TDA5142

Manufacturer Part NumberTDA5142
DescriptionBrushless DC motor drive circuit
ManufacturerPhilips Semiconductors
TDA5142 datasheet
 


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DATA SHEET
TDA5142T
Brushless DC motor drive circuit
Product specification
Supersedes data of March 1992
File under Integrated Circuits, IC11
Philips Semiconductors
INTEGRATED CIRCUITS
June 1994

TDA5142 Summary of contents

  • Page 1

    ... DATA SHEET TDA5142T Brushless DC motor drive circuit Product specification Supersedes data of March 1992 File under Integrated Circuits, IC11 Philips Semiconductors INTEGRATED CIRCUITS June 1994 ...

  • Page 2

    ... High-power applications e.g.: – high-end hard disk drives – automotive. GENERAL DESCRIPTION The TDA5142T is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode. The device is sensorless (saving of 3 hall-sensors) using the back-EMF sensing technique to sense the rotor position. It includes a brake function and 6 pre-drivers able to control FETs or bipolar external transistors ...

  • Page 3

    ... Fig.1 Block diagram. 3 Product specification TDA5142T ...

  • Page 4

    ... C MOT0 22 input from the star point of the motor coils OUT-NA 23 driver output A for driving the n-channel power FET or power NPN OUT-PA 24 driver output A for driving the n-channel power FET or power PNP June 1994 DESCRIPTION 4 Product specification TDA5142T ...

  • Page 5

    ... June 1994 FUNCTIONAL DESCRIPTION The TDA5142T offers a sensorless three phase motor drive function unique in its combination of sensorless motor drive and full-wave drive. The TDA5142T offers protected outputs capable of driving external power FETs or bipolar power transistors. It can easily be adapted for different motors and applications ...

  • Page 6

    ... amb CONDITIONS note 1 note 2 see Fig.1 after shut-down 0 VMOT note 3 6 Product specification TDA5142T on each pin referenced MIN. TYP. MAX 5.2 6. 130 140 150 0.5 V VMOT 1 ...

  • Page 7

    ... 0 330 ; 0.3 enable brake mode < V < normal mode; 2 < V < brake mode normal mode 7 Product specification TDA5142T TYP. MAX. UNIT V 0. 0.35 V 180 mV 180 mV 200 250 650 ...

  • Page 8

    ... Switching levels with respect to driver outputs OUT-NA, OUT-NB, OUT-NC, OUT-PA, OUT-PB and OUT-PC. June 1994 CONDITIONS MIN 1 pF 1.5 2.5 0.2 V < V < 0.3 V CAP-TI 0.3 V < V < 2.2 V CAP-TI 10.6 5.3 1.85 850 2.3 10.1 20.9 0.9 850 2 mA Product specification TDA5142T TYP. MAX. UNIT 2.0 2.5 A 2.0 1.5 A 0. 0.30 V 2. 8.1 ...

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    ... Product specification TDA5142T ...

  • Page 10

    ... Product specification TDA5142T ...

  • Page 11

    ... The TDA5142T also contains an uncommitted transconductance amplifier (OTA) that can be used as a control amplifier. The output is capable of directly driving an external power transistor. The TDA5142T is designed for systems with low current consumption: use of I output transistors (patented). Adjustments The system has been designed in such a way that the tolerances of the application components are not critical ...

  • Page 12

    ... Philips Semiconductors Brushless DC motor drive circuit If the movement of the motor generates enough EMF the TDA5142T will run the motor. If the amount of EMF generated is insufficient, then the motor will move one step only and will oscillate in its new position. The amplitude of the oscillation must decrease sufficiently before the arrival of the next start pulse, to prevent the pulse arriving during the wrong phase of the oscillation ...

  • Page 13

    ... Acrobat reader. white to force landscape pages to be ... Fig.6 Typical application of the TDA5142T as a scanner driver, with use of OTA. ...

  • Page 14

    ... CAP- recommended. To ensure a good start-up and commutation, care must be taken that no oscillations occur at the trailing edge of the flyback pulse. Snubber networks at the outputs should be critically damped. Typical voltage waveforms are illustrated by Fig.8. 14 Product specification TDA5142T ...

  • Page 15

    ... Possibilities of motor control Brake function Reliability. FG SIGNAL The FG signal is generated in the TDA5142T by using the zero-crossing of the motor EMF from the three motor windings and the commutation signal. Output FG switches from HIGH-to-LOW on all zero crossings and from LOW-to-HIGH on all commutations. ...

  • Page 16

    ... This means that the current to and from the output stages is limited. Thermal protection of the six output transistors is achieved in such a way that the transistors are switched off when the local temperature becomes too high. June 1994 16 Product specification TDA5142T ...

  • Page 17

    ... Philips Semiconductors Brushless DC motor drive circuit PACKAGE OUTLINE handbook, full pagewidth S 0.9 (4x) 0.4 24 pin 1 index 1 Dimensions in mm. Fig.9 Plastic small outline package; 24 leads; large body (SOT137-1; SO24L). June 1994 15.6 15.2 0 0.49 0.25 M 0.36 1.27 (24x) 17 Product specification TDA5142T 7.6 7.4 10.65 10.00 1.1 1.0 2.45 0.3 0.32 2.25 0.1 0.23 1.1 0 detail A A 2.65 2.35 o MBC235 - 1 ...

  • Page 18

    ... C. (Pulse-heated soldering is not recommended for SO packages.) For pulse-heated solder tool (resistance) soldering of VSO packages, solder is applied to the substrate by dipping extra thick tin/lead plating before package placement. 18 Product specification TDA5142T - HELD SOLDERING ) ...

  • Page 19

    ... Philips Semiconductors Brushless DC motor drive circuit June 1994 NOTES 19 Product specification TDA5142T ...

  • Page 20

    ... Bangkok 10260, THAILAND, Tel. (662)398-0141, Fax. (662)398-3319. Turkey: Talatpasa Cad. No. 5, 80640 GÜLTEPE/ISTANBUL, Tel. (0 212)279 2770, Fax. (0212)269 3094 United Kingdom: Philips Semiconductors Limited, P.O. Box 65, Philips House, Torrington Place, LONDON, WC1E 7HD, Tel. (071)436 41 44, Fax. (071)323 03 42 United States: INTEGRATED CIRCUITS: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409, Tel ...