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TA8492P 2002-01-31 1 toshiba bipolar linear integrated circuit TA8492P 3-phase full-wave brushless dc motor driver ic the TA8492P is a 3-phase, full-wave, supply voltage-control motor driver ic. features output current: i o (max) = 1.5 a supply voltage control motor driver cw/ccw/stop function operating voltage range: v cc (opr.) = 7~18 v v s (opr.) = 0~18 v block diagram weight: 1.11 g (typ.) 4, 5, 12, 13 3st 3 frc v cc 14 7 6 matrix 11 10 9 8 h a h a h b h b h c h c tsd 16 2 15 1 l c l b l a v s gnd
TA8492P 2002-01-31 2 pin function pin no. symbol function 1 l c c-phase drive output pin 2 l a a-phase drive output pin 3 3st switching cw/ccw/stop 4 gnd 5 gnd 6 h a a-phase negative hall signal input pin 7 h a a-phase positive hall signal input pin 8 h c c-phase negative hall signal input pin 9 h c c-phase positive hall signal input pin 10 h b b-phase negative hall signal input pin 11 h b b-phase positive hall signal input pin 12 gnd 13 gnd 14 v cc supply voltage pin for control circuits 15 l b b-phase drive output pin 16 v s supply voltage pin for output circuit function hall input output frs h a h b h c l a l b l c 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 foward 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 reverse 0 0 1 m l h 1 0 1 1 0 0 1 1 0 0 1 0 0 1 1 stop 0 0 1 high impedance
TA8492P 2002-01-31 3 maximum ratings (ta 25c) characteristics symbol rating unit v s 20 v supply voltage v cc 20 v output current i o 1.5 a 1.4 (note 1) power dissipation p d 2.7 (note 2) w operating temperature t opr 30~85 c storage temperature t stg 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: over 60%) electrical characteristics (ta 25c, v cc v s 12 v) characteristics symbol test circuit test condition min typ. max unit i cc-1 v cc 12 v, 3st: gnd, v s : open 5.0 7.0 i cc-2 v cc 18 v, 3st: gnd, v s : open 6.0 9.0 supply current i cc-3 1 stop (3st v cc ) 2.5 4 ma upper v sat (u) 2 i o 1 a (source current) 1.35 1.7 output saturation voltage lower v sat (l) 3 i o 1 a (sink current) 0.4 0.6 v upper i l (u) 4 v s 20 v 50 output leak current lower i l (l) 5 v s 20 v 50 a input sensitivity v h 6 20 400 mv p-p hall amp. common mode input voltage range v cmrh 7 2 v cc 3.5 v stop v stp v cc 0.4 v cc cw v fw 2.5 6.5 cw/ccw control operation voltage ccw v rv 6 0 0.4 v thermal shut-down operating temperature t sd 160 c
TA8492P 2002-01-31 4 functional description hall amp. circuit the hall amp is a high-gain amp. the input sensitivity is 20 mv p-p (min). make sure that the input amplitude does not exceed 400 mv p-p . the common mode voltage v cmrh 2.0 to v cc 3.5 v. cw/ccw/stop control circuit in reverse mode, the control input (3st) voltage range is v rv 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 v cc as possible. in forward mode, toshiba recommend the input voltage be v cc /2. output circuit the output circuit uses voltage control where the upper and lower output transistors are saturated and the output current is controlled by the v s voltage. to reduce switching noise, connect a snubber capacitor to the output circuit. thermal shut-down circuit the circuit turns off output when t j 160c (typ.) (according to design specification) ha ha (upper) l a v s (lower) l a 3st ha ha 20 mv p-p ~400 mv p-p
TA8492P 2002-01-31 5 handling precautions (cw/ccw/stop control circuit) a) at 3st input, because the input voltage ranges for v rv (reverse mode) and v stp (stop mode) are narrow, make sure no impedance is caused between the ic v cc and gnd pins. do not connect an input resistor to the 3st pin because it causes voltage offset. b) when controlling the rotation direction using 3st input, switch the direction from reverse to stop mode or vice versa with v s 0 v, because punch-through current may be generated at output. (hall amp. circuit) a hall ic input amplitude of over 400 mv p-p causes an output function error. make sure the amplitude is within the specified range. (output circuit) utmost care is necessary in the design of the output fine, v s , v cc and gnd line since ic may be destroyed due to short-circuit between output air contamination fault, or fault by improper grounding external parts symbol function recommended value remarks c 1 power supply line oscillation prevention 4.7 f c 2 power supply line oscillation prevention 4.7 f c 3 output noise reduction 4.7 f (note 3) r 1 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 characteristic.
