Order this data sheet by MC33039/D MOTOROLA SEMICONDUCTOR TECHNICAL DATA ~ - I CLOSED-LOOP BRUSHLESS MOTOR I ADAPTER The MC33039 is a high performance closed-loop speed control adapter specifically designed for use in brush less dc motor control systems. Implementation will allow precise speed regulation without the need for a magnetic or optical tachometer. This device contains three input buffers each with hysteresis for noise immunity, three digital edge detectors, a programmable monostable, and an internal shunt regulator. Also included is an inverteroutput for use in systems that require conversion of sensor phasing. Although this device is primarily intended for use with the MC33034 brushless motor controller, it can be used cost effectively in many other closed-loop speed control applications. @ Digital Detection of Each Input Transition for Improved Low Speed Motor Operation .$~ ~i< :,, ... 1 P SUFFIX PLASTIC PACKAGE CASE 626 . Between 60 /~00'%and Inverter Output for Easy Conversion ,,:\, 120/2400 Sensor Phasing Conventions ,*.$i'!i<, `\..;\*$ ,:.' .*.- D SUFFIX PLASTIC PACKAGE CASE 751 (S0-8) REPR~@k&k$lVE BLOCK DIAGRAM PIN CONNECTIONS Inputs (Top View) ., e m ORDERING INFORMATION @MOTORO~ INC., 1990 DS9736 MAXIM1lM ... RATINGS -----------. .. . . .---Rating VCC Zener Current Logic Input Current (Pins 1, 2, 3) Output Current (Pin 4, 5), Sink or Source Power Dissipation and Thermal Characteristics Maximum Power Dissipation @ TA = +85C Thermal Resistance Junction to Air Operating Junction Temperature Operating Ambient Temperature fi. .=Iorage I emperature Kange Range Symbol Value Unit IZ(vcc) 30 mA IIH 5.0 mA lDRV 20 mA pD 650 mW R~JA 100 "Clw TJ +150 `c TA -40 to +85 --..-I-tibto +15UI `c ."c I Stq v -- 1.0 0.9 pA - 80 - 5.0 - 380 - 5.0 v 3.60 4.20 3.95 4,75 20 4.20 -- L 0.25 0.25 205 I I 0.50 0.50 35 60 mA 225 245 ps Motorola reserves the right to make changea without further notice to any products herein to improve reliability, function or design. Motorola does not assume anv Iiabilitv arising out of the application or use of any product or circuit described herein; neither does it convey anv license under its patent rights nor the rights of others. Motorola products are not authorized for use as components in life support devices or svstems intended for surgical implant into the body or intended to support or sustain life. Buyer agrees to notify Motorola of anv such intended end use whereupon Motorole shall determine availability and suitability of its product or products for the use intended. Motorola and @ are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Employment Opportunity/Affirmative Action Employer, MOTOROLA 2 MC33039 FIGURE 1 -- TYPICAL THREE PHASE, SIX STEP MOTOR APPLICATION Rotor Electrical Position (Degrees) Q,, o I +A 60 120 180 240 300 360 I I I [ I I II II II I I 4p[6p II 17p 11 [ 6W Sensor Electrical Phasing Input I 12W Sensor Electrical Phasing Input [ [Ill Latch "Set" Input o n n i n Vth = 0.67 VCC RTICT ,1, I , 1111 Vout (AVG) fout output Speed OPERATING DE~:~@DN The MC33#$J~;&ovides ~\~: \ implementi~.ghsed-loop an economical speed control method of of brush less dc motor&k~&~,,~nating the need for a magnetic or optical tach,o~~t~~. `Shown in the timing diagram of Figure 1, th~~~,~~k~:&' Inputs (Pins 1, 2, 3) monitor the brush less ~wlo~-rotor position sensors. Each sensor signal tran- 0 $~~~~ is digitally detected; OR'ed at the Latch `Set' Input, ahd causes CT to discharge. A corresponding output pulse is generated at fout (Pin 5) of a defined amplitude, and programmable width determined by the values selected for RT and CT (Pin 6). The average voltage of the output pulse train increases with motor speed. When fed through a low pass filter or integrator, a dc voltage proportional to speed is generated. Figure 2 shows the proper connections for a typical closed loop MC33039 application using the MC33034 brushless motor controller. Constant speed operation down to 100 RPM is possible with economical three phase four pole motors. The 4A inverter output (Pin 4) is used in systems where the controller and motor sensor phasing conventions are not compatible. A method of converting from either convention to the other is shown in Figure 3. For a more detailed explanation of this subject, refer to the text above Figure 39 on the MC33034 data sheet, The output pulse amplitude VOH is constant with ternperature and controlled by the supply voltage on VCC (Pin 8). Operation down to 5.5 V is guaranteed over temperature. For systems without a regulated power supply, an internal 8.25 V shunt regulator is provided. MOTOROLA s FIGURE 2 -- TYPICAL CLOSED-LOOP SPEED CONTROL APPLICATION .---- ---- 7 1111{ -- I II t L-________J M.,., -- I ~ MC33039P 6, &' ------ ~C33034P60 4 dA From Sensors lzo~ or 240. Electrical Phasing -- ['1. \ + :! ~ *B *C7 ------ rMC33039P 4 --i + Pos DEC 6 1 3 --Ill MOTOROLA 4 FIGURE 4 -- `fOut PULSE WIDTH versus TIMING .E I I I I I I I I I I I I I Ml I I I I I I I I I I I I I I 1> , , 1 1 @ 1 1 1 1 1 1 1 I , I , , , , , Vcc = 6.25v \ ~ `TA = 25C I I = I I 0.01t I 1X1 I I I I , , xl I I II I 1- 1 FIGURE 5 -- fOut, PULSE WIDTH CHANGE versus TEMPERATURE I I II ,- 2,0 RESISTOR I I 20 RT, TIMING RESISTOR (kQj 1 200 FIGURE 6 -- fOut PULSE WIDTH CHANGE versus SUPPLY VOLTAGE + 4.0 [ I I I I I I I I I I I II TA = - 400C .0 H 0 0 2.0 4,0 6.0 Vcc, SUPPLY VOLTAGE (V) FIGURE 9 -- fOut, SATURATION 8.0 10 CHANGE versus TEMPERATURE o 4.0 8.0 10,OUTPUT LOAD CURRENT (mA) MOTOROLA 5 12 16 TA, AMBIENT TEMPERATURE (C) MC33039 THERMAL The maximum power consumption an integrated circuit can tolerate at a given operating ambient temperature, can be found from the equation: TJ(max) - TA PD(TA) = R8JA(TYP) Where: given PD(TA) operating = Power ambient Dissipation allowable Distribution TJ(max) = Maximum operating Junction Temperature as listed in the Maximum Ratings Section TA = Maximum Desired Operating Ambient ,. Tern peratu RgJA(Typ) re = Typical Thermal Resistance Ambient at a Junction to ,:!$, temperature. OUTLINE Literature INFORMATION DIMENSIONS Centers: USA: Motorola Literature Distribution; P.O. Box 20912; Phoenix, Arizona 85036. EUROPE: Motorola Ltd.; European Literature Center; 88 Tanners Drive, Blakelands, Milton Keynes, MK14 5BP, England, ASIA PACIFIC: Motorola Semiconductors H.K. Ltd.; P.O. Box 80300; Cheung Sha Wan Post Ofice; Kowloon Hong Kong, JAPAN: Nippon Motorola Ltd.; 3-20-1 Minamiazabu, Minato-ku, Tokyo 106 Japan. E o M MOTOROLA MC33039 ,0833-2 ,,,,,," ,, "SA ,/90 ,WE.IAL ,,,"0 ,7,,6, ,8,000 ,,, Y,,,*