INTEGRATED CIRCUITS DATA SHEET TDA5145TS Brushless DC motor drive circuit Product specification File under Integrated Circuits, IC11 1998 Oct 27 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS FEATURES APPLICATIONS • Full-wave commutation (using push-pull drivers at the output stages) without position sensors • General purpose spindle driver e.g.: – Hard disk drive • Built-in start-up circuitry – Tape drive • Three push-pull outputs: – Optical disk drive. – Output current 2.0 A (typ.) – Built-in current limiter GENERAL DESCRIPTION – Soft-switching outputs for low Electromagnetic Interference (EMI). The TDA5145TS 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 bidirectional control, brake function and has a special circuit built-in to reduce the EMI (soft-switching output stages). • Thermal protection • Flyback diodes • Motor brake facility • Direction control input • Reset function. QUICK REFERENCE DATA Measured over full voltage and temperature range. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP supply voltage note 1 4 − 18 V Vi(VMOT) input voltage to the output driver stages note 2 1.7 − 16 V VDO drop-out output voltage Io = 100 mA − 0.90 1.05 V ILIM current limiting VVMOT = 10 V; Ro = 1.2 Ω 1.8 2.0 2.5 A Notes 1. An unstabilized supply can be used. 2. VVMOT = VP; all outputs Io = 0 mA. ORDERING INFORMATION PACKAGE TYPE NUMBER NAME TDA5145TS SSOP24 1998 Oct 27 DESCRIPTION plastic shrink small outline package; 24 leads; body width 5.3 mm 2 VERSION SOT340-1 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS BLOCK DIAGRAM BRAKE handbook, full pagewidth RESET 8 18 14 6, 7 RESET BRAKE CAP-ST VMOT START-UP OSCILLATOR DH PUSH/PULL FLYBACK 1, 2 CAP-DC CAP-CD TEST CAP-TI DIR 13 ADAPTIVE COMMUTATION DELAY 12 3 THERMAL PROTECTION DL OUTPUT DRIVER STAGE 1 COMMUTATION LOGIC TIMING OUTPUT DRIVER STAGE 2 15 9 MOT1 DIRECTION CONTROL OUTPUT DRIVER STAGE 3 4, 5 MOT2 20, 21 MOT3 TDA5145TS 22 EMF COMPARATORS 10 23, 24 11 MGR391 GND2 GND1 VP Fig.1 Block diagram. 1998 Oct 27 3 MOT0 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS PINNING SYMBOL PIN DESCRIPTION MOT1 1 driver output 1 MOT1 2 driver output 1 MOT1 1 24 GND1 TEST 3 test input/output MOT1 2 23 GND1 MOT2 4 driver output 2 TEST 3 22 MOT0 MOT2 5 driver output 2 MOT2 4 21 MOT3 VMOT 6 input voltage for the output driver stages MOT2 5 20 MOT3 VMOT 7 input voltage for the output driver stages BRAKE 8 brake input; this pin may not be left floating, a LOW-level voltage must be applied to disable this function DIR 9 direction control input; this pin may not be left floating GND2 10 ground supply return for control circuits VP 11 supply voltage CAP-CD 12 external capacitor connection for adaptive communication delay timing CAP-DC 13 external capacitor connection for adaptive communication delay timing copy handbook, halfpage 19 n.c. VMOT 6 TDA5145TS VMOT 7 18 RESET BRAKE 8 17 n.c. DIR 9 16 n.c. GND2 10 15 CAP-TI VP 11 14 CAP-ST CAP-CD 12 13 CAP-DC MGR392 Fig.2 Pin configuration. FUNCTIONAL DESCRIPTION The TDA5145TS offers a sensorless 3-phase motor drive function. It is unique in its combination of sensorless motor drive and full-wave drive. The TDA5145TS offers protected outputs capable of handling high currents and can be used with star or delta connected motors. It can easily be adapted for different motors and applications. The TDA5145TS offers the following features: CAP-ST 14 external capacitor connection for start-up oscillator CAP-TI 15 external capacitor connection for timing n.c. 16 not connected n.c. 17 not connected RESET 18 reset input; this pin may not be left floating, a LOW-level voltage must be applied to disable this function n.c. 19 not connected • Optimum commutation, independent of motor type or motor loading MOT3 20 driver output 3 • Built-in flyback diodes