µA
• 500µA Maximum Supply Current
• 1µA Maximum Input Leakage Currents
• Typical Oscillator Frequency . . . . . . . . . . . . . . . . . 5kHz
• Power-On-Reset Control
• 10mA Drive Capability for Gate Output
• Operating Temperature . . . . . . . -40oC to +85oC Range
Applications
• Portable Battery Operated Electric Drills
• Controller for Small DC Electric Motors
• Torque/Drive Controller for Inductive Loads
• Intelligent MOSFET Drive
Ordering Information
PART NUMBER
HIP9021IB
TEMP.
RANGE (oC)
PACKAGE
-40 to +85 8 Ld SOIC
PKG.
NO.
M8.15
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.
Pinout
HIP9021IB
(SOIC)
TOP VIEW
DRAIN 1
TRIGGER 2
GND 3
OSC 4
8 VDD
7 GATE
6 DELAY
5 TORQUE
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
1
File Number 4055

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