TA8492P/PG TOSHIBA Bipolar Linear Integrated Circuit TA8492P/PG Three-Phase Full-Wave Brushless DC Motor Driver IC The TA8492P/PG is a three-phase full-wave supply voltage control motor driver IC. Features • Output current: IO (max) = 1.5 A • Supply voltage control motor driver • CW/CCW/STOP function • Operating voltage range: VCC (opr.) = 7~18 V VS (opr.) = 0~18 V Weight: 1.11 g (typ.) TA8492PG: The TA8492PG is Pb-free product. The following conditions apply to solderability: *Solderability 1. Use of Sn-63Pb solder bath *solder bath temperature = 230ºC *dipping time = 5 seconds *number of times = once *use of R-type flux 2. Use of Sn-3.0Ag-0.5Cu solder bath *solder bath temperature = 245ºC *dipping time = 5 seconds *number of times = once *use of R-type flux Block Diagram 3ST VCC 3 14 16 VS FRC Ha + − TSD 7 2 La Hb 11 15 Lb + − Hb 10 Hc Hc + − Matrix 6 Ha 1 Lc 9 8 4, 5, 12, 13 GND 1 2004-07-27 TA8492P/PG Pin Function Pin No. Symbol 1 Lc c-phase drive output pin 2 La a-phase drive output pin 3 3ST Switching CW/CCW/Stop 4 GND ⎯ 5 GND ⎯ 6 Ha 7 Ha 8 Hc − + − + Function a-phase negative hall signal input pin a-phase positive hall signal input pin c-phase negative hall signal input pin 9 Hc 10 Hb 11 Hb 12 GND 13 GND 14 VCC 15 Lb b-phase drive output pin 16 VS Supply voltage pin for output circuit − + c-phase positive hall signal input pin b-phase negative hall signal input pin b-phase positive hall signal input pin ⎯ ⎯ Supply voltage pin for control circuits Function Hall Input FRS Forward Output Ha Hb Hc La Lb Lc 1 0 1 L H M 1 0 0 L M H 1 1 0 M L H 0 1 0 H L M 0 1 1 H M L 0 0 1 M H L 1 0 1 H L M 1 0 0 H M L 1 1 0 M H L 0 1 0 L H M 0 1 1 L M H 0 0 1 M L H 1 0 1 1 0 0 1 1 0 0 1 0 0 1 1 0 0 1 Reverse Stop High Impedance 2 2004-07-27 TA8492P/PG Maximum Ratings (Ta = 25°C) Characteristic Supply voltage Output current Symbol Rating Unit VS 20 V VCC 20 V 1.5 A IO 1.4 (Note 1) Power dissipation PD W 2.7 (Note 2) Operating temperature Topr −30~85 °C Storage temperature Tstg −55~150 °C Note 1: Not mounted on the PCB Note 2: Mounted on the PCB (PCB area: 50 × 50 × 0.8 mm cu area: 60% or greater) Electrical Characteristics (Ta = 25°C, VCC = VS = 12 V) Characteristic Symbol Test Circuit ICC-1 Supply current ICC-2 1 ICC-3 Output saturation voltage Typ. Max VCC = 12 V, 3ST: GND, VS: Open ⎯ 5.0 7.0 VCC = 18 V, 3ST: GND, VS: Open ⎯ 6.0 9.0 Stop (3ST = VCC) ⎯ 2.5 4 Unit mA Upper VSAT (U) 2 IO = 1 A (source current) ⎯ 1.35 1.7 VSAT (L) 3 IO = 1 A (sink current) ⎯ 0.4 0.6 Upper IL (U) 4 VS = 20 V ⎯ ⎯ 50 Lower IL (L) 5 VS = 20 V ⎯ ⎯ 50 VH 6 ⎯ 20 ⎯ 400 mVp-p VCMRH 7 ⎯ 2 ⎯ VCC − 3.5 V ⎯ VCC − 0.4 ⎯ VCC ⎯ 2.5 ⎯ 6.5 ⎯ 0 ⎯ 0.4 ⎯ ⎯ 160 ⎯ Input sensitivity Common mode input voltage range CW/CCW control operation voltage Min Lower Output leak current Hall amp. Test Condition Stop VSTP CW VFW CCW VRV Thermal shutdown operating temperature TSD 6 ⎯ 3 V µA V °C 2004-07-27 TA8492P/PG Functional Description • Hall amp. circuit + − Ha Ha The Hall amp is a high-gain amp. The input sensitivity is 20 mVp-p (min). Make sure that the input amplitude does not exceed 400 mVp-p. The common-mode voltage VCMRH = 2.0 to VCC − 3.5 V. + Ha − Ha 20 mVp-p~400 mVp-p • CW/CCW/Stop control circuit 3ST In Reverse mode, the control input (3ST) voltage range is VRV = 0 to 0.4 V. However, keep the voltage as close to the IC GND as possible (see the application circuit diagram). Similarly, in Stop mode, keep the voltage as close to the IC VCC as possible. In Forward mode, Toshiba recommend an input voltage of VCC/2. • Output circuits VS La La (Lower) (Upper) The output circuit uses voltage control where the upper and lower output transistors are saturated and the output current is controlled by the VS voltage. To reduce switching noise, connect a snubber capacitor to the output circuit. • Thermal shutdown circuit The circuit turns off output when Tj = 160°C (typ.) (according to design specification) 4 2004-07-27 TA8492P/PG