MOT3 21 driver output 3 • Three phase full-wave drive MOT0 22 input from the star point of the motor coils • High output current (2.0 A) GND1 23 ground (0 V) motor supply return for output stages GND1 24 ground (0 V) motor supply return for output stages • Sensorless commutation by using the motor EMF • Built-in start-up circuit • Outputs protected by current limiting and thermal protection of each output transistor • Low current consumption by adaptive base-drive • Soft-switching pulse output for low radiation • Direction of rotation controlled by one pin • Brake function. 1998 Oct 27 4 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT − 18 V −0.3 VP + 0.5 V VMOT input voltage −0.5 +17 V VO output voltage MOT0, MOT1, MOT2 and MOT3 −1 VVMOT + VdFD V VI(n1) input voltage CAP-ST, CAP-TI, CAP-CD and CAP-DC − 2.5 V Tstg storage temperature −55 +150 °C Tamb operating ambient temperature 0 +70 °C Ptot total power dissipation see Fig. 3 − − W Ves electrostatic handling see Chapter “Handling” − 2000 V VP supply voltage VI(n) input voltage; all pins except VMOT VI(VMOT) VI < 18 V HANDLING Every pin withstands the ESD test according to “MIL-STD-883C class 2”. Method 3015 (HBM 1500 Ω; 100 pF) 3 pulses positive and 3 pulses negative on each pin referenced to ground. MGL529 2 handbook, halfpage Ptot (W) 1.00 1 0.57 0 −50 0 50 100 70 150 200 Tamb (°C) Fig.3 Power derating curve. 1998 Oct 27 5 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS CHARACTERISTICS VP = 14.5 V; Tamb = 25 °C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VP supply voltage note 1 4 − 18 V IP supply current note 2 − 6.8 7.8 mA Vi(VMOT) input voltage to the output driver stages see Fig.1 1.7 − 16 V 130 140 150 °C − TSD − 30 − K −0.5 − VVMOT V Thermal protection TSD local temperature at temperature sensor causing shut-down ∆T reduction in temperature before switch-on after shut-down MOT0; centre tap Vi input voltage Ibias input bias current 0.5 V < Vi < VVMOT − 1.5 V −10 VCSW comparator switching level note 3 − − µA ±20 ±25 ±30 mV ∆VCSW variation in comparator switching levels − − 3 mV Vhys comparator input hysteresis − 75 − µV 1.05 V MOT1, MOT2 and MOT3; see Fig.4 VDO drop-out output voltage Io = 100 mA − 0.9 Io = 1000 mA − 1.6 1.85 V ∆Vsat(lt) variation in saturation voltage between lower transistors Io = 100 mA − − 180 mV ∆Vsat(ut) variation in saturation voltage between upper transistors Io = −100 mA − − 180 mV ILIM current limiting VVMOT = 10 V; Ro = 1.2 Ω 1.8 2.0 2.5 A tr rise time switching output VVMOT = 15 V; see Fig.5 5 10 15 µs tf fall time switching output VVMOT = 15 V; see Fig.5 10 15 20 µs VdF(DH) diode forward voltage (diode DH) Io = −500 mA; notes 4 and 5; see Fig.1 − − 1.5 V VdF(DL) diode forward voltage (diode DL) Io = 500 mA; notes 4 and 5; see Fig.1 −1.5 − − V IdM peak diode current note 5 − − 2.5 A VIH HIGH-level input voltage 4 V < VP < 18 V 2.0 − − V VIL LOW-level input voltage 4 V < VP < 18 V − − 0.8 V IIL LOW-level input current − −20 − µA IIH HIGH-level input current − 20 − µA DIR 1998 Oct 27 6 Philips Semiconductors Product specification Brushless DC motor drive circuit SYMBOL PARAMETER TDA5145TS CONDITIONS MIN. TYP. MAX. UNIT RESET VIH HIGH-level input voltage reset mode; 4 V < VP < 18 V 2.0 − − V VIL LOW-level input voltage normal mode; 4 V < VP < 18 V − − 0.8 V IIL LOW-level input current Vi = 2.0 V − −20 − µA IIH HIGH-level input current Vi = 0.8 V − 20 − µA VIH HIGH-level input voltage brake mode; 4 V < VP < 18 V 2.0 − − V VIL LOW-level input voltage normal mode; 4 V < VP < 18 V − − 0.8 V IIL LOW-level input current Vi = 2.0 V − −20 − µA IIH HIGH-level input current Vi = 0.8 V − 20 − µA BRAKE CAP-ST Io(sink) output sink current 1.5 2.0 2.5 µA Io(source) output source current −2.5 −2.0 −1.5 µA VswL LOW-level switching voltage − 0.20 − V