1/8 www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. stepping motor driver series micro step 36v stepping motor drivers BD63843EFV, bd63847efv description BD63843EFV / bd63847efv are stepping motor dr ivers of 1/16 micro step(sixteenth step) drive. as for its basic function, it is a low power consumption bipolar pwm constant current-drive driver with power supply rated voltage of 36v and rated output current (dc) of 1.0a, 2.0a. t he input interface is clk-in type. there are step modes of full step & half step, eighth step, sixteenth step mode by internal dac (d-a converter), and for current decay mode, the ratio of fast decay & slow deca y can be freely set, so the optimum control conditions for every motor can be realized. in addition, being able to drive wi th one system of power supply makes contribution to the set design?s getting easy. feature 1) single power supply input (rated voltage of 36v) 2) rated output current:(dc) 1.0a, 2.0a 3) low on resistance dmos output 4) clk-in drive mode 5) pwm constant current c ontrol (other oscillation) 6) built-in spike noise cancel function (external noise filter is unnecessary) 7) full step, half step, ei ghth step, sixt eenth step drive 8) timing free for changing step modes 9) current decay mode switching function (l inearly variable fast/slow decay ratio) 10) normal rotation & reverse rotation switching function 11) power save function 12) built-in logic input pull-down resistor 13) power-on reset function 14) thermal shutdown circuit (tsd) 15) over current protection circuit (ocp) 16) under voltage lock out circuit (uvlo) 17) over voltage lock out circuit (ovlo) 18) ghost supply prevention (protects against ma lfunction when power supply is disconnected) 19) electrostatic discharge: 8kv (hbm specification) 20) adjacent pins short protection 21) inverted mounting protection 22) microminiature, ultra-thin and high heat-radiation (exposed metal type) htssop-b28 package 23) pin-compatible line-up (in add ition, pin-compatible to bd6387 efv series) application ppc, multi-function printer, laser beam printer, ink jet prin ter, monitoring camera, web ca mera, sewing machine, photo printer, fax, scanner, mini printer, toy, and robot etc. no.12009eat08 www.datasheet.co.kr datasheet pdf - http://www..net/
technical note 2/8 BD63843EFV, bd63847efv www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. absolute maximum ratings (ta=25c) item symbol bd63847efv BD63843EFV unit supply voltage v cc1,2 -0.3~+36.0 v power dissipation pd 1.45 1 w 4.70 2 w input voltage for control pin v in -0.3~+7.0 v rnf voltage v rnf 0.7 v output current i out 2.0 3 1.0 3 a/phase output current (peak) 4 i outpeak 2.5 3 1.5 3 a/phase operating temperature range t opr -25~+85 c storage temperature range t stg -55~+150 c junction temperature t jmax +150 c 1 70mm70mm1.6mm glass epoxy board. derating in done at 11.6mw/c for operating above ta=25c. 2 4-layer recommended board. derating in done at 37.6mw/c for operating above ta=25c. 3 do not, however exceed pd, aso and tjmax=150c. 4 pulse width tw Q 1ms, duty20%. operating conditions (ta= -25~+85c) 5 do not, however exceed pd, aso. electrical characteristics (unless otherwise specified ta=25c, v cc1,2 =24v) item symbol limit unit condition min. typ. max. whole circuit current at standby i ccst - 1.0 2.5 ma ps=l circuit current i cc - 2.5 5.0 ma ps=h, vref=3v control input (clk, cw_ccw, mode0, mode1, enable, ps) h level input voltage v inh 2.0 - - v l level input voltage v inl - - 0.8 v h level input current i inh 35 50 100 a v in =5v l level input current i inl -10 0 - a v in =0v output (out1a, out1b, out2a, out2b) output on resistance (bd63847efv) r on - 0.85 1.10 ? i out =1.5a, sum of upper and lower output on resistance (BD63843EFV) r on - 1.90 2.47 ? i out =0.5a, sum of upper and lower output leak current i leak - - 10 a current control rnfxs input current i rnfs -2.0 -0.1 - a rnfxs=0v rnfx input current i rnf -40 -20 - a rnfx=0v vref input current i vref -2.0 -0.1 - a vref=0v vref input voltage range v ref 0 - 3.0 v mth input current i mth -2.0 -0.1 - a mth=0v mth input voltage range v mth 0 - 3.5 v minimum on time (blank time) t onmin 0.3 0.8 1.5 s c=1000pf, r=39k ? comparator threshold 1 v cth1 0.570 0.600 0.630 v vref=3v, 100% comparator threshold 2 v cth2 0.403 0.424 0.445 v vref=3v, 70.71% comparator threshold 3 v cth3 0.196 0.230 0.264 v vref=3v, 38.27% item symbol bd63847efv BD63843EFV unit supply voltage v cc1,2 19~28 v input voltage for control pin v in 0~5.5 v output current i out 1.7 5 0.7 5 a/ www.datasheet.co.kr datasheet pdf - http://www..net/
