MA7151FCPA [MPOWER]
Low Noise & Low voltage Single-Coil Fan/Motor Driver;
| 型号： | MA7151FCPA |
| 厂家： | 
Major-Power |
| 描述： | Low Noise & Low voltage Single-Coil Fan/Motor Driver |
| 文件： | 总11页 (文件大小：484K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MA7151F/R
Low Nois e & Low voltage
Single-Coil Fan/Motor Driver
GENERAL DESCRIPTION
The MA7151 is an integrated Hall sensor with H-Bridged output driver designed for
brushless DC motor applications. The device includes an on-chip Hall sensor for magnetic
sensing, an amplifier that amplifies the Hall voltage, a comparator to provide switching
hysteresis for noise rejection, a bi-directional drivers for sinking and driving large current load.
To avoid coil burning, rotor-lock shutdown detection circuit shut down the output driver if
the rotor is blocked and then the automatic recovery circuit will try to restart the motor. This
function repeats while rotor is blocked. Until the blocking is removed, the motor recovers
running normally.
FEATURES
- On-Chip High sensitivity Hall-effect Sensor
- Operating Voltage: 1.8V to 5.5V
- H-Bridge Output Drivers for Single Coil
- Thermal Shutdown and Reverse voltage Protection
- Low Output Switching Current Noise
- -40°C to 125°C Operating Temperature
- Rotor-locked shutdown and automatically restart function
- For 3V and 5V DC Motor / FAN systems
- Low Profile SOT23-6L ,TSOT23-6L , SOT23-6F and TDFN 2X2-6L Package
BLOCK DIAGRAM
VDD
Rotor-locked
shutdown and
automatically restart
Regulator
OUT1
H-bridge
MOS
Driver
Hall
Plate
Control
Logic
Amp.
OUT2
Thermal
shutdown
PWM
Control
FG/RD
GND
PWM
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
1/11
MA7151F/R
PIN ASSIGNMENT
The package of MA7151; the pin assignment is given by:
Name
Description
Frequency Generation /
(Top View)
PWM
6
VDD
5
OUT1
FG/RD OUT2 GND
4
4
FG/RD Rotation Detection
(open drain output)
GND Ground.
OUT2 Output 2
OUT1 Output 1
6
5
GND
2
SOT
1
3
1
2
3
VDD OUT1
TDFN-6L(2x2)
PWM
VDD Supply Voltage
PWM PWM Signal Input Terminal.
GND
FG/RD
OUT2
RDER/MARKING INFORMATION
Order Information
Top Marking(SOT)
ID Code: Internal
H b Y W X
Week: 01~26(A~Z)
27~52(a~z)
Year : 6 = 2016
MA7151F=Hb,MA7151R=Hc
X X X
MA7151
Package Type
C: SOT23-6L
CT:TSOT23-6L A : Taping
CP:SOT23-6F
Packing
Blank: Tube
F=FG
R=RD
Top Marking (TDFN)
MA7151F=Hb,MA7151R=Hc
H b
Y W X
D2:TDFN2X2-6L
ID Code: Internal
Week: 01~26(A~Z)
27~52(a~z)
Year : 6 = 2016
A BSOLUTE MAXIMUM RATINGS (at TA=25°C)
Characteristics
Symbol
VCC
Rating
-7 to 7
Unit
V
Supply Voltage
Magnetic Flux Density
B
Unlimited Gauss
500
Continuous
Hold
Peak (start up)
Output Current
IO
800
1000
mA
Power Dissipation
Storage Temperature Range
Thermal Resistance from Junction to case
Thermal Resistance from Junction to ambient
PD
TSTG
θJC
550
-65 to +150
110
mW
°C
°C/W
°C/W
θJA
225
Recommended Operating Conditions (TA=25 °C)
Supply Voltage
Junction Temperature
VCC
TJ
TO
1.8 to 5.5
150
-40 to 125
V
°C
°C
Operating Temperature
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
2/11
MA7151F/R
ELECTRICAL CHARACTERISTICS
(VDD = 5V, TA = +25°C, unless otherwise noted.)
