tdf5242t NXP Semiconductors, tdf5242t Datasheet
tdf5242t
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tdf5242t Summary of contents
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... DATA SHEET TDF5242T Brushless DC motor drive circuit Preliminary specification Supersedes data of 1997 Apr 23 File under Integrated Circuits, IC11 INTEGRATED CIRCUITS 1997 Sep 12 ...
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... High-power applications, for instance: – high-end hard disk drives – automotive applications. GENERAL DESCRIPTION The TDF5242T is a bipolar integrated circuit for driving 3-phase brushless DC motors in full-wave mode. The device functions sensorless, thus saving 3 hall-effect sensors, using the back-EMF (Electro Motive Force) sensing technique to sense the rotor position ...
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... COMMUTATION LOGIC ROTATION SPEED AND DETECTOR OUTPUT STAGE BRAKE LOGIC TDF5242T BRAKE GND2 GND1 Fig.1 Block diagram. 3 Preliminary specification TDF5242T VMOT 6 OUTPUT DRIVER STAGE 27 28 OUTPUT DRIVER STAGE 1 OUTPUT DRIVER STAGE 2 OUTPUT DRIVER STAGE OUTPUT DRIVER 4 STAGE 5 OUTPUT DRIVER ...
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... GND1 3 OUT-PC 4 OUT-NC 5 VMOT 6 DIR 7 TDA5242T TEST 8 BRAKE GND2 11 n. CAP-CD 14 MGG987 Fig.2 Pin configuration. 4 Preliminary specification TDF5242T DESCRIPTION OUT- OUT-NA 26 MOT0 n. COMP-C 23 COMP-B COMP AMP OUT 20 AMP IN AMP IN 19 CAP-TI 18 n.c. 17 CAP- CAP-DC ...
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... In Table 1, the six possible states of the externally connected output transistors have been depicted and the corresponding output levels on the NA, PA, NB, PB, NC and PC outputs of the TDF5242T. The zero-crossing in the motor EMF (detected by the comparator selected by the commutation logic) is used to calculate the correct moment for the next commutation, that is, the change to the next output state ...
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... A pulse from the start oscillator will cause the outputs to change to the next state. If the movement of the motor generates enough EMF, the TDF5242T 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 ...
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... Snubber networks at the outputs should be critically damped. Typical voltage waveforms are illustrated by Fig.4. Miscellaneous functions In addition to start-up and commutation control, the TDF5242T provides the following functions: Generation of the tacho signal FG General purpose Operational Transconductance Amplifier (OTA) Possibilities of motor control Direction function and brake function High current and temperature protection ...
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... Fig.8). FG SIGNAL The FG (Frequency Generator) signal is generated in the TDF5242T 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. ...
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... QUALITY SPECIFICATION In accordance with “SNW-FQ-611-E”. The number of the quality specification can be found in the ”Quality Reference Handbook” . The handbook can be ordered using the code 9397 750 00192. 150 200 T amb ( C) 9 Preliminary specification TDF5242T MIN. MAX. UNIT 0 0.5 ...
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... I = 100 mA amb I = 100 mA amb I = 100 mA amb lower transistor 150 O 0 amb amb 10 Preliminary specification TDF5242T TYP. MAX. UNIT 18 V 5.2 6. 140 150 VMOT ...
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... C amb normal mode amb amb pF amb 1.5 2 amb amb 11 Preliminary specification TDF5242T TYP. MAX. UNIT mA 1.5 2.1 V + ...
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... V < V < 0 CAP-TI 0.3 V < V < 2.2 V 6.5 CAP- amb amb amb 10.6 5.3 1. 825 amb 2.3 10.1 20.9 0 825 amb 2 mA Preliminary specification TDF5242T TYP. MAX. UNIT 5.5 4 0.30 V 2. 2.05 2.25 850 875 mV 1.4 mV/K 2.5 V 15.5 20.9 A 15.5 10.1 A 1.025 1 ...
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... Sep 12 RY (1) 330 n. ( (1) 13 Preliminary specification TDF5242T 100 n. TDF5242T n.c. FG BRAKE DIR 1 F VMOT MGG990 ...
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... Fig.7 Application diagram without use of the Operational Transconductance Amplifier (OTA) with MOSFETs. 1997 Sep 12 330 n. TDF5242T DIR 1 F VMOT 14 Preliminary specification TDF5242T 100 n. n. BRAKE 1 F MGG991 ...
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... PROTECTION micro- controller DIRECTION GND2 11 GND1 12, 17, 25 n.c. Fig.8 Application of the TDF5242T as a scanner driver, with the use of the uncommitted on-chip OTA. 1997 Sep BD434 680 14 V 470 47 nF 120 21 START-UP OSCILLATOR ADAPTIVE COMMUTATION DELAY TIMING ...
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... EIAJ MS-013AE 16 Preliminary specification detail 10.65 1.1 1.1 0.25 0.25 1.4 10.00 0.4 1.0 0.419 0.043 0.043 0.055 0.01 0.01 0.394 0.016 0.039 EUROPEAN PROJECTION TDF5242T SOT136 ( 0.9 0.1 0 0.035 0.004 0.016 ISSUE DATE 95-01-24 97-05-22 ...
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... Use only a low voltage soldering iron (less than 24 V) applied to the flat part of the lead. Contact time must be limited to 10 seconds 300 C. When using a dedicated tool, all other leads can be soldered in one operation within seconds between 270 and 320 C. 17 Preliminary specification TDF5242T ...
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... Philips customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1997 Sep 12 18 Preliminary specification TDF5242T ...
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... Philips Semiconductors Brushless DC motor drive circuit 1997 Sep 12 NOTES 19 Preliminary specification TDF5242T ...
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Philips Semiconductors – a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. +43 160 1010, ...