HIP9021 Intersil Corporation, HIP9021 Datasheet

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HIP9021

Manufacturer Part Number
HIP9021
Description
Portable Battery Drive/Torque Controller for N-Channel MOSFETs in Motor Control Systems
Manufacturer
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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HIP9021 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

... GATE DELAY Typical Oscillator Frequency f OSC NOTES measured with the component mounted on an evaluation PC board in free air. JA HIP9021 Thermal Information Thermal Resistance (Typical, Note 1) +0.3V SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . CC Maximum Storage Temperature Range . . . . . . . . . .-65 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150 Maximum Lead Temperature (Soldering 10s 300 ...

Page 4

... The framed pulse duty cycle and delay, in percent, are measured in reference to the gate pulse which is set at 50% duty cycle. The Delay output framed pulse delay is one-half of the difference of the gate pulse width minus delay output framed pulse width. FIGURE 1. ELECTRICAL CHARACTERISTICS TEST CIRCUIT FOR SIGNAL FUNCTIONS OF THE HIP9021 TABLE 1. SWITCH POSITIONS OF FIGURE 1 FOR ELECTRICAL CHARACTERISTIC TESTING ...

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

... FIGURE 3. DETAILED LOGIC DIAGRAM OF THE PORTABLE DRIVE/TORQUE CONTROLLER FOR N-CHANNEL POWER MOSFETS SHOWING THE DRAIN AND TORQUE, THE GATE CONTROL LOGIC AND THE TRIGGER (SPEED) CONTROL. HIP9021 A torque effect condition exists when 80% of the DRAIN sig- nal is higher than the TORQUE input level set voltage of the potentiometer ...

Page 7

... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see web site http://www.intersil.com HIP9021 M8.15 (JEDEC MS-012-AA ISSUE C) ...

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