technical note 3/8 BD63843EFV, bd63847efv www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. terminal function and application circuit diagram pin no. pin name function pin no. pin name function 1 gnd ground terminal 15 clk clock input terminal for advancing the electrical angle. 2 out1b h bridge output terminal 16 cw_ccw motor rotating direction setting terminal 3 rnf1 connection terminal of resistor for out p ut current detection 17 test terminal for testing ( used b y connectin g with gnd ) 4 rnf1s input terminal of current limit comparator 18 mode0 motor excitation mode setting terminal 5 out1a h bridge output terminal 19 mode1 motor excitation mode setting terminal 6 nc non connection 20 enable output enable terminal 7 vcc1 power supply terminal 21 nc non connection 8 nc non connection 22 vcc2 power supply terminal 9 gnd ground terminal 23 nc non connection 10 cr connection terminal of cr for setting cho pp in g fre q uenc y 24 out2a h bridge output terminal 11 nc non connection 25 rnf2s input terminal of current limit comparator 12 mth current decay mode setting terminal 26 rnf2 connection terminal of resistor for output current detection 13 vref output current value setting terminal 27 out2b h bridge output terminal 14 ps power save terminal 28 nc non connection fig.1 block diagram & application circuit diagram 0.2 ? 0.2 ? terminal for testing. connect to gnd. resistor for current. detecting. setting range is 0.1 ? ~0.3 ? . refer to p.6 for detail. 39k ? 1000pf set the chopping frequency. setting range is c:470pf~1500pf r:10k ? ~200k ? refer to p.7, 8 for detail. bypass capacitor. setting range is 100uf~470uf(electrolytic) 0.01uf~0.1uf(multilayer ceramic etc.) refer to p.6 for detail. be sure to short vcc1 & vcc2. resistor for current. detecting. setting range is 0.1 ? ~0.3 ? . refer to p.6 for detail. predriver 7 vcc1 blank time pwm control translator 4bit dac tsd uvlo regulator reset 9 gnd 10 c r 12 mth 14 ps 15 cl k 18 mode0 19 mode1 16 cw_ccw 20 enable vref 13 2 out1b 5 out1a 3 rnf1 22 vcc2 24 out2a 1 gnd 27 out2b 26 rnf2 17 test control logic mix decay control ocp osc rnf1s 4 rnf2s 25 ovlo rnf1s rnf2s 100f 0.1f set the output currenet. input by resistor divison. refer to p.6 for detail. set the current decay mode. slow decay ? connect to gnd. mix decay ? input by resistor divison. refer to p.7, 9 for detail. logic input terminal. refer to p.5 for detail. power save terminal refer to p.5 for detail. www.datasheet.co.kr datasheet pdf - http://www..net/
technical note 4/8 BD63843EFV, bd63847efv www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. points to noti ce for terminal description clk/clock input terminal for advancing the electrical angle clk is reflected at rising edge. the electrical angle adv ances by one for each clk input.motor?s misstep will occur if noise is picked up at the clk terminal, so please design the pattern in such a way that there is no noise plunging. mode0,mode1/motor excitation mode setting terminal set the step mode. mode0 mode1 step mode l l full step h l half step l h 1/8 step h h 1/16 step cw_ccw /motor rotating direction setting terminal set the motor?s rotating direction. change in setting is refl ected at the clk rising edge i mmediately after the change in setting cw_ccw rotating direction l clockwise (ch2?s current is outputted with a phase lag of 90 in regard to ch1?s current) h counter clockwise(ch2?s current is outputted with a phase lead of 90 in regard to ch1?s current) enable/output enable terminal turn off forcibly all the output transistors (motor output is open). at enable=l, electrical angle or operating mode is maintained even if clk is inputted. if step modes are changed during enable=l, new step mode is carried out at enable=l to h enable motor output l open (electrical angle maintained) h active ps/power save terminal ps can make circuit standby state and make motor output open. in standby state, translator circuit is reset (initialized) and electrical angle is initialized. please be careful because there is a dela y of 40s(max.) before it is returned from standby state to normal state and the motor output becomes active ps state l standby state (reset) h active the electrical angle (initial electr ical angle) of each step mode immedi ately after reset is as follows step mode initial electrical angle full step 45 half step 45 1/8 step 45 1/16 step 45 protection circuits thermal shutdown (tsd) this ic has a built-in thermal shutdown circuit for thermal protection. when the ic?s chip temperature