Handling Precautions CW/CCW/Stop Control Circuit a) At 3ST input, because the input voltage ranges for VRV (Reverse mode) and VSTP (Stop mode) are narrow, make sure no impedance is caused between the IC VCC and GND pins. Do not connect an input resistor to the 3ST pin since doing so will cause voltage offset. b) When controlling the rotation direction using 3ST input, switch the direction from Reverse to Stop mode or vice versa with VS = 0 V to eliminate the risk of punch-through current being generated at output. Hall Amp. Circuit A Hall IC input amplitude of over 400 mVp-p will cause an output function error. Make sure the amplitude is within the specified range. Output Circuits Particular care is necessary in the design of the output, VS, VCC and GND lines since the IC may be destroyed by short circuits between outputs, air contamination faults, or faults resulting from improper grounding. External Parts Symbo l Function Recommended Value Remarks C1 Power supply line oscillation prevention 4.7 µF ⎯ C2 Power supply line oscillation prevention 4.7 µF ⎯ C3 Output noise reduction 4.7 µF (Note 3) R1 Hall bias ⎯ (Note 4) Note 3: Set an appropriate value depending on the motor and use conditions. Set an appropriate value so that the Hall IC output common-mode input voltage and amplitude fall within the specified ranges in the Electrical Characteristics table. Note 4: Be sure to set this bias so that the Hall element output amplitude and common-mode input voltage fall within the ranges specified in the table of electrical characteristics. 5 2004-07-27 TA8492P/PG Test Circuits 1. ICC1, ICC2, ICC3 4.7 µF VCC VHb + VHc + 4.7 µF 16 15 14 13 12 11 10 9 VS Lb VCC GND GND Hb Hb Hc Lc La 3ST GND GND Ha 1 2 3 4 5 6 + − Ha − + − 8 6V V3ST 7 Hc + VHa • + + + + + + + • ICC1: Input VHa , VHb , VHc (6.01 V/5.99 V). VCC = 12 V/V3ST = GND + + + ICC2: Input VHa , VHb , VHc (6.01 V/5.99 V). VCC = 18 V/V3ST = GND • ICC3: Input VHa , VHb , VHc (6.01 V/5.99 V). VCC = 12 V/V3ST = VCC 2. VSAT (U) VHb 12 V + VHc + IO = 1.0 A 4.7 µF 12 V V 4.7 µF 16 15 14 13 12 11 10 9 VS Lb VCC GND GND Hb Hb Hc Lc La 3ST GND GND Ha 1 2 3 4 5 6 + − Ha − + − 8 6V 7 Hc + VHa • + + + + VSAT (U): Input VHa , VHb , VHc (6.01 V/5.99 V), check that the output function is at High level, then measure phases a, b, and c. 6 2004-07-27 TA8492P/PG 3. VSAT (L) 4.7 µF IO = 1.0 A 12 V VHb 12 V V + VHc + 4.7 µF 16 15 14 13 12 11 10 9 VS Lb VCC GND GND Hb Hb Hc Lc La 3ST GND GND Ha 1 2 3 4 5 6 + − Ha − + − 8 6V 7 Hc + VHa • + + + + VSAT (L): Input VHa , VHb , VHc (6.01 V/5.99 V) and check that the output function is “L”. (a-phase, b-phase, c-phase) 4. IL (U) 18 V VHb 12 V + VHc + 4.7 µF A 4.7 µF 16 15 14 13 12 11 10 9 VS Lb VCC GND GND Hb Hb Hc Lc La 3ST GND GND Ha 1 2 3 4 5 6 + − Ha − + − 8 6V 7 Hc + VCC • VHa + IL (U): Check that the output function is high impedance at 3ST = VCC. (a-phase, b-phase, c-phase) 7 2004-07-27 TA8492P/PG 5. IL (L) 12 V VHb 12 V + VHc + 4.7 µF V 4.7 µF 16 15 14 13 12 11 10 9 VS Lb VCC GND GND Hb Hb Hc Lc La 3ST GND GND Ha 1 2 3 4 5 6 + − Ha − + − 8 6V 7 Hc + VCC • VHa + IL (L): Check that the output function is high impedance at 3ST = VCC. (a-phase, b-phase, c-phase) 6. VH, VSTP, VFW, VRV 12 V VHb 4.7 µF 12 V V + VHc 4.7 µF 16 15 14 13 12 11 10 9 VS Lb VCC GND GND Hb Hb Hc Lc La 3ST GND GND Ha 1 2 3 4 5 6 + − Ha − + + Hc + − 8 6V V3ST 7 VHa + + + + • VH: • VSTP: When V3ST is 8.5 V, input VHa , VHb , VHc (6.01 V/5.99 V), fix the output function, then check that the output function is at high impedance. • VFW: Input VHa , VHb , VHc (6.01 V/5.99 V) and check that the output function is forward mode. AT V3ST = 2.5 V/6.5 V. Input VHa , VHb , VHc (6.01 V/5.99 V) and check the output function. (a-phase, b-phase, c-phase) AT V3ST = GND. + + + + + + 8 2004-07-27 TA8492P/PG • + + + VRV: Input VHa , VHb , VHc (6.01 V/5.99 V) and check that the output function is reverse mode. AT V3ST = 0.4 V. 7. VCMRH 