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| INTEGRATED CIRCUITS DATA SHEET For a complete data sheet, please also download: * The IC04 LOCMOS HE4000B Logic Family Specifications HEF, HEC * The IC04 LOCMOS HE4000B Logic Package Outlines/Information HEF, HEC HEF4752V LSI A.C. motor control circuit Product specification File under Integrated Circuits, IC04 January 1995 Philips Semiconductors Product specification A.C. motor control circuit DESCRIPTION The HEF4752V is a circuit for a.c. motor speed control utilizing LOCMOS technology. The circuit synthesizes three 120 out of phase signals, of which the average voltage varies sinusoidally with time in the frequency range 0 to 200 Hz. The method employed is based upon the pulse width modulation principle, in order to achieve a sufficient accuracy of the output voltages over the whole frequency range. A pure digital waveform generation is used. All outputs are of the push-pull type. Inputs and outputs are protected against electrostatic effects in a wide variety of device-handling situations. However, to be totally safe, it is desirable to take handling precautions into account. PINNING Inputs; group I 24 = L 25 = I 7=K 5 = CW 13 = A 15 = B 16 = C Inputs; group II 12 = FCT 17 = VCT 4 = RCT 6 = OCT frequency clock voltage clock reference clock output delay clock data data data data data data data HEF4752V LSI Outputs; group I 23 = RSYN 26 = VAV 18 = CSP Outputs; group II 8 = ORM1 9 = ORM2 10 = ORC1 11 = ORC2 22 = OYM1 21 = OYM2 20 = OYC1 19 = OYC2 3 = OBM1 2 = OBM2 1 = OBC1 27 = OBC2 SUPPLY VOLTAGE RATING HEF4752V Fig.1 Pinning diagram. RECOMMENDED OPERATING R-phase main R-phase main R-phase commutation R-phase commutation Y-phase main Y-phase main Y-phase commutation Y-phase commutation B-phase main B-phase main B-phase commutation B-phase commutation R-phase synchronization average voltage current sampling pulses -0,5 to 18 4,5 to 12,5 V January 1995 2 Philips Semiconductors Product specification A.C. motor control circuit HEF4752V LSI HEF4752VP(N): 28-lead DIL; plastic (SOT117-2) HEF4752VD(F): 28-lead DIL; ceramic (cerdip) (SOT135) ( ): Package Designator North America FAMILY DATA See Family Specifications January 1995 3 January 1995 4 Philips Semiconductors DC CHARACTERISTICS VSS = 0 V Tamb (C) PARAMETER VDD SYMBOL V 5 10 10 5 10 5 10 5 10 5 10 5 10 5 10 5 10 5 10 Output current HIGH Output current HIGH Output current HIGH Total supply current 5 5 10 5 10 - - - 3,5 7,0 - - 4,95 9,95 - - 1,5 3,0 1,0 2,0 0,45 1,4 0,3 0,9 0,9 0,6 1,8 1,8 - -40 MIN. MAX. Quiescent device current Input leakage current Input voltage HIGH Input voltage LOW Output voltage HIGH Output voltage LOW Input tripping level; input voltage increasing Input tripping level; input voltage decreasing Output current LOW Output current HIGH IDD IIN VIH VIL VOH VOL Vti Vtd IOL -IOH -IOH -IOH -IOH Itot 50 100 - - - 1,5 3,0 - - 0,05 0,05 4,0 8,0 3,5 7,0 - - - - - - - - - - - - 3,5 7,0 - - 4,95 9,95 - - 1,5 3,0 1,0 2,0 0,38 1,17 0,25 0,75 0,75 0,5 1,5 1,5 typ. 2 + 25 - - - 3,5 7,0 - - 4,95 9,95 - - 1,5 3,0 1,0 2,0 0,3 0,9 0,2 0,6 0,6 0,4 1,2 1,2 - + 85 UNIT A A A V V V V V V V V V V V V mA mA mA mA mA mA mA mA mA CONDITIONS A.C. motor control circuit MIN. MAX. MIN. MAX. 50 100 0,3 - - 1,5 3,0 - - 0,05 0,05 4,0 8,0 3,5 7,0 - - - - - - - - - 375 750 1 - - 1,5 3,0 - - 0,05 0,05 4,0 8,0 3,5 7,0 - - - - - - - - - all valid input combinations; VI = VSS or VDD VI = 0 or 10 V inputs: group I inputs: group I VI = VSS or VDD; IO < 1 A VI = VSS or VDD; IO < 1 A inputs: group II inputs: group II VOL = 0,4 V VOL = 0,5 V VOH = 4,6 V VOH = 9,5 V VOH = 2,5 V VOH = 4,6 V VOH = 9,5 V VOH = 2,5 V outputs: groups I and II outputs: group I outputs: group I outputs: groups II Product specification outputs: group II HEF4752V LSI IOL = IOH = 0; frequency applied to inputs; FCT = 700 kHz; VCT = 400 kHz; RCT = 400 kHz Philips Semiconductors Product specification A.C. motor control circuit APPLICATION INFORMATION Figure 2 shows the functional block diagram of a 3-phase a.c. motor speed control system using a thyristorized inverter with variable frequency output. The inverter control signals are generated by the HEF4752V (PWM-IC). A special feature of the PWM (Pulse-Width Modulation) - IC is here, that the motor is supplied by sinoidally modulated pulses, hence the resulting motor current will approach a sine-wave with a minimum on higher harmonics. In this way, an optimum speed drive with high performance is obtained. HEF4752V LSI Furthermore, the HEF4752V contains all logic circuitry required for this special waveform generation, so that the amount of control circuit components is reduced considerable. The speed drive system in Fig.2 is controlled by the analogue control section. The FCT and VCT clock pulse oscillators are driven in such a way, that a fast response speed control of the a.c. motor is obtained, depending on: the reference values for speed; motor voltage; motor current (Limited by the measured motor current via DCCT - d.c. current transformer -); the increasing value of VCb during braking action. Fig.2 PWM motor speed control system using HEF4752V. January 1995 5 Philips Semiconductors Product specification A.C. motor control circuit HEF4752V LSI January 1995 6 Fig.3 Application of HEF4752V in a basic circuit configuration for AC motor control. |
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