SITI FD177 Single coil brushless dc motor drivers with soft-switching( 2.0 to 6.5 volts ) Datasheet

FD177
Version
Issue Date
File Name
Total Pages
: A.003
: 2008/06/10
: SP-FD177-A.003.doc
:8
Single Coil Brushless DC Motor Drivers
with Soft-Switching
( 2.0 to 6.5 Volts )
SILICON TOUCH TECHNOLOGY INC.
新竹市科學園區展業一路九號七樓之一
9-7F-1 Prosperity Road I Science-Based Industrial Park
Hsinchu, Taiwan 300, R.O.C.
Tel:886-3-5645656 Fax:886-3-5645626
點晶科技股份有限公司
FD177
SILICON TOUCH TECHNOLOGY INC.
General Specifications
FD177 is a single coil DC brushless motor driver IC with soft-switching,
locked protection, thermal shut down protection circuit, power polarity
reverse protection and frequency generator. The driver is optimal for single
coil fan applications with less external components.
Features and Benefits
z
z
z
z
z
z
z
z
Support single-phase full wave Brushless DC Motor Driver
Built-in Hall sensor input signal amplifier
Low voltage startup (VDD=2.0V)
High driving capability
Lock detection and automatic self-restart
Power polarity reverse protection
Thermal shut down protection circuit
Thin, compact, highly reliable package (TSOT-28)
Pin Description
O1
O2
VSS
VDD
FGR
NC
HP
HN
Package : TSOT-28
NO. NAME DESCRIPTION
1
O1
Output driving & sinking pin 1
2
VSS
Ground pin
3
FGR Frequency generator
4
HP
Hall sensor in+
5
HN
Hall sensor in6
NC
None connection
7
VDD Power supply pin
8
O2
Output driving & sinking pin 2
FD177
Version:A.003
Page:1
點晶科技股份有限公司
FD177
SILICON TOUCH TECHNOLOGY INC.
Absolute Maximum Ratings
( Unless otherwise noted, VDD=5V, TA = 25 °C )
Characteristic
Symbol
Rating
Unit
Supply Voltage
VDDM
6.5
V
Output Current
IOUT
500
mA
Output Current at Locked (TSOT-28)
IOL1
1
A
Maximum FGR Output Current
IFGR_MAX
10
mA
Maximum FGR Output Voltage
VFGR_MAX
6.5
V
Operating Temperature Range
TOPR
-30 ~ 85
°C
Storage Temperature Range
TSTG
-65 ~ 150
°C
Power Dissipation (TSOT-28)
PD
568
mW
Thermal Resistance, Junction to Ambient
θJA_TSOT28
220
°C/ W
Thermal Resistance, Junction to Case
θJC_TSOT28
92
°C/ W
FD177
Version:A.003
Page:2
點晶科技股份有限公司
FD177
SILICON TOUCH TECHNOLOGY INC.
Electrical Characteristics
( Unless otherwise noted, VDD=5V, TA = 25 °C )
Limit
Characteristic
Sym.
Condition
Unit
Min.
Typ.
Max.
2
5
6.5
V
3
5
mA
Operation Voltage
VDD
Supply current
Icc
Maximum Output
Voltage Range
VOH
IOUT = 300 mA
4.5
4.65
-
V
Minimum Output
Voltage Range
VOL
IOUT = 300 mA
-
0.35
0.5
V
FG Output
Low Voltage
VFGROL
IFGR= 3 mA
-
0.25
0.4
V
Hall Amplifier Offset
VOffSet
-9
0
9
mV
GIO
45
48
51
dB
ms
Input-Output Gain
Automatic self-restart
Lock detection
on Time
Lock detection
off Time
FD177
TON
-
110
150
190
TOFF
-
0.75
1.05
1.35 Sec
Version:A.003
Page:3
點晶科技股份有限公司
FD177
SILICON TOUCH TECHNOLOGY INC.
Application Circuit
Output Waveform
HP
HN
O1
O2
Truth Table
FD177
Hall input
O1
O2
HP > HN
H
L
HP < HN
L
H
Version:A.003
Page:4
點晶科技股份有限公司
FD177
SILICON TOUCH TECHNOLOGY INC.
Application Notes
The device is operated within wide supply voltage range from 2.0 to 6.5
Volts. The design, specifications and performance have been optimized
for 5V brushless DC motor applications.
The output driver node O1/O2 will be “turned to drive/sink” when V(HP) >
V(HN). Similarly, the output O1/O2 will be “turned to sink/drive” when
V(HP) < V(HN).
There is no need of external timing capacitor for lock protection and
auto-restart function. For 5V application, the drivers will be shut down
roughly 1 second after the motor is locked. When the drivers have been
shut down, the automatic self-restart circuit will try to power up the drivers
every 1 second until lock is released.
There is no requirement of protection diode for power reverse fault in
normal applications. The power polarity reverse protection circuit is
built-in.
The connection of the capacitor 1uF between VDD and GND and the
capacitor 0.1uF between Hall sensor HP and HN will increase the
system stability when motor is rotating.
The power dissipated by the IC varies widely with the supply voltage, the
output current, and loading. It is important to ensure the application does
not exceed the allowable power dissipation of the IC package. The
recommended motor driver power dissipation versus temperature is
depicted as follows:
600
TSOT-28
500
400
)
W
m
(
n
o
i
t
a
p
i
s
s
i
D
r
e
w
o
P
300
200
100
0
0
25
50
75
100
125
150
Ambient Temperature ( C )
FD177
Version:A.003
Page:5
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
FD177
Package Specifications
FD177 : TSOT-28
VARIATION(ALL DIMENSIONS SHOWN IN MM)
SYMBOL
MIN.
NOM.
MAX.
A
0.750
0.800
A1
0
0.050
A2
0.700
0.750
0.775
b
0.220
0.380
c
0.100
0.200
D
2.800
2.900
3.000
E
2.600
2.800
3.000
E1
1.500
1.600
1.700
e
0.650 BSC
e1
1.950 BSC
L
0.370
0.450
0.600
L1
0.600 REF
L2
0.250 BSC
R
0.100
R1
0.100
0.250
θ
0o
4o
8o
o
o
θ1
4
10
12o
FD177
Version:A.003
Page:6
點晶科技股份有限公司
SILICON TOUCH TECHNOLOGY INC.
FD177
The products listed herein are designed for ordinary electronic applications,
such as electrical appliances, audio-visual equipment, communications devices
and so on. Hence, it is advisable that the devices should not be used in
medical instruments, surgical implants, aerospace machinery, nuclear power
control systems, disaster/crime-prevention equipment and the like. Misusing
those products may directly or indirectly endanger human life, or cause injury
and property loss.
Silicon Touch Technology, Inc. will not take any responsibilities regarding the
misusage of the products mentioned above. Anyone who purchases any
products described herein with the above-mentioned intention or with such
misused applications should accept full responsibility and indemnify. Silicon
Touch Technology, Inc. and its distributors and all their officers and employees
shall defend jointly and severally against any and all claims and litigation and
all damages, cost and expenses associated with such intention and
manipulation.
FD177
Version:A.003
Page:7
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