ETC PT301E

DC Brushless Motor Driver IC
PT301EA, PT301ED
PWM Speed Controller
Applications
Package: SOT-28
Single coil DC brushless motor.
Traditional double coil DC Brushless motor
DC 1.5V~6.5V.
FG(Divide 1) for Four Poles fan
FG(Divide 2) for Eight Poles fan
D
Features
1
2
GND
3
O1
4
EAYWW
HE
E
SOT-28
O2
GND
8
FG
7
PWM
6
VDD
5
HIN
Y: Year
WW: Week
E:PT-301E
A:Divide 1
D:Divide 2
A
PWM speed control
Motor lock protection
Built-in protection circuit for transient output
Frequency Generation output
Low power dissipation and high driving efficiency
Ultra-low start voltage
e
L
Pin Description
Name
Pin
MIN
NOM
MAX
VCC
6
A2
0.70
0.80
0.90
Gnd
2/3
A1
0.00
-
0.15
A
1.00
1.10
1.30
O1
b
0.25
0.30
0.40
O2
C
0.10
0.15
0.20
D
2.80
2.90
E
1.60
HE
SYMBOLS
Input Devices
Hall IC
Specifications
C
A2
A1
b
Unit: mm
DIMENSIONS IN MILLIMETERS
Description
Type
DC power supply
P
DC ground
G
4
First output pin
O
1
Second output pin
O
Hin
5
Hall IC signal input
I
3.00
PWM
7
PWM control input
I
1.80
2.00
FG
8
Tacho meter output(Frequency
O
3.00
2.60
2.80
e
-
0.65
-
L
0.10
-
0.60
Generation)
Pin Description
P: Power, G: Ground, O: Output, I: Input
Absolute Maximum Ratings (Ta = 25 C)
Symbol
Parameter
Maximum supply voltage
Conditions
V CC max
Ratings
Unit
6.5
V
*1
mW
Allowable power dissipation
Pd
350
Operating temperature
Ta
-30 ~ +100
Storage temperature
Ts
-55 ~ +150
Output current
I 0ut
O
C
O
400*2
max
C
mA
*1:Reduced by 3.4mW for each increase in Ta of 1 over 45
When mounted on a 50mm x 50mm x 1.6mm glass epoxy board.
*2:Should not exceed Pd.
Any and all PROLIFIC products described or contained herein do not have specifications that can handle applications that
require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications
whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your
PROLIFIC representative nearest you before using any PROLIFIC products described or contained herein in such
applications.
PROLIFIC assumes no responsibility for equipment failures that result from using products at values that exceed, even
momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products
specifications of any and all PROLIFIC products described or contained herein.
PROLIFIC TECHNOLOGY INC.
7F, No.48, Sec.3, Nan Kang Rd., Nan Kang, Taipei, 115, Taiwan
Ver. 1.2E
-1-
Date:Sept. 2002
DC Brushless Motor Driver IC
PT301EA, PT301ED
Recommanded operating conditions
Parameter
Supply Voltage
Symbol
M i n.
Typ .
Max.
Units
V DD
1.5
5
6.5
V
Electrical Characteritics(Ta = 25 C,Vdd=5V)
Parameter
Output Voltage
Symbol
Test Condition
Low RL=10@5V
High RL=10@5V
Output breakdown
voltage
Supply Current
Driving Current
FG supply voltage
FG flow-in current
FG output voltage
Hin Input Voltage
Min.
Typ.
0.48
Max. Units
0.5
V
VDD-1.1 VDD-1
V
11
12
V
Output open (O1, O2 no load)
10
RL=10@5V
360
379
396
mA
mA
RL=12@5V
316
330
342
mA
RL=15@5V
266
276
285
mA
RL=30@5V
150
153
155
mA
RL=47@5V
99
100
101
mA
RL=100@5V
48
49
11
50
12
10
0.3
VDD
0.5
100
VDD
0.5
100
500
mA
V
mA
V
V
V
uA
V
V
uA
KHz
0.25
1.75
0.33
2.28
sec
sec
Pull-high resistor is 470ohm@5V
Pull-high resistor is 470ohm@5V
High
Low
VDD -1.2
High
Low
VDD -1.2
GND
Hin input current
PWM Input Voltage
GND
PWM Input current
PWM Operation
Frequency
Motor lock timing Driving +/-30%
Stop +/-30%
Ver. 1.2E
0.17
1.22
-2-
Date:Sept. 2002
PT301EA, PT301ED
DC Brushless Motor Driver IC
Rotation Frequency
The PT301Ex driver IC generates a FG signal for frequency calculation. In
general application, the Fan IC will generate a signal to indicate the rotation
frequency of different for each motor. When the motor is stopped, the FG
signal will pull high to indicate the stop of the motor was stopped.
Digital PWM Speed Control
PT301Ex applies the Pulse Width Modulation (PWM) to control motor speed.
PT301Ex can use the PWM input pin to control the motor speed. When the
PWM is high, the driver IC will drive the motor coil. On the other hand, when
the PWM is low, the driver IC will stop driving the motor coil.