VswH HIGH-level switching voltage − 2.20 − V CAP-TI Io(sink) output sink current Io(source) output source current − 28 − µA 0.2 V < VCAP-TI < 0.3 V − −57 − µA 0.3 V < VCAP-TI < 2.2 V − −5 − µA VswL LOW-level switching voltage − 50 − mV VswM MIDDLE-level switching voltage − 0.30 − V VswH HIGH-level switching voltage − 2.20 − V Io(sink) output sink current 10.6 16.2 22 µA Io(source) output source current −5.3 −8.1 −11 µA Isink/Isource ratio of sink to source current 1.85 2.05 2.25 VIL LOW-level input voltage 850 875 900 mV VIH HIGH-level input voltage 2.3 2.4 2.55 V Io(sink) output sink current 10.1 15.5 20.9 µA Io(source) output source current −20.9 −15.5 −10.1 µA Isink/Isource ratio of sink to source current 0.9 1.025 1.15 VIL LOW-level input voltage 850 875 900 mV VIH HIGH-level input voltage 2.3 2.4 2.55 V CAP-CD CAP-DC 1998 Oct 27 7 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS Notes 1. An unstabilized supply can be used. 2. VVMOT = VP, all other inputs at 0 V; all outputs at VP; Io = 0 mA. 3. Switching levels with respect to MOT1, MOT2 and MOT3. 4. Drivers are in the high-impedance OFF-state. 5. The outputs are short-circuit protected by limiting the current and the IC temperature. hysteresis 75 µV typ. handbook, full pagewidth MGR381 back EMF signal VCSW VMOT0 VCSW MOT1, MOT2 and MOT3 comparator threshold voltages Fig.4 Switching levels with respect to MOT1, MOT2 and MOT3. handbook, halfpage 12.5 V 12.5 V 2.0 V 2.0 V tr tf MGR382 Fig.5 Output transition time measurement. 1998 Oct 27 8 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS APPLICATION INFORMATION handbook, full pagewidth (1) 18 nF GND1 10 nF 24 23 22 21 20 19 18 220 nF 17 16 15 14 13 8 9 10 11 12 TDA5145TS 1 2 3 4 5 6 7 18 nF BRAKE DIR VP VMOT 10 µF MGR393 (1) Value selected for 3 Hz start-up oscillator frequency. Fig.6 Application diagram. Introduction (see Fig.7) Table 1 Output states; note 1 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). The third output presents a high impedance (Z) to the motor, which enables measurement of the motor back EMF in the corresponding motor coil by the EMF comparator at each output. The commutation logic is responsible for control of the output transistors and selection of the correct EMF comparator. The sequence of the six possible states of the outputs is given in Table 1. MOT1 MOT2 MOT3 1 Z L H 2 H L Z 3 H Z L 4 Z H L 5 L H Z 6 L Z H Note 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. The delay is calculated (depending on the motor loading) by the adaptive commutation delay block. 1. H = HIGH state; L = LOW state; Z = high-impedance OFF-state. The system will only function when the EMF voltage from the motor is present. Therefore, a start oscillator is provided that will generate commutation pulses when no zero-crossings in the motor voltage are available. Because of high inductive loading the output stages contain flyback diodes. The output stages are also protected by a current limiting circuit and by thermal protection of the six output transistors. 1998 Oct 27 STATE A timing function is incorporated into the device for internal timing and for timing of the reverse rotation detection. 9 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS The TDA5145TS is designed for systems with low current consumption: use of I2L logic, adaptive base drive for the output transistors (patented). If the damping is high then a start frequency of 2 Hz can be chosen or t = 500 ms, thus C = 0.5/2 = 0.25 µF (choose 220 nF). Adjustments THE ADAPTIVE COMMUTATION DELAY (CAP-CD AND CAP-DC) The system has been designed in such a way that the tolerances of the application components are not critical. However, the approximate values of the following components must still be determined: • The two capacitors in the adaptive commutation