Intersil Corporation HIP9021 Datasheet
HIP9021
PRELIMINARY
August 1996
Features
• 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. . . . . . . -40
o
Applications
• Portable Battery Operated Electric Drills
• Controller for Small DC Electric Motors
• Torque/Drive Controller for Inductive Loads
• Intelligent MOSFET Drive
Ordering Information
TEMP.
PART NUMBER
HIP9021IB -40 to +85 8 Ld SOIC M8.15
RANGE (oC) PACKAGE
N-Channel MOSFETs in Motor Control Systems
C to +85oC Range
Portable Battery Drive/Torque Controller for
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 control 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 determined 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 current reaches an adjustable limit set at the TORQUE input,
the drive of the Power MOSFET is disabled.
The system control components include 2 adjustable potentiometer controls and 2 capacitors for the operating frequency 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.
PKG.
NO.
Pinout
HIP9021IB
(SOIC)
TOP VIEW
DRAIN
1
GND
OSC
2
3
4
TRIGGER
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
8
V
DD
7
GATE
6
DELAY
5
TORQUE
1
File Number 4055
Block Diagram
HIP9021
V
BATT
V
DD
+
DRAIN
TORQUE
LEVEL SET
TORQUE
TRIGGER
SPEED
CONTROL
+
-
OSCILLATOR
HIP9021
CONTROL
& LOGIC
GC
+
DELAY
GATE
OSC
GND
2
HIP9021
Absolute Maximum Ratings Thermal Information
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +16V
Input Voltage. . . . . . . . . . . . . . . . . . . . . . . GND -0.3V to VCC +0.3V
Maximum Current, IDD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50mA
Maximum Transient Reverse Current, IR (10s). . . . . . . . . . . . -50mA
Operating Conditions
Typical Power Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . .7.5V
Operating Voltage Range . . . . . . . . . . . . . . . . . . . . . . . +5V to +15V
Operating Temperature Range. . . . . . . . . . . . . . . . . -40oC to 150oC
Typical Oscillator Frequency. . . . . . . . . . . . . . . . . . . . . . . . . . . 5kHz
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation
of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
Thermal Resistance (Typical, Note 1) θJA (oC/W)
SOIC Package. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Maximum Storage Temperature Range . . . . . . . . . .-65oC to 150oC
Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150oC
Maximum Lead Temperature (Soldering 10s). . . . . . . . . . . . . 300oC
(Lead Tips Only)
Electrical Specifications V
DD
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
DC Supply Current I
OSC Source Current +I
OSC Sink Current -I
OSC Threshold Voltage V
OSC Trigger Voltage V
TRIGGER Input Leak Current I
TORQUE Input Leak Current I
DELAY Current at 1V I
DELAY Current at 2V I
DELAY Threshold Voltage V
DRAIN Input Resistance R
DRAIN Current I
GATE Output Source Current I
GATE Output Voltage V
GATE Output Slew Rate V
= 7.5V, Figure 1 Test Circuit, Table 1 Conditions, TA = +25oC Unless Otherwise Specified
DD
OSC
OSC
OSC(TH)
OSC(TR)
TRIGGER
TORQUE
DELAY1
DELAY2
DELAY(TH)
DRAIN
DRAIN
GATE
GATE
GATE(S/R)
Measured in Typical Application Circuit,
Duty Cycle = 50%, See Figure 2
0.1 1.2 3.1 mA
19 25 32 µA
-32 -25 -19 µA
4.75 4.95 5.25 V
2.30 2.45 2.65 V
- 0.02 1.5 µA
- 0.02 1.5 µA
1.5 3.4 6 µA
13250 mA
1.8 1.9 2 V
150 260 350 kΩ
1 1.7 4.6 mA
10 18 - mA
6.5 7.4 - V
-10- V/µs
DELAY Output Framed Pulse
Duty Cycle
FP/DC Gate Duty Cycle = 50%;
V
TORQUE
= GND; V
DRAIN
= V
GATE;
DELAY =10kΩ to GND, Ref er to Figure 1
DELAY Output Framed Pulse Delay, V
GATE
to V
DELAY
Typical Oscillator Frequency f
FP/DLY
OSC
for the Test circuit and Timing Diagram of
the DELAY Output Pulse Frame.
TA = 25oC - 5 - kHz
TA = -40oC - 7.2 - kHz
TA = 85oC - 3.6 - kHz
NOTES:
1. θJA is measured with the component mounted on an evaluation PC board in free air.
3
-44- %
-3- %
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