Characteristics
Average Supply Current
Average Supply Current
On resistance(RPMOS+RNMOS)
On resistance(RPMOS+RNMOS)
FG Output Low Voltage
Output Switching Slope Duration
Output Switching Slope Duration
PWM Input H Level
Symbol
IDD
Conditions
3V,No load
5V,No load
Min
Typ
2.2
3.6
0.8
1.0
0.3
200
160
-
Max Units
-
3.5
mA
mA
Ω
IDD
-
5
RDS(ON) 5V,400mA
RDS(ON) 3V,200mA
5V,5mA
-
1.4
-
1.8
Ω
-
0.5
V
TSW 3V
TSW 5V
VPWMH
-
-
uS
uS
V
-
-
0.5VDD
VDD
-
0.14VDD
PWM Input L Level
VPWML
0
0.2
-
V
PWM Input Frequency
Locked Protection On
Locked Protection Off
FPWM
-
30
-
KHz
Sec
Sec
°C
Tlrp-on
0.45
2.7
-
Tlrp-off
-
-
Thermal Shutdown Threshold
Magnetic
TSHUT
150
-
(1mT=10 Gauss)
Operating Point
BOP
5
-50
-
30
-30
60
50
-5
-
Gauss
Gauss
Gauss
Releasing Point
BRP
Hysteresis
BHYS
Note: Guaranteed by design.
Driver output vs. magnetic pole
Characteristics
Test Conditions
OUT1
High
Low
OUT2
North pole
B < Brp
Low
South pole
B > Bop
High
Note: The magnetic pole refer to diagram
V
V
B
B
Brp
0
Bop
Brp
0
Bop
OUT1
OUT2
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
3/11
MA7151F/R
Package Sensor Location Active Area Depth
Package Sensor Location Active Area Depth
PWM VDD OUT1
S
FG/RD OUT2
GND
TDFN
S
SOT
4
6
5
6
5
4
1.0mm
0.6mm
Marking side
0.8mm
0.9mm
Marking side
1
2
3
1
PWM
2
VDD
3
OUT1
N
N
FG/RD GND
OUT2
APPLICATION CIRCUIT
1. SOT(FG)
C1
100nF
Optional
PWM Signal
VDD
PWM VDD OUT1
5
6
4
Coil
1
FG
3
2
10k
GND OUT2
FG
Output
2. TDFN(FG)
VDD
C1
10k 100nF
Optional
FG
Output
OUT2 GND
5
4
FG
6
Coil
1
3
2
PWM
VDD OUT1
PWM Signal
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
4/11
MA7151F/R
PERFORMANCE CHARACTERISTICS
25
50
60
70
80
85
286
130
88
90
264
135
66
95
242
140
44
100
220
150
0
TA (C)
PD (mW)
TA (C)
550 440
105 110
198 176
396
115
154
352
120
132
308
125
110
PD (mW)
Functional Descriptions
Bias generator
The bias generator provides precise, temperature- and process-insensitive bias references for the
analog blocks. These references guarantee proper operation of the IC under all conditions
specified in this specification.
Oscillator
The built-in oscillator provides the clock signal for the digital control logics
Power-on Reset
Used to detect the power-up ramp and reset the digital circuits.
Chopper Amplifier
To achieve a higher magnetic sensitivity the chopper amplifier structure is adopted in this design.
Use of this structure dynamically removes both the offset and flicker noise at the same time.
PWM control
PWM(pulse-width modulation) is used for the speed control. 2 types of PWM input signals can be
used :
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
5/11
MA7151F/R
1. Voltage mode PWM :
Applying a DC voltage to the PWM pin and the MA7151 will generate PWM pulses internally
with the “ON” duty cycle ratio according to the diagram below(Figure.1), which can be utilized
by the user to control the speed of the motor. The rotation speed will be higher if the voltage
applied to the PWM pin is higher.
PWM ON rate
100%
0%
0.14VDD
0.5VDD
Figure.1
2. Pulse mode PWM :
User can also apply PWM pulses directly to the PWM pin. The MA7151 will pass this pulse to the
coil driver with the original duty-cycle ratio.
Note:
(1) While using pulse mode PWM, the “High” Value of the input pulse should be higher than
0.5*VDD and the“Low” value should be lower than 0.14*VDD
(2) The lower-limit for the PWM pulse frequency is 200Hz, and the recommended frequency range
is higher than 30KHz where the PWM input pulses will not generate acoustic noise.
Note. The “PWM” pin contains an internal pull-up resistor so the MA7151 will rotate at full-speed
(100% ON) when this pin is left un-connected(floating).
PWM signal and Standby Mode
This IC would enter standby mode when the PWM input keeps low level for then 30ms(typ.). In
standby mode, it will shutdown amplifier and FG. In standby mode, the lock protection function
doesn’t work, therefore, starting fan is unobstructed when releasing standby mode.