delay circuit; these are important in determining the optimum moment for commutation, depending on the type and loading of the motor. In this circuit, capacitor CAP-CD is charged during one commutation period, with an interruption of the charging current during the diode pulse. During the next commutation period this capacitor (CAP-CD) is discharged at twice the charging current. The charging current is 8.1 µA and the discharging current 16.2 µA; the voltage range is from 0.9 to 2.2 V. The voltage must stay within this range at the lowest commutation frequency of interest, fC1: • The timing capacitor; this provides the system with its timing signals. 6231 8.1 × 10 C = -------------------------- = ------------- (C in nF) f C1 f × 1.3 • The start capacitor; this determines the frequency of the start oscillator. –6 If the frequency is lower, then a constant commutation delay after the zero-crossing is generated by the discharge from 2.2 to 0.9 V at 16.2 µA; maximum delay = (0.076 × C) ms (with C in nF) THE START CAPACITOR (CAP-ST) This capacitor determines the frequency of the start oscillator. It is charged and discharged, with a current of 2 µA, from 0.05 to 2.2 V and back to 0.05 V. The time taken to complete one cycle is given by: tstart = (2.15 × C) s (with C in µF) Example: nominal commutation frequency = 900 Hz and the lowest usable frequency = 400 Hz; thus: 6231 CAP-CD = ------------- = 15.6 (choose 18 nF) 400 The start oscillator is reset by a commutation pulse and so is only active when the system is in the start-up mode. A pulse from the start oscillator will cause the outputs to change to the next state (torque in the motor). If the movement of the motor generates enough EMF the TDA5145TS 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. The oscillation of the motor is given by: 1 f osc = ----------------------------------Kt × I × p 2π ----------------------J where: The other capacitor, CAP-DC, is used to repeat the same delay by charging and discharging with 15.5 µA. The same value can be chosen as for CAP-CD. Figure 8 illustrates typical voltage waveforms. Kt = torque constant (N.m/A) I = current (A) p = number of magnetic pole-pairs J = inertia J (kg.m2) Example: J = 72 × 10−6 kg.m2, Kt = 25 × 10−3 N.m/A, p = 6 and I = 0.5 A; this gives fosc = 5 Hz. 1998 Oct 27 10 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS BRAKE handbook, full pagewidth RESET VMOT 18 8 BRAKE 6, 7 23, 24 RESET TP D 220 nF TN 14 START-UP OSCILLATOR TN 18 nF 13 12 ADAPTIVE COMMUNICATION DELAY D TP D 18 nF TN 4, 5 COMMUNICATION LOGIC TEST 10 nF 3 THERMAL PROTECTION 1, 2 20, 21 TN TIMING D MOTOR 15 TP D 10 TN DIRECTION CONTROL TN VP D 11 TDA5145TS 22 GND2 EMF COMPARATORS GND1 9 MGR394 DIR Fig.7 Typical application of the TDA5145TS as a scanner driver. 1998 Oct 27 11 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS handbook, full pagewidth voltage on CAP-CD voltage on CAP-DC t MGH317 Fig.8 CAP-CD and CAP-DC typical voltage waveforms in normal running mode. The capacitor is charged with a current of 57 µA, from 0.2 to 0.3 V. Above this level it is charged with a current of 5 µA, up to 2.2 V only if the selected motor EMF remains in the wrong polarity (watchdog function). At the end, or, if the motor voltage becomes positive, the capacitor is discharged with a current of 28 µA. The watchdog time is the time taken to charge the capacitor with a current of 5 µA, from 0.3 to 2.2 V. THE TIMING CAPACITOR (CAP-TI) 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). A watchdog timer is a guarding function that only becomes active when the expected event does not occur within a predetermined time. To ensure that the internal delays are covered CAP-TI must have a minimum value of 2 nF. For the watchdog function a value of 10 nF for CAP-TI is recommended. The EMF usually recovers within a short time if the motor is running normally (<<ms). However, if the motor is motionless or rotating in the reverse direction, then the time can be longer (>>ms). 