FD1257H [FEELING]
Smart motor driver with embedded Hall sensor;
| 型号： | FD1257H |
| 厂家： | 
Feeling Technology |
| 描述： | Smart motor driver with embedded Hall sensor |
| 文件： | 总10页 (文件大小：317K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FEELING
FD1257H
Smart motor driver with embedded Hall sensor
Features
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
Motor driver with integrated Hall sensor
Lock-shutdown protection & auto-restart function
Precise magnetic switching thresholds
“Soft-switch” phase-switching technique to reduce vibration and acoustic noise
Thermal shutdown protection
Halogen Free
Available in SIP-4L packages
For 12V systems
General Description
FD1257H is a single coil motor driver with embedded Hall sensor. It integrates the motor driver with the Hall sensor,
which simplifies the PCB(printed circuit board) design and make the fabrication of small-size motors possible.
Lock-shutdown and auto-restart function keeps the motor from being over-heated and restarts the motor after being
locked.
“Soft-switch” phase-switching technique is used to reduce the vibration and acoustic noise.
Thermal-shutdown protection ensures the motor driver to operate under specified temperature ranges.
All the protection mechanisms mentioned above combine to provide a complete protecting scenario for the motor
system, keep the motor system from possible damages and guarantee correct operations.
Block Diagram
Bias Generator
Hall Plate
Oscillator
Chopper amplifier
Coil Driver
Digital control logics
Power-On
Reset
Figure.1
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Rev1.7 Nov. 21, 2008
P.1
FEELING
Pin Connection
FD1257H
Marking Distinguish
1257H
1257H
YMV-XX
YMV-XX
1
2
3
4
Lot Number
Mass Production Version
Half month (ex:A,B ~ X)
Year (ex:2008
8)
Figure.2
Figure.3
Pin Descriptions
Name
VDD
NO
I/O
P
FD1257H
Description
1
2
3
4
Positive power supply
Driver output
Driver output
Ground
O
SO
O
VSS
G
Legend: I=input, O=output, I/O=input/output, P=power supply, G=ground
Functional Descriptions
Refer to the block diagram (Figure.1), FD1257H is composed of the following building blocks:
ꢀ
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 to achieve correct operation as soon as the power is
ready.
ꢀ
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.
ꢀ
Digital control logics
ꢁ
ꢁ
Hall sensor part – generates controlling signals for the Hall sensor.
Coil driver part – generates controlling signals for the Coil driver.
Rev1.7 Nov. 21, 2008
P.2
FEELING
FD1257H
Absolute Maximum Ratings
Values
Typ.
Parameter
Symbol Conditions
Unit
min.
-20
max.
105
150
16
Operating Temperature
Storage Temperature
DC Supply Voltage
Supply Current
TOP
TST
-
-
-
-
℃
℃
-40
VDD
IDD
V
12
mA
mA
mA
mA
℃
Continuous Current
Hold Current
IO(CONT)
IO(HOLD)
IO(PEAK)
TJ
400
800
900
180
1250
Peak Current
<100µs
Junction temperature
Power Dissipation
Thermal Resistance
Thermal Resistance
Magnetic Flux Density
IR-Reflow Lead Temperature
PD
SIP-4L
SIP-4L
SIP-4L
mW
℃/W
℃/W
Gauss
℃
θJC
55
θJa
100
B
Unlimited
260
10sec
Power Dissipation Curve
Pd (mW)
1250
1020
780
550
300
o
C
105
70
0
0
25
50
75
100
125
150(TSHUT)
o
Temp. (
)
C
255 ± 5 oC
10 ± 1 sec
150 ± 10 oC
90 ± 30 sec
2~5 oC /sec
2~5 oC /sec
SECOND
IR-ReFlow Soldering Condition
Rev1.7 Nov. 21, 2008
P.3
FEELING
FD1257H
Recommended Operating Conditions
Values
typ.
Parameter
Symbol
Conditions
Unit
min.
3
max.
14
Supply Voltage
Operating Temperature Range
VDD
TA
-
-
V
-20
85
℃
Electrical Characteristics VDD=12V, TA=25℃ (unless otherwise specified)
Values
Parameter
Symbol
Conditions
Unit
min.
typ.
8
max.
Average Supply Current(no load)
On resistance (Rpmos+Rnmos)
Thermal Shutdown Threshold
Locked Rotor Period
IDD
RDSON
TSHUT
TON
mA
Ohm
℃
3
150
0.4
2.8
s
Locked Rotor Period
TOFF
s
Magnetic Characteristics
Values
typ.
Parameter
Symbol
Conditions
Unit
min.
5
max.
40
Operate Points
Release Points
BOP
BRP
20
G
G
-5
-20
-40
Driver output vs. Magnetic Pole
Parameter
Test Conditions
NO
SO
North pole
South pole
B < Brp
B > Bop
High
Low
Low
High
Note: The magnetic pole is applied facing the branded side of the package
Hysteresis Characteristics
V
V
B
B
Brp
Bop
Brp
Bop
NO
SO
Rev1.7 Nov. 21, 2008
P.4
FEELING
FD1257H
Performance Graphs
Figure.4
Figure.6
Figure.8
Figure.5
Figure.7
Figure.9
Rev1.7 Nov. 21, 2008
P.5
FEELING
FD1257H
Lock shutdown – Restart Timing Description:
(TON
)
(TOFF
)
Channel4: VDD pin current waveform
Channel3: Output (SO pin) voltage waveform
Channel1: Output (NO pin) voltage waveform
Note: The North pole (B > Bop) is applied facing the branded side of the package.
Rev1.7 Nov. 21, 2008
P.6
FEELING
FD1257H
Application Circuit Reference
1257H
YMV-XX
VDD
D1
R1
C1
Coil
D2
Figure.10
Note:
Must use least C1=1uF(electrolytic) capacitor & R1=5~10 Ohm for the decoupling between VDD
and VSS and place the capacitor as close to the IC as possible (D2(OPTION )= 16V zener diode).
Rev1.7 Nov. 21, 2008
P.7
FEELING
FD1257H
Package Dimension (Unit: mm)
SIP-4L(Halogen Free)
5.23±0.12
1.55±0.25
0.73±0.03
4.2±0.1
1.75mm
1.85mm
Sensor location
0.457±0.025
0.38±0.05
0.39±0.05
1.27±0.025
Rev1.7 Nov. 21, 2008
P.8
FEELING
FD1257H
Packing Specification
BAG & BOX DIMANSION
160 mm
100 mm
FTC Logo
BAG LABEL
BOX
LABEL
630 mm
BAG
190 mm
INSIDE BOX
400mm
650mm
CARTON
LABEL
FTC Logo
CARTON
Packing Quantity Specifications
1000 EA / 1 BAG
25 BAGS / 1 INSIDE BOX
4 INSIDE BOXES / 1 CARTON
Rev1.7 Nov. 21, 2008
P.9
FEELING
FD1257H
Order Information
Part Number
Operating Temperature
Package
Description
Marking
FD1257H-G1
SIP-4L
±20G (B)
-
-20 ℃ to +85 ℃
Rev1.7 Nov. 21, 2008
P.10
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