TA8492P 2002-01-31 6 test circuit 1. i cc1 , i cc2 , i cc3 i cc1 : input v ha , v hb , v hc (6.01 v/5.99 v). v cc 12 v/v 3st gnd i cc2 : input v ha , v hb , v hc (6.01 v/5.99 v). v cc 18 v/v 3st gnd i cc3 : input v ha , v hb , v hc (6.01 v/5.99 v). v cc 12 v/v 3st v cc 2. v sat (u) v sat (u) : input v ha , v hb , v hc (6.01 v/5.99 v), check that the output function is at high level, then measure phases a, b, and c. v hc v hb 15 13 11 12 9 10 l b v cc gnd gnd h b h b h c 1 3 2 4 6 5 8 7 l c l a 3st gnd gnd h a h a h c 4.7 f 4.7 f v cc v ha 6 v v 3st 16 v s 14 v hc v hb 15 13 11 12 9 10 l b v cc gnd gnd h b h b h c 1 3 2 4 6 5 8 7 l c l a 3st gnd gnd h a h a h c i o 1.0 a 4.7 f 12 v v ha 6 v 16 v s 14 12 v v 4.7 f
TA8492P 2002-01-31 7 3. v sat (l) v sat (l) : input v ha , v hb , v hc (6.01 v/5.99 v) and check output function is ?l?. (a-phase, b-phase, c-phase) 4. i l (u) i l (u) : check output function is high impedance at 3st v cc . (a-phase, b-phase, c-phase) v hc v hb 15 13 11 12 9 10 l b v cc gnd gnd h b h b h c 1 3 2 4 6 5 8 7 l c l a 3st gnd gnd h a h a h c i o 1.0 a 4.7 f 12 v v ha 6 v 16 v s 14 12 v v 4.7 f v hc v hb 15 13 11 12 9 10 l b v cc gnd gnd h b h b h c 1 3 2 4 6 5 8 7 l c l a 3st gnd gnd h a h a h c 4.7 f 12 v v ha 6 v 16 v s 14 18 v a 4.7 f v cc
TA8492P 2002-01-31 8 5. i l (l) i l (l) : check output function is high impedance at 3st v cc . (a-phase, b-phase, c-phase) 6. v h , v stp , v fw , v rv v h : input v ha , v hb , v hc (6.01 v/5.99 v) and check output function. (a-phase, b-phase, c-phase) at v 3st gnd. v stp : when v 3st is 8.5 v, input v ha , v hb , v hc (6.01 v/5.99 v), fix the output function, then check that the output function is at high impedance. v fw : input v ha , v hb , v hc (6.01 v/5.99 v) and check output function is forward mode. at v 3st 2.5 v/6.5 v. v hc v hb 15 13 11 12 9 10 l b v cc gnd gnd h b h b h c 1 3 2 4 6 5 8 7 l c l a 3st gnd gnd h a h a h c 4.7 f 12 v v ha 6 v 16 v s 14 12 v 4.7 f v v cc v hc v hb 15 13 11 12 9 10 l b v cc gnd gnd h b h b h c 1 3 2 4 6 5 8 7 l c l a 3st gnd gnd h a h a h c 4.7 f 12 v v ha 6 v 16 v s 14 12 v 4.7 f v v 3st
TA8492P 2002-01-31 9 v rv : input v ha , v hb , v hc (6.01 v/5.99 v) and check output function is reverse mode. at v 3st 0.4 v. 7. v cmrh v cmrh : measure the i cmrh gap between v cmrh 2 v and 8.5 v. 15 13 11 12 9 10 l b v cc gnd gnd h b h b h c 1 3 2 4 6 5 8 7 l c l a 3st gnd gnd h a h a h c 4.7 f 12 v 16 v s 14 12 v 4.7 f v cmrh a i cmrh
TA8492P 2002-01-31 10 application circuit 4, 5, 12, 13 3st 3 frc v cc 14 7 6 matrix 11 10 9 8 h a h a h b h b h c h c tsd 16 2 15 1 l c l b l a v s gnd c 1 12 v r 1 v cc r 1 c 3 c 2 12 v
TA8492P 2002-01-31 11 package dimensions weight: 1.11 g (typ.)
TA8492P 2002-01-31 12 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. the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba corporation for any infringements of intellectual property or other rights of the third parties which may result from its use. no license is granted by implication or otherwise under any intellectual property or other rights of toshiba corporation or others. the information contained herein is subject to change without notice. 000707eb a restrictions on product use

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