12 V 4.7 µF 12 V 4.7 µF 16 15 14 13 12 11 10 9 VS Lb VCC GND GND Hb Hb Hc Lc La 3ST GND GND Ha 1 2 3 4 5 6 − Ha 7 − + Hc − 8 A • + VCMRH ICMRH + VCMRH: Measure the ICMRH gap between VCMRH = 2 V and 8.5 V. 9 2004-07-27 TA8492P/PG Application Circuit 12 V C1 3ST 3 VCC 14 VCC 16 FRC Ha Ha Hb Hb Hc Hc TSD 12 V C2 + − 7 + 6 − 11 + 10 − 9 2 Matrix R1 VS 15 1 La Lb Lc C3 8 R1 4, 5, 12, 13 GND 10 2004-07-27 TA8492P/PG Package Dimensions Weight: 1.11 g (typ.) 11 2004-07-27 TA8492P/PG Notes of Contents 1. Block Diagrams Some functional blocks, circuits, or constants may be omitted or simplified in the block diagram 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. Maximum Ratings The absolute maximum ratings of a semiconductor device are a set of specified parameter values that must not be exceeded during operation, even for an instant. If any of these ratings are exceeded during operation, the electrical characteristics of the device may be irreparably altered and the reliability and lifetime of the device can no longer be guaranteed. Moreover, any exceeding of the ratings during operation may cause breakdown, damage and/or degradation in other equipment. Applications using the device should be designed so that no maximum rating will ever be exceeded under any operating conditions. Before using, creating and/or producing designs, refer to and comply with the precautions and conditions set forth in this document. 5. Application Circuits The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially in the mass production design phase. In furnishing these examples of application circuits, Toshiba does not grant the use of any industrial property rights. 6. Test Circuits Components in the test circuits are only used to obtain and confirm the device characteristics. These components and circuits are not guaranteed to prevent malfunction or failure in application equipment. Handling of the IC Ensure that the product is installed correctly to prevent breakdown, damage and/or degradation in the product or equipment. Overcurrent Protection and Heat Protection Circuits These protection functions are intended only as a temporary means of preventing output short circuits or other abnormal conditions and are not guaranteed to prevent damage to the IC. If the guaranteed operating ranges of this product are exceeded, these protection features may not operate and some output short circuits may result in the IC being damaged. The overcurrent protection feature is intended to protect the IC from temporary short circuits only. Short circuits persisting over long periods may cause excessive stress and damage the IC. Systems should be configured so that any overcurrent condition will be eliminated as soon as possible. Counter-electromotive Force When the motor reverses or stops, the effect of counter-electromotive force may cause the current to flow to the power source. If the power supply is not equipped with sink capability, the power and output pins may exceed the maximum rating. The counter-electromotive force of the motor will vary depending on the conditions of use and the features of the motor. Therefore make sure there will be no damage to or operational problem in the IC, and no damage to or operational errors in peripheral circuits caused by counter-electromotive force. 12 2004-07-27 TA8492P/PG RESTRICTIONS ON PRODUCT USE 030619EBA • The information contained herein is subject to change without notice. • 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 patent or patent rights of TOSHIBA or others. • 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 this document shall be made at the customer’s own risk. • The products described in this document are subject to the foreign exchange and foreign trade laws. • TOSHIBA products should not be embedded to the downstream products which are prohibited to be produced and sold, under any law and regulations. 13 2004-07-27