FD128MX [FEELING]
Single Phase Smart DC Motor Driver IC;
| 型号： | FD128MX |
| 厂家： | 
Feeling Technology |
| 描述： | Single Phase Smart DC Motor Driver IC |
| 文件： | 总11页 (文件大小：234K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
General Description
The FD128 series is a direct PWM drive IC with single-phase and bipolar drive. The
IC is suitable for variable speed control Fan of PC.
Features
Single-phase coil driver, applied to fan or motor.
Lock function built-in and a lock detect output signal (RD).
Thermistor or PWM modes are available for speed control.
An external capacitor (CO) is necessary for lock function.
An external capacitor (CP = 47pf) for internal 25KHz saw-tooth wave
Thermal Shutdown built-in.
Hall IC input (INN) can use as rotation output (FG)
Internal minimum speed
Function Block Diagram
RD
VL
Lock Detect
CO
VDD
Regulator
SO
NO
Controller
INN
TSD
Oscillation
Circuit
VSET
CP
GND
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.
Rev0.6 Aug. 01, 2008
P.1
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
Pin Assignment
FD128NX
FD128MX
Absolute Maximum Ratings
Parameter
Symbol
VCCmax
IOUTmax
VOUTmax
VSETmax
VRD
Condition
Rating
20
1.0
Unit
V
A
V
V
V
mA
W
mA
mA
mA
℃
Supply Voltage
Output Current
Output Supply Voltage
VSET input Range
20
19
20
20
Vcc-1.0V
RD output supply voltage
RD output current
IRDmax
Pdmax
Icon
For exposed pad
Maximum power dissipation
Output continous current
Outpur lock current
Outpur Peak current
Thermal shutdown protect
Operating Temperature
Storage Temperature
Junction Temperature
Thermal resistor
2.4
500
900
1000
>150
-20 to 125
150
150
10.8
54
Ick
IPeak
<100us
Chip inner thermal
Tsd
Topr
℃
Tstg
℃
TJ
℃
θJC
℃/W
℃/W
Thermal resistor
θJA
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.
Rev0.6 Aug. 01, 2008
P.2
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
Recommended operating condition at Ta=25oC
Parameter
Supply Voltage
Symbol
VCC
Conditions
Rating
4.5 to 20
Unit
V
VSET input range
INN input Range
VSET
INN
0 to VCC-1.0
0 to VCC
V
V
Electrical Characteristics at Ta=25 oC ; Vcc=12V
Parameter
Symbol
Conditions
Rotation mode
Lock mode
Min Typ Max Unit
ICC1
ICC2
20
12
3.9
1.0
22
mA
mA
V
Operating Current
CO pin high level
CO pin low level
CO charge current I1
CO charge current I2
CO discharge current
CO lock voltage
OFF/ON ratio
Output lower side saturation
voltage
VCOH
VCOL
ICOC1 VCO=0.5V
ICOC2 VCO=1.0V
ICOD
VCOK
Toff/Ton
VOL
V
uA
uA
uA
V
35
VCO=4V
1.6
3.6
10
IO=200mA
IO=200mA
0.2
V
V
Output upper side saturation
voltage
VOH
0.9
0.2
RD pin low voltage
RD pin leakage current
INN pin high voltage
INN pin low voltage
CP pin high level
CP pin low level
CP charge current
CP discharge current
Start-up Voltage
VRDL IRD=5mA
IRDL
INH
INL
VCPH
VCPL
ICPOC VCO=0.5V
ICPD
Vst
V
uA
V
VRD=12
10
2.4
3.5
0.8
V
V
V
uA
uA
V
3.9
1.8
8.3
8.3
VCO=4V
Minimum Speed
15
%
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.
Rev0.6 Aug. 01, 2008
P.3
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
Vset voltage level vs. Motor speed(RPM)
PWM mode
Min. Speed
(constant speed)
Full Speed
Speed control
(constant speed)
(available speed control)
VCC-1.0
0
1.8
3.6
Vset (Voltage)
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.
Rev0.6 Aug. 01, 2008
P.4
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
Motor Speed vs. CP pin connect PWM signal operating Duty Cycle
Max.
PWM
100
90
Max.
80
70
60
50
40
30
20
10
0
RPM
(%)
100
95
0
10
20
30
40
50
60
70
80
90
PWM Operating (Duty Cycle)
Motor Speed vs. Vset pin connect PWM signal Operating Duty cycle
Max.
PWM
100
90
Max.
RPM
80
70
60
50
40
30
Min.
PWM
20
15
10
Min.
RPM
0
(%)
90 95 100
0
10 15 20
30
40
50
60
70
80
25KHz PWM operating (Duty Cycle)
Two kinds use the outside PWM signal to control the difference of way of
rotational speed of the fan to prove:：
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.
Rev0.6 Aug. 01, 2008
P.5
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
1. Input PWM signal by Vset pin
The slowest rotational speed is limited, it is unable to totally stop operating.
