Closed Loop Brushless Motor Adapter

MC33039, NCV33039 Closed Loop Brushless Motor Adapter The MC33039 is a high performance closed−loop speed control adapter specifically designed for use in brushless 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 inverter output for use in systems that require conversion of sensor phasing. Although this device is primarily intended for use with the MC33035 brushless motor controller, it can be used cost effectively in many other closed−loop speed control applications. Features http://onsemi.com MARKING DIAGRAMS PDIP−8 N SUFFIX CASE 626 1 1 MC33039P AWL YYWWG • Digital Detection of Each Input Transition for Improved Low Speed • • • • • Motor Operation TTL Compatible Inputs With Hysteresis Operation Down to 5.5 V for Direct Powering from MC33035 Reference Internal Shunt Regulator Allows Operation from a Non−Regulated Voltage Source Inverter Output for Easy Conversion between 60°/300° and www.DataSheet4U.com 120°/240° Sensor Phasing Conventions Pb−Free Packages are Available 1 SOIC−8 D SUFFIX CASE 751 1 A WL, L YY, Y WW, W G or G 33039 ALYW G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package PIN CONNECTIONS φC 1 Inputs RT VCC φA 4 8 6 + 20 k Delay To Rotor Position Sensors φB 2 Delay 1 Delay SQ R + + − 0.3 V R 2R + − 15 k 5 fout CT 8 VCC 7 GND 6 RT/CT 5 fout φB 2 φA 3 φA 4 (Top View) + + φA 3 8.25 V ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. φC 7 GND Representative Block Diagram © Semiconductor Components Industries, LLC, 2006 1 April, 2006 − Rev. 5 Publication Order Number: MC33039/D MC33039, NCV33039 MAXIMUM RATINGS Rating VCC Zener Current Logic Input Current (Pins 1, 2, 3) Output Current (Pins 4, 5), Sink or Source Power Dissipation and Thermal Characteristics Maximum Power Dissipation @ TA = + 85°C Thermal Resistance, Junction−to−Air Operating Junction Temperature Operating Ambient Temperature Range MC33039 NCV33039 Storage Temperature Range I Symbol Z(V CC IIH IDRV PD RqJA TJ TA −40 to +85 −40 to +125 Tstg −65 to +150 °C ) Value 30 5.0 20 650 100 +150 Unit mA mA mA mW °C/W °C °C Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. ELECTRICAL CHARACTERISTICS (VCC = 6.25 V, RT = 10 k, CT = 22 nF, TA = 25°C, unless otherwise noted) Characteristic LOGIC INPUTS Input Threshold Voltage High State Low State Hysteresis Input Current High State (VIH = 5.0 V) φA φB, φC Low State (VIL = 0 V) φA φB, φC MONOSTABLE AND OUTPUT SECTIONS Output Voltage High State fout (Isource = 5.0 mA) φA (Isource = 2.0 mA) Low State fout (Isink = 10 mA) φA (Isink = 10 mA) Capacitor CT Discharge Current Output Pulse Width (Pin 5) POWER SUPPLY SECTION Power Supply Operating Voltage Range MC33039 (TA = −40° to +85°C) NCV33039 (TA = −40° to +125°C) Power Supply Current Zener Voltage (IZ = 10 mA) Zener Dynamic Impedance (DIZ = 10 mA to 20 mA, f p 1.0 kHz) VCC 5.5 − VZ V VOH 3.60 4.20 VOL − − Idischg tPW 20 205 0.25 0.25 35 225 0.50 0.50 60 245 mA ms 3.95 4.75 4.20 − V V VIH VIL VH IIH − 40 − IIL − 190 − − 300 − 0.3 − 380 − 5.0 − 60 − 0.3 − 80 − 5.0 2.4 − 0.4 2.1 1.4 0.7 − 1.0 0.9 mA Symbol Min Typ Max Unit ICC VZ ⎥ Zka⎥ 1.8 7.5 − 3.9 8.25 2.0 5.0 9.0 5.0 mA V W http://onsemi.com 2 MC33039, NCV33039 Rotor Electrical Position (Degrees) 0 60 120 180 240 300 360 480 600 720 φA 60° Sensor Electrical Phasing Input φB φC φA 120° Sensor Electrical Phasing Input φB φC φA Output Latch ISetI Input Vth ≈ 0.67 VCC RT/CT fout Output Vout (AVG) Constant Motor Speed Increasing Motor Speed Figure 1. Typical Three Phase, Six Step Motor Application OPERATING DESCRIPTION The MC33039 provides an economical method of implementing closed−loop speed control of brushless DC motors by eliminating the need for a magnetic or optical tachometer. Shown in the timing diagram of Figure 1, the three inputs (Pins 1, 2, 3) monitor the brushless motor rotor position sensors. Each sensor signal transition is digitally detected, ORied at the Latch iSeti