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. A watchdog time must be chosen so that it is long enough for a motor without EMF (still) and eddy currents that may stretch the voltage in a motor winding; however, it must be short enough to detect reverse rotation. If the watchdog time is made too long, then the motor may run in the wrong direction (with little torque). 1998 Oct 27 Typical voltage waveforms are illustrated in Fig.9. 12 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS handbook, full pagewidth VMOT 1 voltage on CAP-TI MGH318 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.9 Typical CAP-TI and VMOT1 voltage waveforms in normal running mode. Other design aspects RESET FUNCTION There are other design aspects concerning the application of the TDA5145TS besides the commutation function. They are: If the voltage at pin 18 is greater than 2.0 V, the output states are shown in Table 2. • Direction function Table 2 • Brake function • Reliability. DIRECTION FUNCTION If the voltage at pin 9 is less than 0.8 V, the motor is running in one direction (depending on the motor connections). If the voltage at pin 9 is greater than 2.0 V, the motor is running in the opposite direction. DRIVER OUTPUT STATE(1) MOT1 Z MOT2 L MOT3 H Note 1. Z = high-impedance OFF-state; L = LOW state; H = HIGH state. BRAKE FUNCTION If the voltage at pin 8 is greater than 2.0 V, the motor brakes. In that condition, the 3 outputs MOT1, MOT2 and MOT3 are forced to a LOW voltage level and the current limitation is performed internally by the sink drivers. 1998 Oct 27 Output states if VRESET > 2.0 V 13 Philips Semiconductors Product specification Brushless DC motor drive circuit Table 3 TDA5145TS Switching sequence after a reset pulse; note 1 DIR RESET MOT1 MOT2 DIR FUNCTION H H Z L H reset H L Z L H H L H L Z normal direction mode sequence H L H Z L H L Z H L H L L H Z H L L Z H L H H L Z reset L L H L Z L L Z L H reverse direction mode sequence L L L Z H L L L H Z L L Z H L L L H Z L Note 1. Z = high-impedance OFF-state; L = LOW state; H = HIGH state. Table 4 Priority of function; note 1 BRAKE TEST RESET FUNCTION L L L L L H reset L H L test L H H test H L L brake H L H brake H H L brake H H H brake normal Note 1. L = LOW state; H = HIGH state. RELIABILITY It is necessary to protect high current circuits and the output stages are protected in two ways: • Current limiting of the ‘lower’ output transistors. The ‘upper’ output transistors use the same base current as the conducting ‘lower’ transistor (+15%). This means that the current to and from the output stages is limited. • Thermal protection of the six output transistors is achieved by each transistor having a thermal sensor that is active when the transistor is switched on. The transistors are switched off when the ambient temperature becomes too high. 1998 Oct 27 14 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS PACKAGE OUTLINE SSOP24: plastic shrink small outline package; 24 leads; body width 5.3 mm D SOT340-1 E A X c HE y v M A Z 24 13 Q A2 A (A 3) A1 pin 1 index θ Lp L 1 12 bp e detail X w M 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 2.0 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 8.4 8.0 5.4 5.2 0.65 7.9 7.6 1.25 1.03 0.63 0.9 0.7 0.2 0.13 0.1 0.8 0.4 8 0o Note 1. Plastic or metal protrusions of 0.20 mm maximum per side are not included. OUTLINE VERSION SOT340-1 1998 Oct 27 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION ISSUE DATE 93-09-08 95-02-04 MO-150AG 15 o Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS If wave soldering cannot be avoided, the