2. Input PWM signal by CP pin
The slowest rotational speed is not limited , can totally stop operating
Note: Circuit of using that please watch the application circuits.
Truth Table
INN
CP
CO
NO
L
H
SO
H
L
FG
OFF
L
RD
L
L
Mode
Rotation
H
L
H
Un-lock
H
L
H
L
L
L
OFF
L
H
OFF
L
OFF
L
L
L
OFF
OFF
Re-circulation
Lock Protect
OFF
OFF
H
Lock
OFF
Note: CP-H = CP > VSET, CP-L = CP < VSET
Application Notes
DC=12V
*6
CM =1uF
*1
CL =2.2uF
VDD(6)
RT1 =20K
FS177
EXT. PWM Signal(mode1)
R =4.7K
VSET(8)
Hall IC input
(FG signal output)
*7
INN(1)
RTH =10K
NO(3)
SO(5)
EXT. PWM Signal(mode2)
RS = 50
*8
RS = 50
CO(7)
CP(2)
*8
CS =1uF
CS =1uF
*3
GND(4)
CP =47pF
*4
CO =1uF
Opitional
FD128NX Appilcation circuit
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.
Rev0.6 Aug. 01, 2008
P.6
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
DC=12V
*6
*2
CM =1uF
*5
RRD =10K
VDD(7)
VL(6)
RD(2)
RD Output
FS177
Hall IC Input
(FG Signal Output)
INN(1)
NO(3)
SO(5)
*1
RS = 50
*8
RS = 50
*8
CO(8)
CL =2.2uF
CS =1uF
CS =1uF
*4
GND(4)
CO =1uF
Opitional
FD128MX Application Circuit
*1
*2
Recirculation Capacitance
CL (2.2uF) capacitor is for PWM drive and kick back absorption, especially when
the diode used.
Thermal Dissipation Handle Diode
To decrease the Output Transistor Voltage drop, then improve the thermal handle
capability.
*3
*4
*5
*6
PWM Oscillator frequency setting capacitor
Setting the CP = 47pF to get the 25KHz PWM frequency.
Lock shutdown time setting capacitor
CO value decides the time of lock function to turn on or turn off drivers.
Rotation Detect pull-up Resistor
For RD open collector structure, low for rotation mode and high for lock mode.
VDD stability capacitor
When the (*1,*2) does not exist, the CM capacitor replace the CL to absorption the
VDD spike and work as the re-circulation capacitor.
Thermistor Resistor
*7
*8
For speed control runs at the PWM mode.
Output overshoot hold RC
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.
Rev0.6 Aug. 01, 2008
P.7
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
Function Description
I.
Minimum Speed Mode
When VSET voltage larger than the voltage of the internal minimum speed setting
voltage ( VSL). Then the fan would sustain about 15% duty ratio to make the fan
working on lowest speed.
If the VSET is left open, then the fan also enters the minimum speed mode.
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.
Rev0.6 Aug. 01, 2008
P.8
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
II.
PWM Control mode(Vset pin connect DC voltage)
When VSET is between VSL and VCPL. Then the output would are turn on at VSET <
V (CP) and turn off at VSET > V (CP). The CP frequency decided the Switch Period
and the result of VSET compared to V (CP) had the duty ratio.
III. Full Speed Mode
When VSET is lower than VCPL, then the fan would enter the full speed mode.
IV. Thermistor Mode
The VSET pin can use the Thermistor to produce the thermal control of system, and
saving the power around the room temperature.
V. External 25KHZ input control
The signal is suggested to send into CP. The result is similar as that VSET must be
left open to use the VSL. So, the input voltage must be over the VSL to turn on drivers.
VI. Lock Mode
When the fan stop and the capacitor (CO) continue to be discharged until the VCOK
point. Then the fan should enter the lock mode to turn off the low-side drivers. This
action would save the power consumption and avoid the over-heating philosophy. It
would be released until the VCOL point. The rotation detect signal (RD) would set to
High at lock mode.
VII. Other
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.
Rev0.6 Aug. 01, 2008
P.9
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
Package Outline
Sop8： (exposed pad)
P.S. Under Exposed pad, the PCB layout
rather to be uncovered copper and
connected to GND or Floating
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.
Rev0.6 Aug. 01, 2008
P.1
0
FD128MX/FD128NX
Single Phase Smart DC Motor Driver IC
Technology
ORDER INFORMATION
Part Number
Operating Temperature
-20 oC to +125 oC
Package
SOP8(E.P)
SOP8(E.P)
FD128MX-LF
FD128NX-LF
-20 oC to +125 oC
E.P.: exposed pad
Product Part Number Vs. Function Table
Rotation-
Auto lock-
Thermal-
detection
(RD)
Part Number
PWM
shutdown restart
shutdown restart
◎
◎
◎
◎
◎
FD128MX-LF
FD128NX-LF
◎
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.
Rev0.6 Aug. 01, 2008
P.1
1
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