DC Brushless Motor Driver IC PT-30DFA Single- Phase Full-Wave Linear Drive APPLICATIONS PACKAGE: MSOP8 Single coils DC brushless motor. DC 2.0V~18V. D H+ FEATURES HE E M S O P-8 SYMBOLS SPECIFICATIONS 2 7 VDD 6 O2 5 GND H- 3 O1 4 e L Pin Description Unit: mm HALL IC or HALL ELEMENT FG C A A1 b INPUT DEVICES 8 DFA *** NC Single-phase full-wave linear driver (BTL linear output driver) Switch noise elimination Motor lock protection and automatic restart Connectable direct to Hall element Built-in hysteresis comparator Frequency Generation output Low power consumption and high driving efficiency 1 DIMENSIONS IN MILLIMETERS MIN NOM MAX A1 0.00 - 0.20 A 0.76 0.86 0.97 Name Pin Description Type H+ 1 Hall element input(+) I NC 2 NC - b 0.15 0.20 0.30 H- 3 Hall element input(-) I C 0.13 0.15 0.23 O1 4 First output pin O D 2.90 3.0 3.10 GND 5 DC ground P E 2.90 3.0 3.10 HE 4.80 4.90 5.10 O2 6 Second output pin O e - 0.65 - VDD 7 DC power supply P L 0.40 0.53 0.66 FG 8 Frequency Generation O Absolute Maximum Ratings (Ta = 25C) Symbol Parameter Maximum supply voltage V Conditions max DD Ratings Units 18 V mW Allowable power dissipation Pd 450* Operating temperature Ta -30 ~ +100 Storage temperature Ts -55 ~ +150 C Output current I 0ut 350 mA O C O Continoue * 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 -1- Date:Jan. 2002 PT-30DFA Electrical Characteristics Characteristic Symbol Test Condition Supply Voltage VDD Output low-level VOL IO=200mA VOH IO=200mA Min. Typ. 2.0 0.4 Max. Units 18 V 0.5 V Voltage Output High-level VCC-0.5 VCC-0.4 V Voltage Output Breakdown VBV 18 VOS -6 22 30 V 6 mV 10 mA Voltage Input offset voltage Supply Current IDD Output open 3 FG flow-in Current IFG Pull-high resistor is 25 mA 470ohm@12V FG Supply Voltage 30 FG Frequency V Same with Hall input signal Pre-Amplifier Gain VG 50 dB Truth Table H+ H- State O1 O2 FG RD H L Rotate L H L L L H Rotate H L H 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 0.3seconds. Then, it restarts to drive the motor after 2.1seconds. 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 O1/O2 FG t Fig 1. Lock Protection -2- Date:Jan. 2002 PT-30DFA 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 BTL linear Driver O1 O2 NC H- FG FG Gnd Fig. 2. Driver IC Architecture 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. 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Specifications and information herein are subject to change without notice. -3- Date:Jan. 2002 PT-30DFA APPLICATION CIRCUITS/ Single coil *Hall element input VCC D0 R4 R0 7 1 C0 loading H+ Vcc O1 4 O2 6 Hall 3 H- 2 NC R2 C1 R1 FG Gnd C2 8 5 GND R0=R1:depend on hall device Spec. R0=R1 is recommended R2: open drain loading C0: optional decoupling capacitor 0.1uF C1,C2: 1uF~2.2uF capacitor * Hall IC input VCC D0 R0 R4 7 Hall IC C0 R1 1 loading H+ Vcc O1 4 O2 6 3 H- 2 NC C1 Gnd FG R2 C2 8 5 GND R0, R1, R4: 10K R2: open drain loading C0: optional decoupling capacitor 0.1uF C1,C2: 1u~2.2uF capacitor -4- Date:Jan. 2002