PWM
HIN
O1
O2
High
High
Low
High
Low
High
Low
High
Low
Low
Low
Low
Low
Low
Lock Protection
In order to protect the motor and reduce the power
sipation.
dis
When the
motor contacts the outside force, the Fan IC when stop
ivingdrthe coil after
the motor is lock over 0.25 seconds and restar
ts the motor after stop the
motor 1.75 seco
nds. Figure
-2 shows the timing diagram betw
een the hall
input signal and driver state. Whenever the motor stops
er 0.25
ov second by
outside force, the Fan IC will shutdow
n to stop the driving output, and after
1.75 seconds, the Fan IC will turn onain.
ag
Hin
0.25sec
On
Driver
Off
0.25sec
1.75sec
T
Fig 2. Lock Protection
Ver. 1.2E
-3-
Date:Sept. 2002
PT301EA, PT301ED
DC Brushless Motor Driver IC
The driver IC architecture block diagram is showed as Figure-3
Vcc
Fan Lock
Detection
O1
Lock Timing
Control
O2
Driver Timing
Control
Hin
Driver
FG
FG
PWM Speed
Control
PWM
Gnd
Fig. 3. Driver IC Architecture
Application circuits
1. Signal coil
R1
Hall
IC
CLK Duty
Control
Vcc O1
Hin
O2
PWM
Gnd
FG
R2
C1
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
R1: Depend on the Hall IC spec.
R2: 470 ohm ~ 4.7K ohm
C1: 0.22uf(Optional)
Ver. 1.2E
-4-
Date:Sept. 2002
PT301EA, PT301ED
DC Brushless Motor Driver IC
Application circuits
2. Double coil
R1
Hall
IC
Vcc O1
Hin
O2
PWM
Gnd
CLK Duty
Control
R2
FG
C1
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
R1: Depend on the Hall IC spec.
R2: 470 ohm ~ 4.7K ohm
C1: 0.22uf
(Optional)
R1
Hall
IC
Vcc O1
Hin
PWM
Gnd
CLK Duty
Control
R2
O2
FG
C1
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
R1: Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
C1: 0.22uf
(Optional)
Ver. 1.2E
-5-
Date:Sept. 2002
PT301EA, PT301ED
DC Brushless Motor Driver IC
Application circuits
High driving application:
Ra
Hall
IC
Vcc
Hin
R1
O1
R3
C1
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
O2
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
R2
PWM
FG
Gnd
CLK Duty
Control
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
Ra: Depend on the Hall IC Specification
R1, R2: Depend on driving current
R3: 470 ohm ~ 4.7K ohm
C1: 0.22uf (optional)
V supply
R0
V reference
5V zener
Hall
IC
Ra
Vcc
R1
O1
Hin
R2: 470 ohm ~ 4.7K ohm
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
O2
CLK Duty
Control
R3
R1:Depend on the Hall IC Specification
PWM
C1
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
R2
FG
R1:Depend on the Hall IC Specification
Gnd
R2: 470 ohm ~ 4.7K ohm
C2
C3
R1:Depend on the Hall IC Specification
R1:Depend on the Hall IC Specification
R2: 470 ohm ~ 4.7K ohm
R2: 470 ohm ~ 4.7K ohm
Ra: Depend on the Hall IC Specification
R0: Depend on the power dissipation and the driving ability
R1, R2: Depend on the external NPN driving ability
R3: 470 ohm ~ 4.7K ohm
C1: 0.22uf (optional)
C2,C3: 0.22u~5u (optional)
Ver. 1.2E
-6-
Date:Sept. 2002
PT301EA, PT301ED
DC Brushless Motor Driver IC
D
2
GND
3
O1
4
FG
7
PWM
6
VCC
5
HIN
Y: Year
WW: Week
EDYW W
E:PT301E
A:Divide 1
D:Divide 2
8
EDYW W
GND
EAYWW
1
HE
E
SOT-28
O2
A
L
DIMENSIONS IN MILLIMETERS
NOM
MAX
A2
0.70
0.80
0.90
A1
0.00
-
0.15
A
1.00
1.10
1.30
b
0.25
0.30
0.40
C
0.10
0.15
0.20
D
2.80
2.90
3.00
E
1.60
1.80
2.00
HE
2.60
2.80
3.00
e
-
0.65
-
L
0.10
-
0.60
Ver. 1.2E
Pin Description
Name Pin
VCC
6
Gnd
2/3
O1
4
O2
1
Hin
5
PWM
7
FG
8
Description
Type
DC power supply
P
DC ground
G
First output pin
O
Second output pin
O
Hall IC signal input
I
PWM control input
I
Tacho meter output(Frequency
O
Generation)
Pin Description
P: Power, G: Ground, O: Output, I: Input
-7-
EDYW W
MIN
EDYW W
e
Unit: mm
SYMBOLS
C
A2
A1
b
3000pcs./Reel
Date:Sept. 2002