PWM
30ms
disable
Lock protect enable
enable
Soft Switching
MA7151 uses soft switching of the motor coil current during commutation for to minimize audible
switching noise and electromagnetic interference (EMI) to provide a low noise solution.
VDD
Soft
Switching
GND
200us
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
6/11
MA7151F/R
TYPICAL CHARACTERISTICS
VDD5V FG PIN WAVEFORM
VDD5V RD PIN WAVEFORM
Ch1=O1 , Ch2=O2 ,Ch3=FG
Ch1=O1 , Ch2=O2 ,Ch3=RD
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
7/11
MA7151F/R
PACKAGE OUTLINES
1. SOT23-6L
D
C
GAUGE PLANE
L
L1
e
DETAL A
e1
DETAL A
b
Dimensions in Millimeters
Dimensions in Inches
Symbol
Min.
Nom.
Max.
Min.
Nom.
Max.
0.057
0.085
0.051
0.020
0.009
0.122
0.071
0.118
0.024
0.028
A
A1
A2
b
C
D
E1
E
L
L1
e1
e
1.05
0.05
0.90
0.30
0.08
2.70
1.40
2.60
0.30
0.50
-
1.45
2.15
1.30
0.50
0.22
3.10
1.80
3.00
0.60
0.70
0.041
0.002
0.035
0.012
0.003
0.106
0.055
0.102
0.012
0.020
-
-
1.10
-
-
0.043
-
-
-
2.90
1.60
2.80
-
1.114
0.063
0.110
-
0.60
1.90BSC
0.95BSC
0.024
0.075BSC
0.037BSC
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
8/11
MA7151F/R
2. TSOT23-6L
D
b
C
e
e1
y
Dimensions in Millimeters
Dimensions in Inches
Symbol
Min.
-
Nom.
-
Max.
Min.
-
Nom.
-
Max.
0.043
0.004
0.039
0.020
0.008
0.118
0.118
0.067
A
A1
A2
b
C
D
E
E1
e
e1
L
L1
y
1.10
0.10
1.00
0.50
0.20
3.00
3.00
1.70
0.00
0.70
0.30
0.08
2.80
2.60
1.50
-
0
-
0.90
0.40
0.14
2.90
2.80
1.60
0.028
0.012
0.003
0.110
0.102
0.059
0.035
0.016
0.006
0.114
0.110
0.063
0.037 BSC.
0.075 BSC.
0.018
0.024 REF.
-
0.95 BSC.
1.90 BSC.
0.45
0.60 REF.
-
0.30
-
0.60
0.10
0.012
-
0.024
0.004
JEDEC outline: MO-193 AA
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
9/11
MA7151F/R
3. SOT23-6F
D
c
e
e1
b
1.0mm
Dimensions in Millimeters
Dimensions in Inches
Symbol
Min.
Nom.
1.00
0.40
Max.
Min.
Nom.
0.039
-
Max.
A2
b
c
D
E1
E
0.85
0.30
0.08
2.70
1.40
3.90
1.15
0.55
0.22
3.10
1.80
4.25
0.033
0.012
0.003
0.106
0.055
0.153
0.045
0.020
0.009
0.122
0.071
0.167
-
-
2.90
1.60
4.10
1.114
0.063
0.161
0.075BSC
0.037BSC
e1
e
1.90BSC
0.95BSC
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
10/11
MA7151F/R
4. TDFN2X2-6L
D2
D
L
E2
E
Pin 1
b
e
(Top View)
(Bottom
View)
A
A3
SEATING PLANE
(SIDE View)
Dimensions in Millimeters
Dimensions in Inches
Symbol
Min.
0.7
0
Nom.
0.75
0.02
Max.
0.8
0.05
Min.
0.028
0
Nom.
0.03
0.001
Max.
0.031
0.002
A
A1
A3
b
D
D2
E
E2
e
L
0.203 REF.
0.008 REF.
0.011
0.2
0.28
2
1.5
2
0.9
0.35
2.05
1.65
2.05
1.05
0.009
0.077
0.055
0.077
0.031
0.013
0.081
0.063
0.081
0.039
1.95
1.35
1.95
0.75
0.079
0.059
0.079
0.035
0.65 BSC.
0.3
0.026 BSC.
0.012
0.2
0.4
0.008
0.016
Major Power Technology Co., Ltd.
Rev.1.0 Sep.18, 2017
11/11
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