TA7712P/PG/F/FG TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA7712P/PG,TA7712F/FG 3-Phase, Full-Wave Brushless DC Motor Controller IC FEATURES TA7712P/PG z No frequency generator (FG) required (The rotation signal is derived from the position sensor signal.) z Start, Stop, clockwise (CW), counterclockwise (CCW) and Brake z High-gain position sensor with input hysteresis z Rotation signal output (with a frequency six times that of the position sensor output (Hall effect output)) z External transistors are required. TA7712F/FG The TA7712PG/FG: The TA7712PG/FG is a Pb-free product. About solderability, following conditions were confirmed • Solderability (1) Use of Sn-37Pb solder Bath · solder bath temperature = 230°C · dipping time = 5 seconds · the number of times = once · use of R-type flux Weight DIP20−P−300−2.54A : 2.25 g (Typ.) SSOP24−P−300−1.00 : 0.32 g (Typ.) (2) Use of Sn-3.0Ag-0.5Cu solder Bath · solder bath temperature = 245°C · dipping time = 5 seconds · the number of times = once · use of R-type flux 1 2007-9-11 TA7712P/PG/F/FG BLOCK DIAGRAM POSITION SENSOR TA7712P/PG, TA7712F/FG 2 2007-9-11 TA7712P/PG/F/FG PIN DESCRIPTION PIN No. P/PG F/FG 1 1 2 3 4 5 3 5 6 La La Lb Lb Lc + − + − + − DESCRIPTION High-side drive output for phase a Low-side drive output for phase a High-side drive output for phase b Low-side drive output for phase b High-side drive output for phase c 6 7 Lc 7 8 GND 8 10 START/STOP 9 11 CW/CCW 10 12 BRAKE Brake input 11 13 FGOUT FG output 12 14 TFG 13 ― N. C. 14 17 Hc 15 18 Hc 16 17 18 F/FG: 2 SYMBOL 19 20 22 − + Hb − Hb Ha + − + 19 23 Ha 20 24 VCC Low-side drive output for phase c Ground Start/Stop select input Rotation direction select input Connection pin for a capacitor and an resistor No connect c−phase negative Hall-amplifier input c−phase positive Hall-amplifierinput b−phase negative Hall-amplifier input b−phase positive Hall-amplifier input a−phase negative Hall-amplifier input a−phase positive Hall-amplifier input Power supply input Pins 4, 9, 15, 16 and 21: No connect 3 2007-9-11 TA7712P/PG/F/FG TIMING CHART Clockwise rotation (The position sensor signals are switched in the following sequence: Ha → Hb → Hc.) START / STOP = High CW / CCW = low BRAKE = High Counterclockwise rotation (The position sensor signals are switched in the following sequence: Ha → Hc → Hb.) START / STOP = High CW / CCW = High BRAKE = High 4 2007-9-11 TA7712P/PG/F/FG APPLICATIONS OF THE TA7712P/PG, TA7712F/FG The TA7712P/PG and TA7712F/FG are provided with a stop function, which enables them to stop the motor having a large inertia like a video disk player in a short time, so that disks can be changed quickly. To eliminate the need of the frequency generator (FG), which was conventionally required for generating the rotation signal, signals from the position sensor input are ORed and its synthesized signal is sent out from the FGOUT pin (pin 11/13). That is, since the FGOUT signal is a mixture of three position sensor outputs (Ha, Hb and Hc), its frequency is six times that of each position sensor signal. This enables the TA7712P/PG and TA7712F/FG to achieve sufficient control characteristics even with the F-V (frequency to voltage) convertor using a monostable multivibrator (MMV). The difference between them and the TA7713P/PG is that the stop function is automated in the TA7713P/PG, while it is operated by the external signal in the TA7712P/PG. The following sections describe the applications of the TA7713P/PG. (1) Functional Description on the FGOUT (pin 11/13) and TFG (pin 12/14) pins Q1 and Q2 in Figure 1 comprise a monostable multivibrator. The position sensor input signals, Ha, Hb and Hc, are combined together and applied to the base of Q2 after squaring waveform with a flip-flop, FF. The output pulse width of the MMV consisting of Q1 and Q2 is determined by R2 and C2, which are connected to TFG (pin 12/14).The square wave having