UH477L-G04-K [UTC]
SINGLE PHASE DC MOTOR DRIVE IC; 单相直流电机驱动IC
| 型号： | UH477L-G04-K |
| 厂家： | 
Unisonic Technologies |
| 描述： | SINGLE PHASE DC MOTOR DRIVE IC |
| 文件： | 总6页 (文件大小：150K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
UH477
Preliminary
LINEAR INTEGRATED CIRCUIT
SINGLE PHASE DC MOTOR
DRIVE IC
DESCRIPTION
The UTC UH477 is particularly designed for a single phase DC
motor driver circuit. It includes hall sensor and output coil drivers. The
range of the operating voltage and the operation current is typically
0.3A.
The UTC UH477 is a well performance integrated IC with less
required external components. The high sensitivity of Hall effect
sensor is suitable for motors from mini-type CPU coolers to blowers
and DC fans.
FEATURES
* Operating Voltage Ranges Widely from 3.0V to 30V
* 1 Chip Hall Sensor/Drivers
* Output Thermal Shutdown Protect Circuit
* Output Sink Current up to 300mA
ORDERING INFORMATION
Ordering Number
Lead Free
Package
SIP-4
Packing
Bulk
Halogen Free
UH477L-G04-K
UH477G-G04-K
PIN DESCRIPTION
PIN NO.
PIN NAME
VCC
DESCRIPTION
1
2
3
4
IC Power Supply
NO
Coil driver output is low state during the N magnetic field.
Coil driver output is low state during the S magnetic field.
IC Ground
SO
GND
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UH477
Preliminary
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
1
2
Temperature
Compensated
Current
Voltage
Hall
Latch
Circuit
Regulator
Element
Amplifier
Hysteresis
Control
Pre-Driver
Sensitivity
Control
3
Thermal
Shutdown
4
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UH477
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
30
UNIT
V
VCC Pin Voltage
Peak Current
Output Peak Sink Current Hold Current
Continuous Current
800
mA
mA
mA
mW
mW
°C
IOUT
600
300
TA=25°C
TA=70°C
600
Power Dissipation
PD
450
Junction Temperature
TJ
TJ
+150
0 ~ +85
-65 ~ +150
Operating Junction Temperature
Storage Temperature
°C
TSTG
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
DC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
VCC
TEST CONDITIONS
MIN
3
TYP
MAX UNIT
Supply Voltage
30
30
0.8
14
V
mA
V
Quiescent Supply Current
ICC
VCC=30V, No use pin open
25
VCE(SINK) VCC=14V, IC=200mA
VCE(DRIVE) VCC=14V, IC=200mA
0.55
Output Saturation Voltage
12.5
MIN
V
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
TEST CONDITIONS
RL=820Ω, CL=20pF
TYP
0.5
MAX UNIT
Rise Time
Fall Time
tR
tF
1.0
1.5
0.5
μs
μs
μs
RL=820Ω, CL=20pF
RL=820Ω, CL=20pF
0.5
Switch Time Differential
Δt
1.0
MAGNETIC CHARACTERITICS
A Grade
PARAMETER
Operating Point
Release Point
SYMBOL
MIN
10
-45
TYP
TYP
TYP
MAX
45
-10
UNIT
BOP
BRP
Gauss
B Grade
PARAMETER
Operating Point
Release Point
SYMBOL
BOP
MIN
-65
MAX
65
UNIT
Gauss
BRP
C Grade
PARAMETER
Operating Point
Release Point
SYMBOL
BOP
MIN
-90
MAX
90
UNIT
Gauss
BRP
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UH477
Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
UTC UH477
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UH477
Preliminary
LINEAR INTEGRATED CIRCUIT
APPLICATION CIRCUIT
The Example of Typical Application Circuit
A typical application circuit is shown as follows. The red, yellow, and black wires are the input points of the
motor system: Red--the input of power supply; Yellow--the output of FG; Black--the ground signal. RC is an external
pull-up resistance for the use of measuring FG signal.
The value of RC can be calculated by the transistor saturation voltage (VON), sink current (IC), and off-level
voltage (VC).
VC − VON
RC
=
IC
For example:
VC=+5V for TTL level; IC= 10mA at 0.2V saturation voltage; The safety value of RC=470Ω
There is a reverse protection diode D1 in the circuit. As if the red and black wires reversely connect with the
power source, the current flows through the ground via IC and coils L1 and L2 to power supply. Under such kind of
circumstances the IC and coils are easy to be burned out. From that, this reverse protection diode is necessary in
the design. Meanwhile, an extra voltage drop on the supply voltage should be taken into consideration, which is
caused by the reverse protection diode.
The capacitor C1 is designed to reduce the ripple noise during the transient of the output stages, and its value
is determined by the coil impedance and characteristics.
D1
R wire
VCC
NO
C1
+VC
RC
L1
UH477
Y wire
SO
GND
B wire
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UH477
Preliminary
LINEAR INTEGRATED CIRCUIT
FUNCTIONAL INFORMATION
H-Bridge Transistor Output
In the following figure, the diagram of H-bridge transistors is shown. The single-phase motor rotation is changed
by a switching current of coil L1.
When the magnetic pole is N pole, Q2, Q3, Q5 is shut off and Q1, Q4, Q6 is turn-on, the current flows through
L1 from SO to NO. And when the magnetic pole is S pole, Q1, Q4, Q6 is turn-off and Q2, Q3 is turned on.
The current flows through L1 from NO to SO.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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