following conditions must be observed: SOLDERING Introduction • A double-wave (a turbulent wave with high upward pressure followed by a smooth laminar wave) soldering technique should be used. There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. • The longitudinal axis of the package footprint must be parallel to the solder flow and must incorporate solder thieves at the downstream end. Even with these conditions, only consider wave soldering SSOP packages that have a body width of 4.4 mm, that is SSOP16 (SOT369-1) or SSOP20 (SOT266-1). This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our “Data Handbook IC26; Integrated Circuit Packages” (order code 9398 652 90011). During placement and before soldering, the package must be fixed with a droplet of adhesive. The adhesive can be applied by screen printing, pin transfer or syringe dispensing. The package can be soldered after the adhesive is cured. Reflow soldering Reflow soldering techniques are suitable for all SSOP packages. Maximum permissible solder temperature is 260 °C, and maximum duration of package immersion in solder is 10 seconds, if cooled to less than 150 °C within 6 seconds. Typical dwell time is 4 seconds at 250 °C. Reflow soldering requires solder paste (a suspension of fine solder particles, flux and binding agent) to be applied to the printed-circuit board by screen printing, stencilling or pressure-syringe dispensing before package placement. A mildly-activated flux will eliminate the need for removal of corrosive residues in most applications. Several techniques exist for reflowing; for example, thermal conduction by heated belt. Dwell times vary between 50 and 300 seconds depending on heating method. Typical reflow temperatures range from 215 to 250 °C. Repairing soldered joints Fix the component by first soldering two diagonallyopposite end leads. 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 at up to 300 °C. When using a dedicated tool, all other leads can be soldered in one operation within 2 to 5 seconds between 270 and 320 °C. Preheating is necessary to dry the paste and evaporate the binding agent. Preheating duration: 45 minutes at 45 °C. Wave soldering Wave soldering is not recommended for SSOP packages. This is because of the likelihood of solder bridging due to closely-spaced leads and the possibility of incomplete solder penetration in multi-lead devices. 1998 Oct 27 16 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS 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 final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1998 Oct 27 17 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS NOTES 1998 Oct 27 18 Philips Semiconductors Product specification Brushless DC motor drive circuit TDA5145TS NOTES 1998 Oct 27 19 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. 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No. 5, 80640 GÜLTEPE/ISTANBUL, Tel. +90 212 279 2770, Fax. +90 212 282 6707 Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7, 252042 KIEV, Tel. +380 44 264 2776, Fax. +380 44 268 0461 United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes, MIDDLESEX UB3 5BX, Tel. +44 181 730 5000, Fax. +44 181 754 8421 United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409, Tel. +1 800 234 7381 Uruguay: see South America Vietnam: see Singapore Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD, Tel. +381 11 625 344, Fax.+381 11 635 777 For all other countries apply to: Philips Semiconductors, International Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 Internet: http://www.semiconductors.philips.com © Philips Electronics N.V. 1998 SCA60 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in The Netherlands 295102/750/01/pp20 Date of release: 1998 Oct 27 Document order number: 9397 750 04042