the pulse width that is determined by C2 and R2 is generated from FGOUT (pin 11/13). The frequency of this square wave, which is proportional to that of the rotation signal, is six times the frequency of each position sensor signal. (Six pulses per electrical revolution) The F-V conversion is performed by connecting the FGOUT output to a low-pass fileter and integrating the output signal. POSITION SENSOR Figure 1 5 2007-9-11 TA7712P/PG/F/FG High: Start 15 kΩ 33 kΩ 15 kΩ 33 kΩ 33 kΩ 15 kΩ (2) Each Control Input High: Positive Torque Low: Brake Low: Negative Torque Figure 2 START / STOP CW / CCW BRAKE H H H Positive Torque mode H L H Negative Torque mode H or L H or L L Break mode L H or L H Stop mode Note: + + OUTPUT − − In Stop mode, all outputs of La through Lc and La through Lc are disabled. + + In Break mode, outputs of La through Lc are enabled. (Source mode) (3) Output Circuitry As shown in the block diagram, the high-side outputs come from the emitters of Darlington-connected PNP and NPN transistors, and the low-side outputs are open-collectors of NPN transistors. Connect external transistors in the same manner as shown in the application circuit. (4) Position Sensor Iinputs The input voltage swing should be between 20 mVPP and 500 mVPP. Waveforms of the Hb and Hc input signals behave the same. 20 mVpp – 500 mVpp 6 2007-9-11 TA7712P/PG/F/FG ABSOLUTE MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTICS SYMBOL RATING UNIT VCC 8 V Output Current IO ±25 mA Position Sensor Input Voltage (Tj = 25°C) VH 500 mVp−p Power Supply Voltage TA8412P/PG Power Dissipation TA8412F/FG 1.2 PD (Note) W 0.5 Operating Temperature Topr −30 to 75 °C Storage Temperature Tstg −55 to 150 °C Note: Measured for the IC only ELECTRICAL CHARACTERISTICS (Unless otherwise specified, VCC = 5 V, Ta = 25°C) CHARACTERISTICS Operating Supply Voltage VCC (opr) ― MIN TYP. MAX UNIT 4.75 5.00 5.25 V In Stop mode ― 3.4 6.0 Output: open ― 17.0 26.0 VSAT (U−1) RL = 200 Ω ― 1.3 2.0 VSAT (U−2) RL = 2 kΩ ― 1.0 1.3 RL = 200 Ω ― 0.8 1.2 RL = 2 kΩ ― 0.18 0.4 ― ― 100 ― ― 100 2.0 ― 4.5 V 20 ― ― mVp−p 2 7 15 mV ICC2 High Side Saturation Voltage VSAT (L−1) Low Side Position Sensor Input TEST CIR− CUIT ICC1 Power Supply Current Leakage Current SYMBOL 1 2 VSAT (L−2) High Side IL (U) Low Side IL (L) In-phaseInput Voltage Range TEST CONDITIONS 2 CMRH Input Sensitivity VH Input Hysteresis VH−Hys ― mA V μA Operating Input Voltage H VIN R (H) 2 4.0 ― ― L VIN R (L) 2 ― ― 1.0 Input Current L IIN R 2 ― ― 200 Operating Input CW / CCW Voltage Input (FWD / REV) Input Current H VIN C (H) 4.0 ― ― L VIN C (L) ― ― 1.0 L IIN C ― ― 200 Operating Input Voltage H VIN B (H) 4.0 ― ― L VIN B (L) ― ― 1.0 Input Current H IIN B ― ― 200 μA Output Current H IFGH 3 80 ― ― μA Output Voltage L VFGL 3 IFG = 0.3 mA ― ― 0.4 V τFG 3 C = 0.1 μF, R = 10 kΩ 0.9 1.0 1.1 ms START Input (RUN) BRAKE Input (BRAKE) FG Output Pulse Width VIN R = 1.0 V 2 VIN C = 1.0 V 2 VIN N = 1.0 V 7 V μA V μA V 2007-9-11 TA7712P/PG/F/FG 0.1 μF 15 kΩ 10 kΩ TEST CIRCUIT 1 TA7712P/PG/F/FG VRUN VF / R VBRAKE Va Vb Vc ICC1 1.0 V 1.0 V 1.0 V 2.48 V 2.48 V 2.52 V ICC2 4.0 V 4.0 V 4.0 V 2.52 V 2.48 V 2.52 V 8 REMARKS 2007-9-11 TA7712P/PG/F/FG 0.1 μF 15 kΩ 10 kΩ TEST CIRCUIT 2 Hall Amplifier Input To check the input sensitivity and input hysteresis, set Va, Vb and Vc to 2.5 V ± 20 mV as shown below, and measure the leakage current and saturation voltage individually. TA7712P/PG/F/FG INPUT CONDITION Vc RUN MEASUREMENT ITEM Lb+ Lb− F/R BRAKE La+ La− Lc+ Lc− VIN R (H) VIN C (H) VIN B (H) LEAK SAT LEAK LEAK SAT LEAK 2.48 V ― ― ― SAT LEAK ― SAT LEAK ― 2.52 V ― ― ― ― ― SAT ― ― SAT Va Vb 2.52 V 2.48 V 2.48 V 2.48 V 2.52 V 2.48 V 2.48 V LEAK: Measurement of a leakage current SAT: Measurement of a saturation voltage To verify the characteristics of the VIN R (L), VIN C (L) and VIN B (L) voltages, the output voltage should be checked while each respective terminal is set at 1.0 (V). 