Input, and 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 application using the MC33035 brushless motor controller. Constant speed operation down to 100 RPM is possible with economical three phase four pole motors. The φA 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 MC33035 data sheet. The output pulse amplitude VOH is constant with temperature 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. http://onsemi.com 3 Fault N VM Rotor S POS DEC Fwd/ Rev S Assy N VCC + + UVLO REF φA 4 6 8.25 V CT R 2R 15 k + − + Motor Output Buffers MC33039, NCV33039 Figure 2. Typical Closed Loop Speed Control Application http://onsemi.com 8 RT Speed Set + − 4 Enable 3 5 20 k EA PWM − + Thermal Delay R Q S S 2 SQ R + + − Delay 1 0.3 V Delay OSC Q R + − MC33039P 7 MC33035P ILIMIT Brake MC33039, NCV33039 100 t PW , OUTPUT PULSE WIDTH (ms) VCC = 6.25 V TA = 25°C 10 CT = 220 nF 1.0 CT = 22 nF 0.1 CT = 2.2 nF 0.01 2.0 Δ t PW , OUTPUT PULSE WIDTH CHANGE (%) + 1.6 VCC = 6.25 V RT = 10 k CT = 22 nF + 0.8 0 − 0.8 20 RT , TIMING RESISTOR (kW) 200 − 1.6 − 55 − 25 0 + 25 + 50 + 75 TA , AMBIENT TEMPERATURE (°C) + 100 + 125 Figure 3. fout, Pulse Width versus Timing Resistor Figure 4. fout, Pulse Width Change versus Temperature Δ t PW , OUTPUT PULSE WIDTH CHANGE (%) + 4.0 ICC , SUPPLY CURRENT (mA) TA = 25°C 20 16 Pins 1, 2, 3 Connected together + 2.0 12 0 8.0 TA = −40°C TA = 125°C 0 2.0 TA = 25°C 8.0 10 − 2.0 4.0 0 − 4.0 4.5 5.5 6.5 7.5 VCC , SUPPLY VOLTAGE (V) 8.5 4.0 6.0 VCC , SUPPLY VOLTAGE (V) Figure 5. fout, Pulse Width Change versus Supply Voltage Figure 6. Supply Current versus Supply Voltage ΔV sat (SOURCE), SOURCE SATURATION CHANGE (%) VCC − 2.0 Source Saturation (Load to Ground) VCC = 6.25 V TA = 25°C Δ V sat (sink), SINK SATURATION CHANGE (%) V sat , OUTPUT SATURATION VOLTAGE (V) 0 + 0.6 + 16 VCC = 6.25 V IO = 5.0 mA + 8.0 D Sink Saturation (Load to VCC) D Source Saturation (Load to Ground) 0 − 8.0 + 0.4 − 4.0 + 0.2 0 + 0.4 Sink Saturation (Load to VCC) GND 0 0 4.0 8.0 12 IO , OUTPUT LOAD CURRENT (mA) 16 + 0.2 − 0.2 − 16 − 55 − 25 0 + 25 + 50 + 75 TA , AMBIENT TEMPERATURE (°C) + 100 + 125 Figure 7. fout, Saturation versus Load Current Figure 8. fout, Saturation Change versus Temperature http://onsemi.com 5 MC33039, NCV33039 ORDERING INFORMATION Device MC33039D MC33039DG MC33039DR2 MC33039DR2G MC33039P MC33039PG NCV33039DR2* NCV33039DR2G* TA = −40°C to +125°C SOIC−8 2500 / Tape & Reel PDIP−8 50 Units / Rail TA = −40°C to +85°C SOIC−8 2500 / Tape & Reel 98 Units / Rail Operating Temperature Range Package Shipping† †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. *NCV33039: Tlow = −40C, Thigh = +125C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and change control. http://onsemi.com 6 MC33039, NCV33039 PACKAGE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 626−05 ISSUE L NOTES: 1. DIMENSION L TO CENTER OF LEAD WHEN FORMED PARALLEL. 2. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE CORNERS). 3. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. DIM A B C D F G H J K L M N MILLIMETERS MIN MAX 9.40 10.16 6.10 6.60 3.94 4.45 0.38 0.51 1.02 1.78 2.54 BSC 0.76 1.27 0.20 0.30 2.92 3.43 7.62 BSC −−− 10_ 0.76 1.01 INCHES MIN MAX 0.370 0.400 0.240 0.260 0.155 0.175 0.015 0.020 0.040 0.070 0.100 BSC 0.030 0.050 0.008 0.012 0.115 0.135 0.300 BSC −−− 10_ 0.030 0.040 8 5 −B− 1 4 F NOTE 2 −A− L C −T− SEATING PLANE J N D K M M H G 0.13 (0.005) TA M B M http://onsemi.com 7 MC33039, NCV33039 PACKAGE DIMENSIONS SOIC−8 NB CASE 751−07 ISSUE AH −X− A 8 5 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. 751−01 THRU 751−06 ARE OBSOLETE. NEW STANDARD IS 751−07. MILLIMETERS MIN MAX 4.80 5.00 3.80 4.00 1.35 1.75 0.33 0.51 1.27 BSC 0.10 0.25 0.19 0.25 0.40 1.27 0_ 8_ 0.25 0.50 5.80 6.20 INCHES MIN MAX 0.189 0.197 0.150 0.157 0.053 0.069 0.013 0.020 0.050 BSC 0.004 0.010 0.007 0.010 0.016 0.050 0_ 8_ 0.010 0.020 0.228 0.244 B 1 4 S 0.25 (0.010) M Y M −Y− G C −Z