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DC Brushless Motor Driver IC
H - Bridge Driver
Applications
Single coils DC brushless motor. DC 3.0V~18V.
O1 1 8 H+ VDD HFG
PT-30DFT
Package: SOP8
Features
Single-phase full-wave driver Motor lock protection and automatic restart Connectable direct to Hall element Built-in hysteresis comparator Frequency Generation output Rotate Detection (Alarm) output Low power consumption and high driving efficiency
SOP 8 L
PT30DFT
GND
2
7 6 5
***
H E
O2 RD 3 4
D
e
A1 2A
SYMBOLS MIN 1.47 0.10 0.33 0.19 4.80 3.81 5.79 0.38
A
C
b
Pin De scriptio n Name O1 GND O2 RD FG HVDD H+ Pin 1 2 3 4 5 6 7 8 Description
NOM 1.60 1.45 0.41 0.20 4.85 3.91 5.99 1.27 0.71 MAX 1.73 0.30 0.51 0.25 4.95 3.99 6.20 1.27
L
Type O P O O O I P I
DIMENSIONS IN MILLIMETERS(mm)
Input devices
Hall IC
A A1 A2 B C D E H E L
First output pi n DC ground Second output pin Rotation Detector(Alarm) Frequency Generation Hall element input( -) DC power supply Hall element input( +)
Specifications
Absolute Maximum Ratings (Ta = 25 C)
Parameter
Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Output current
Symbol
VDD
max
Conditions
Ratings
18
Units
V mW
O
Pd Ta Ts I0ut
Continoue Peak
* 650
-30 ~ +100 -55 ~ +150 400 600
C C
O
mA mA
* On 50mm x 50mm x 1.6mm glass epoxy board
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 1.5
-1-
Date:Jan. 2002
PT-30DFT
Electrical Characteristics Characteristic Supply Voltage Output low-level Voltage Output High-level Voltage Output Breakdown Voltage Input offset voltage Supply Current FG/RD flow-in Current FG/RD Supply Voltage FG Frequency Same with Hall input signal Symbol Test Condition VDD VOL VOH VBV VOS IDD Output open IO=200mA IO=200mA Min. 3 0.4 Vcc-0.5 Vcc-0.4 18 -6 22 0 3 25 12 30 30 6 10 Typ. Max. Units 18 0.5 V V V V mV mA mA V
IFG/IRD Pull-high resistor is 470ohm@12V
Truth Table H+ H L H L HL H L H State Rotate Rotate Lock Lock O1 H L L L O2 L H L L FG H L H H RD L L H H
Lock Protection
In order to protect the motor, the driver IC will be shutdown to drive the coil when the motor is locked over 0.3 seconds. Then, it restarts to drive the motor after 2.1 seconds. Figure 1 shows the timing diagram between the hall input signal and driver's output state.
lock
0.3sec H-/ H + driving 0.3sec On Driver Off 2.1sec shutdown
Lock detected
rotate
RD FG t
Fig 1. Lock Protection
Ver 1.5
-2-
Date:Jan. 2002
PT-30DFT
Rotation Frequency and Detector This driver IC outputs the FG and RD signal for some special application. For FG application, the driver IC will generate square wave to indicate the motor rotation frequency. For RD application, the driver IC will output a high signal to indicate the stop of the motor and a low signal to indicate the normal operation of the motor. (See Fig. 1)
Pre-Amplifier This driver IC integrates signal amplifier and the hysteresis comparator in this chip. The hysteresis comparator uses the hysteresis characteristic to eliminate noisy oscillations at output of the comparator. The driver IC architecture block diagram is shown in Fig. 2.
Vcc
Regulator
H+
OSC
Fan Lock Detection Driver Timing Control
Lock Timing Control
O1
OP
H-
CMP
H-Bridge Driver
FG RD
O2
FG
RD
(Alarm)
Gnd
Fig. 2. Driver IC Architecture
Ver 1.5
-3-
Date:Jan. 2002
PT-30DFT
Application circuits/ Single coil
* Hall IC input Single coil
R0 Z0 Hall IC R4
7 6
VCC D0
H- Vcc O1 O2 H+ Gnd
2
loading
1 3 4 5
R2 R3
8
R1
RD FG
GND R0, R1, R4: 10K R2, R3: open drain loading Z0: depend on VCC, if VCC=12V, Vz=12V~18V.The zener diode is optional.
Hall IC * Doubleinput coil
R0 Z0 Hall IC R4
7 6
VCC D0
com
HH+
Vcc O1 O2
loading
1 3 4 5
R2 R3
8
R1
Gnd
2
RD FG
GND R0, R1, R4: 10K R2, R3: open drain loading Z0: Zener diode, if VCC=12V, Vz=12V~18V.The zener diode is optional.
Note: R0, R1, R4 is 10K ohm D0 is general diode, 1/2W Z0 is 12V~18V zener diode, 1/2W Com point is floating for double coil
Ver 1.5
-4-
Date:Jan. 2002
PT-30DFT
12V(high driving capability)/24V/48V Application circuits
VCC 12V/24V/48V D0 R5 R0 Z0 Hall IC R4
7 8
H+ Vcc O1 O2 HGnd
2
R6
1 3 4 5
6
R1
RD FG
R7 C1 C2
option
GND Capcitor is optional for back e.m.f. protection. R0, R1, R4: 10K R2, R3: open drain loading R5: 560,1/2W(for24V); 1.8K,1W(for48V); none( for 12V) Z0: Zener diode, Vz=12V~18V.
Note:
D0: general diode 1/2W, (opti onal) Z0: Vz=12V zener diode 1/2W R5: 560,1/2W(for 24V) ; 1. 8K,1W(for 48V); none(for 12V ) R0,R1,R4 : 10K R6,R7 : 2K, 1/8W(for 0.4A output); 1K, 1/8W(f or 0.8A output), 560, 1/4W (for 1.5A output) Q1, Q2: depend on driving capability requirement Ex. 2222A(40V, 0.6A, 0.3W ), 2SD1782/SSTA06(80V, 0.5A, 0.3W ), 2SD1768S(80V, 1A, 0.5W), 2SC4132(120V, 2A 0.5W), 2SD1760(50V, 3A 1W)... .. C1,C2 : 2.2uF, 50V(optional), or s uitable Vz Zener diode
Specifications of any and all PROLIFIC products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. PROLIFIC Technology Inc. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any and all PROLIFIC products described or contained herein fall under strategic products (including services) controlled under the Foreign Exchange and Foreign Trade Control Law of Taiwan, such products must not be exported with our obtaining export license from the Ministry of international Trade and Industry in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of PROLIFIC Technology Inc. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to theDelivery Specification for the PROLIFIC product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. PROLIFIC believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
Specifications and information herein are subject to change without notice.
Ver 1.5
-5-
Date:Jan. 2002

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