9 2007-9-11 TA7712P/PG/F/FG 20 kΩ 0.1 μF 10 kΩ 15 kΩ TEST CIRCUIT 3 TA7712P/PG/F/FG z Calculate the IFGH current from the output voltage obtained when SW2 is connected to b. z Measure VFGL and τFG when SW2 is connected to a. TIMING CHART FOR CLOCKWISE ROTATION CLOCK: 360 Hz 10 2007-9-11 TA7712P/PG/F/FG BASIC APPLICATION CIRCUIT 0.1 μF 10 kΩ TA7712P/PG/F/FG 11 2007-9-11 TA7712P/PG/F/FG APPLICATION CIRCUIT 10 μF VM = 10 – 60 V TA7712P/PG/F/FG Note: The IC may be destroyed in case of a short-circuit across outputs, a short-circuit to power supply, a short-circuit to ground, or a short-circuit between neighboring pins. This possibility should be fully considered in the design of the output, VCC, VM and ground lines. ① TA7712P/PG ② TA7712F/FG No heat sink 12 2007-9-11 TA7712P/PG/F/FG PACKAGE DIMENSIONS DIP20−P−300−2.54A Unit: mm Weight: 2.25 g (Typ.) 13 2007-9-11 TA7712P/PG/F/FG PACKAGE DIMENSIONS SSOP24−P−300−1.00 Unit: mm Weight: 0.32 g (Typ.) 14 2007-9-11 TA7712P/PG/F/FG Notes on Contents 1. Block Diagrams Some of the functional blocks, circuits, or constants in the block diagram may be omitted or simplified for explanatory purposes. 2. Equivalent Circuits The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes. 3. Timing Charts Timing charts may be simplified for explanatory purposes. 4. Application Circuits The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage. Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. 5. Test Circuits Components in the test circuits are used only to obtain and confirm the device characteristics. These components and circuits are not guaranteed to prevent malfunction or failure from occurring in the application equipment. IC Usage Considerations Notes on handling of ICs [1] The absolute maximum ratings of a semiconductor device are a set of ratings that must not be exceeded, even for a moment. Do not exceed any of these ratings. Exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. [2] Do not insert devices in the wrong orientation or incorrectly. Make sure that the positive and negative terminals of power supplies are connected properly. Otherwise, the current or power consumption may exceed the absolute maximum rating, and exceeding the rating(s) may cause the device breakdown, damage or deterioration, and may result injury by explosion or combustion. In addition, do not use any device that is applied the current with inserting in the wrong orientation or incorrectly even just one time. Points to remember on handling of ICs Back-EMF When a motor rotates in the reverse direction, stops or slows down abruptly, a current flows back to the motor’s power supply due to the effect of back-EMF. If the current sink capability of the power supply is small, the device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system design. 15 2007-9-11 TA7712P/PG/F/FG RESTRICTIONS ON PRODUCT USE 20070701-EN • The information contained herein is subject to change without notice. • TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the “Handling Guide for Semiconductor Devices,” or “TOSHIBA Semiconductor Reliability Handbook” etc. • The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.).These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury (“Unintended Usage”). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in his document shall be made at the customer’s own risk. • The products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. • The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patents or other rights of TOSHIBA or the third parties. • Please contact your sales representative for product-by-product details in this document regarding RoHS compatibility. Please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. Toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations. • The products described in this document are subject to foreign exchange and foreign trade control laws. 16 2007-9-11