TDA5145T Philips Semiconductors, TDA5145T Datasheet

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TDA5145T

Manufacturer Part Number
TDA5145T
Description
18 V, Brushless DC motor drive circuit
Manufacturer
Philips Semiconductors
Datasheet

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Philips Semiconductors
Product specification
Supersedes data of March 1992
File under Integrated Circuits, IC11
DATA SHEET
TDA5145
Brushless DC motor drive circuit
INTEGRATED CIRCUITS
June 1994

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TDA5145T Summary of contents

Page 1

... DATA SHEET TDA5145 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

... +AMP IN = AMP all outputs I VMOT P ORDERING INFORMATION TYPE NUMBER TDA5145 TDA5145T June 1994 APPLICATIONS General purpose spindle driver e.g.: – Hard disk drive – Tape drive – Optical disk drive. GENERAL DESCRIPTION The TDA5145 is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode ...

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... Philips Semiconductors Brushless DC motor drive circuit BLOCK DIAGRAM ...

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... Philips Semiconductors Brushless DC motor drive circuit PINNING (1) SYMBOL PIN MOT1 1 and 2 driver output 1 TEST 3 test input/output n.c. 4 not connected MOT2 5 and 6 driver output 2 VMOT 7 and 8 input voltage for the output driver stages BRAKE 9 brake input; this pin may not be left floating, a LOW level voltage must be applied to disable ...

Page 5

... Philips Semiconductors Brushless DC motor drive circuit Fig.2 Pin configuration. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER V supply voltage P V input voltage; all pins except I VMOT V VMOT input voltage VMOT V output voltage O AMP OUT and FG MOT0, MOT1, MOT2 and MOT3 ...

Page 6

... Philips Semiconductors Brushless DC motor drive circuit 6 handbook, halfpage P tot (W) 4 3. 100 70 Fig.3 Power derating curve (SOT117-1; DIL28). HANDLING Every pin withstands the ESD test according to “MIL-STD-883C class 2” . Method 3015 (HBM 1500 , 100 pF) 3 pulses + and 3 pulses on each pin referenced to ground. ...

Page 7

... Philips Semiconductors Brushless DC motor drive circuit SYMBOL PARAMETER MOT0; centre tap V input voltage I I input bias current I V comparator switching level CSW V variation in comparator switching CSW levels V comparator input hysteresis hys MOT1, MOT2 and MOT3; see Fig.5 V drop-out output voltage DO V variation in saturation voltage ...

Page 8

... Philips Semiconductors Brushless DC motor drive circuit SYMBOL PARAMETER RESET V HIGH level input voltage IH V LOW level input voltage IL I LOW level input current IL I HIGH level input current IH BRAKE V HIGH level input voltage IH V LOW level input voltage IL I LOW level input current ...

Page 9

... Philips Semiconductors Brushless DC motor drive circuit SYMBOL PARAMETER CAP-DC I output sink current sink I output source current source I /I ratio of sink to source current sink source V LOW level input voltage IL V HIGH level input voltage IH Notes 1. An unstabilized supply can be used all other inputs all outputs at V ...

Page 10

... Philips Semiconductors Brushless DC motor drive circuit APPLICATION INFORMATION (1) Value selected for 3 Hz start-up oscillator frequency. Fig.7 Application diagram without use of the operational transconductance amplifier (OTA). Introduction (see Fig.8) Full-wave driving of a three phase motor requires three push-pull output stages. In each of the six possible states two outputs are active, one sourcing (H) and one sinking (L) ...

Page 11

... Philips Semiconductors Brushless DC motor drive circuit provided that will generate commutation pulses when no zero-crossings in the motor voltage are available. A timing function is incorporated into the device for internal timing and for timing of the reverse rotation detection. The TDA5145 also contains an uncommitted transconductance amplifier (OTA) that can be used as a control amplifier ...

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... Philips Semiconductors Brushless DC motor drive circuit ...

Page 13

... Philips Semiconductors Brushless DC motor drive circuit Fig.9 CAP-CD and CAP-DC typical voltage waveforms in normal running mode. T (CAP-TI) HE TIMING CAPACITOR Capacitor CAP-TI is used for timing the successive steps within one commutation period; these steps include some internal delays. The most important function is the watchdog time in which the motor EMF has to recover from a negative diode-pulse back to a positive EMF voltage (or vice versa) ...

Page 14

... Philips Semiconductors Brushless DC motor drive circuit If the chosen value of CAP-TI is too small oscillations can occur in certain positions of a blocked rotor. If the chosen value is too large, then it is possible that the motor may run in the reverse direction (synchronously with little torque). Fig.10 Typical CAP-TI and V ...

Page 15

... Philips Semiconductors Brushless DC motor drive circuit M C OTOR ONTROL DC motors can be controlled in an analog manner using the OTA. For the analog control an external transistor is required. The OTA can supply the base current for this transistor and act as a control amplifier (see Fig.8). ...

Page 16

... Philips Semiconductors Brushless DC motor drive circuit Table 4 Priority of function. (1) (1) BRAKE TEST RESET Note LOW state HIGH state. June 1994 R ELIABILITY ( necessary to protect high current circuits and the ...

Page 17

... Philips Semiconductors Brushless DC motor drive circuit PACKAGE OUTLINES handbook, full pagewidth 3.9 3.4 1.7 max 28 1 Dimensions in mm. Fig.11 Plastic dual in-line package; 28 leads (600 mil) (SOT117-1; DIP28). June 1994 36.0 35.0 0.53 2.54 max (13x) 1.7 max Product specification TDA5145 15.80 15.24 4.0 5.1 max max 0.51 min 0.254 M 0.32 max 15.24 17.15 15.90 14.1 13.7 MSA264 ...

Page 18

... Philips Semiconductors Brushless DC motor drive circuit handbook, full pagewidth S 0.9 (4x) 0.4 28 pin 1 index 1 Dimensions in mm. Fig.12 Plastic small outline package; 28 leads; large body (SOT136-1; SO28L). June 1994 18.1 17.7 0 0.49 0.25 M 0.36 1.27 (28x) 18 Product specification TDA5145 7.6 7.4 10.65 10.00 1.1 1.0 2.45 0.3 2.25 0.32 0.1 0.23 1.1 0 detail A A 2.65 2.35 o MBC236 - 1 ...

Page 19

... Philips Semiconductors Brushless DC motor drive circuit SOLDERING Plastic small-outline packages B Y WAVE During placement and before soldering, the component must be fixed with a droplet of adhesive. After curing the adhesive, the component can be soldered. The adhesive can be applied by screen printing, pin transfer or syringe dispensing ...

Page 20

... Philips Semiconductors Brushless DC motor drive circuit DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains fi ...

Page 21

... Philips Semiconductors Brushless DC motor drive circuit June 1994 NOTES 21 Product specification TDA5145 ...

Page 22

... Philips Semiconductors Brushless DC motor drive circuit June 1994 NOTES 22 Product specification TDA5145 ...

Page 23

... Philips Semiconductors Brushless DC motor drive circuit June 1994 NOTES 23 Product specification TDA5145 ...

Page 24

... 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 ...

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