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부품번호 UM2640
기능 TWO-PHASE UNIPOLAR DC BRUSHLESS MOTOR PRE-DRIVER IC
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UM2640 데이터시트, 핀배열, 회로
UNISONIC TECHNOLOGIES CO., LTD
UM2640
Preliminary
TWO-PHASE UNIPOLAR DC
BRUSHLESS MOTOR
PRE-DRIVER IC
„ DESCRIPTION
UTC UM2640 is a 2-phase pre-driver IC for unipolar DC brushes
motors. It features high voltage bipolar technology so that the driver
works up to 48V. High voltage operation delivers more power and
improves power supply efficiency. Therefore, it is suitable for high
voltage fan motor applications.
„ FEATURES
* Wide supply voltage range of 4V~55V
* Absolute Maximum Voltage 60V
* Lock protection.
Auto-restart when the motor lock is undone.
* Lock Alarm Output Terminal
„ ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UM2640L-SO8-R
UM2640G-SO8-R
UM2640L-SO8-T
UM2640G-SO8-T
Package
SOP-8
SOP-8
CMOS IC
Packing
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2011 Unisonic Technologies Co., Ltd
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UM2640 pdf, 반도체, 판매, 대치품
UM2640
Preliminary
CMOS IC
„ ABSOLUTE MAXIMUM RATING (TA=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
Hall Input Voltage Range
VCC 60 V
VIH
-0.3~VCC
V
Output Current
IOUT 30 mA
Lock Alarm Output Voltage
Hall Input Differential Voltage
VOLA
VIHD
60 V
2V
Lock Alarm Output Current
IOLA
20 mA
Power Dissipation
Operating Temperature
PD
TOPR
375
-40~85
mW
°C
Storage Temperature
TSTG
-55~150
°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.
„ ELECTRICAL CHARACTERISTICS (VCC=48V, TA = 25°C)
PARAMETER
Operating Supply Voltage Range
Operating Current
Hall Input Hysterisis Range
Hall Amplifier Input Bias Current
Hall Input Common Mode Voltage
Output Voltage
Output Leak Current
Lock Alarm Output Voltage
Lock Alarm Leak Current
Ct Charge Current
Ct Discharge Current
Charge/Discharge Current Ratio
Ct H Level Cense Voltage
Ct L Level Cense Voltage
Auto Protection Release ON Time
Auto Protection Release OFF Time
SYMBOL
VCC
ICC
VHYS
IB
VICM
VOUT
ILEAK
VLA
ILA-LEAK
ICHG
IDCHG
ICHG/IDCHG
VCtH
VCtL
TON
TOFF
TEST CONDITIONS
VCC=24V
VCC=48V
IOUT=10mA
VCC=60V
Lock Alarm ON, ILA=5mA
VLA=60V
VCt=1.5V
VCt=1.5V
Ct=0.47µF
Ct=0.47µF
MIN TYP MAX UNIT
4.0 48.0 55.0 V
3.0
3.8
4.0
4.8
mA
8 20 32 mV
0.5 1.0 µA
1.5 Vcc-2 V
Vcc-1.5
V
5 µA
0.5 V
10 µA
3.8 µA
0.75 µA
4.0 5.5 8.0
2.2 2.5 2.8 V
0.6 0.7 0.8 V
0.25 s
1.25 s
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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UM2640 전자부품, 판매, 대치품
UM2640
Preliminary
CMOS IC
„ APPLICATION INFORMATION(Cont.)
7. Design of C2:
Lock Protection Function, consists of Motor Lock Detection and Auto Resume Function, is a safety feature to
protect a motor and a driver circuit from fatal destruction in case of motor halt.
Motor Lock Detection detects motor halt due to irregular load conditions and then cuts motor driving current for
safety operation. When Lock Detection is activated; Lock Alert Out (LA: Pin 3) goes to L.
A value of C2 determines Lock detection time (Ton) and Auto Resume Time (Toff).
Lock detection time (Ton) is given by:
TON
=
C2
Vch -
Ic
Vcl [sec]
Where C2 is 0.47uF:
TON
=
0.47
× 10 -6
×
2.5 - 0.7
3.8 × 10-6
= 0.22[sec]
Auto Resume Time (Toff) is given by:
TOFF
=
C2
Vch - Vcl
Idc
[sec]
Where C2 is 0.47uF:
TOFF
=
0.47
× 10 -6
×
2.5
0.75
- 0.7
× 10 -6
= 1.13[sec]
A typical value of C2 is either 0.47uF or 1uF depending on a motor.
Lock Protection
Lock Alert Out (LA: Pin 3) is a open collector output and R3 is a pull up resister. A typical value of R3 is 10k.
It must be noted that Lock Alert Out stays an H state during few hundred milliseconds from power up as shown in
the picture below.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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부품번호상세설명 및 기능제조사
UM2640

TWO-PHASE UNIPOLAR DC BRUSHLESS MOTOR PRE-DRIVER IC

Unisonic Technologies
Unisonic Technologies

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