DC Brushless Motor Driver IC PT-30DFT H - Bridge Driver Applications Package: SOP8 Single coils DC brushless motor. DC 3.0V~18V. 2 O2 3 RD 4 *** 1 H E SOP 8 L 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 O1 GND PT30DFT Features 8 H+ 7 VDD 6 H- 5 FG D e C A A2A1 L b Pin Description SYMBOLS Input devices Hall IC Specifications DIMENSIONS IN MILLIMETERS(mm) Name Pin O1 1 First output pi n 0.30 GND 2 DC ground P 1.45 - O2 3 Second output pin O 0.41 0.51 0.19 0.20 0.25 RD 4 Rotation Detector(Alarm) O 4.80 4.85 4.95 FG 5 Frequency Generation O H- 6 Hall element input( -) I VDD 7 DC power supply P H+ 8 Hall element input( +) I MIN NOM MAX A 1.47 1.60 1.73 A1 0.10 - A2 - B 0.33 C D E 3.81 3.91 3.99 H 5.79 5.99 6.20 E - 1.27 - L 0.38 0.71 1.27 Description Type O Absolute Maximum Ratings (Ta = 25 C) Symbol Parameter Maximum supply voltage V Conditions max DD Ratings Units 18 V mW Allowable power dissipation Pd 650* Operating temperature Ta -30 ~ +100 Storage temperature Ts -55 ~ +150 C Output current I 0ut Continoue 400 mA Peak 600 mA O C O * 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 Symbol Test Condition Min. Typ. Max. Units Supply Voltage VDD Output low-level Voltage VOL IO=200mA Output High-level Voltage VOH IO=200mA Output Breakdown Voltage VBV 18 22 30 V Input offset voltage VOS -6 0 6 mV Supply Current IDD 3 10 mA FG/RD flow-in Current 3 0.4 18 V 0.5 V Vcc-0.5 Vcc-0.4 Output open IFG/IRD Pull-high resistor is 470ohm@12V 25 FG/RD Supply Voltage mA 12 FG Frequency V 30 V Same with Hall input signal Truth Table H+ H- State O1 O2 FG RD H L Rotate H L H L L H Rotate L H L L H L Lock L L H H L H Lock 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 Lock detected rotate 0.3sec H-/ H + driving 0.3sec On Driver 2.1sec shutdown Off 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 OSC H+ OP CMP Fan Lock Detection Lock Timing Control Driver Timing Control H-Bridge Driver O1 O2 FG H- FG RD RD (Alarm) Gnd Fig. 2. Driver IC Architecture Ver 1.5 -3- Date:Jan. 2002 PT-30DFT Application circuits/ Single coil IC input * Hall Single coil VCC D0 R0 R4 7 Z0 Hall IC 6 8 loading H- Vcc O1 1 O2 3 RD FG 4 H+ R1 Gnd R2 R3 5 2 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 input * Double coil VCC D0 R0 com R4 7 Z0 Hall IC 6 8 R1 H- loading Vcc O1 1 O2 3 RD FG 4 H+ Gnd R2 R3 5 2 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 R4 7 Hall IC Z0 8 6 R1 R6 H+ Vcc O1 1 O2 3 RD FG 4 HGnd 5 R7 option C1 C2 2 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