rises above 175c (typ.), the motor output becomes open. also, when the temperat ure returns to under 150c (typ.), it automatically returns to normal operation. however, even when tsd is in operation, if heat is continued to be added externally, heat overdrive can lead to destruction. over current protection (ocp) this ic has a built in over current pr otection circuit as a provision against destruction when the motor outputs are shorted each other or vcc-motor output or motor output-gnd is shorted. this circuit latches the motor output to open condition when the regulated threshold current flows for 4s (typ.). it re turns with power reactivation or a reset of the ps terminal. the over current protection circuit?s only ai m is to prevent the destruction of the ic from irregular situations such as motor output shorts, and is not meant to be used as protection or security for the set. t herefore, sets should not be designed to take into account this circuit?s functions. after ocp operating, if irregular situations cont inues and the return by power reactivation or a reset of the ps terminal is carried out repeat ly, then ocp operates repeatly and the ic may generate heat or otherwise deteriorate. when the l val ue of the wiring is great due to the wiring being long, after the over current has flowed and the output terminal voltage jumps up and the absolute maximum values may be exceeded and as a result, there is a possibility of destruction. also, when current which is over the output current rati ng and under the ocp detection current flows, the ic can heat up to ov er tjmax=150c and can deteriorate, so current which exceeds the output rating should not be applied. www.datasheet.co.kr datasheet pdf - http://www..net/
technical note 5/8 BD63843EFV, bd63847efv www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. under voltage lock out (uvlo) this ic has a built-in under voltage lock out function to preven t false operation such as ic output during power supply under voltage. when the applied voltage to the vcc terminal goes unde r 15v (typ.), the motor output is set to open. this switching voltage has a 1v (typ.) hysteres is to prevent false operation by noise etc. please be aware that this circuit does not operate during power save mode. also, the electrical angle is reset when the uvlo circuit operates during clk-in drive mode. over voltage lock out (ovlo) this ic has a built-in over voltage lock out function to protec t the ic output and the motor dur ing power supply over voltage. when the applied voltage to the vcc terminal goes over 32v (typ.), the motor output is set to open. this switching voltage has a 1v (typ.) hysteresis and a 4s (typ.) mask time to prevent false operation by noise etc. although this over voltage locked out circuit is built-in, there is a possibility of destruction if the absolute maximum value for power supply voltage is exceeded, therefore the absolute maximum value should not be exce eded. please be aware that this circuit does not operate during power save mode. ghost supply prevention (protects against malfunction when power supply is disconnected) if a signal (logic input, vref, mth) is input when there is no power supplied to this ic, there is a function which prevents the false operation by voltage supplied via the electrostatic des truction prevention diode from these input terminals to the vcc to this ic or to another ic?s power supply. therefore, there is no malfunction of the circuit even when voltage is supplied to these input terminals while there is no power supply. thermal derating curve htssop-b28 has exposed metal on the back, and it is possible to dissipate heat from a through hole in the back. also, the back of board as well as the surfaces has large areas of c opper foil heat dissipation patterns, greatly increasing power dissipation. the back metal is shorted with the back side of the ic chip, being a gnd potential, therefore there is a possibility for malfunction if it is shorted with any potential other than gnd, which should be avoided. also, it is recommended that the back metal is solder ed onto the gnd to short. please note that it has been assumed that this product will be used in the condition of this back metal perfo rmed heat dissipation treatment for increasing heat dissipation efficiency. fig.2 htssop-b28 thermal derating curve ambient temperature:ta[c] power dissipation pd[w] 1.0 100 125 0 4.70w 4 3.30w 3 1.85w 2 1.45w 1 2.0 3.0 4.0 5.0 measurement machine th156 kuwano electric measurement condition rohm board board size 70mm*70mm*1.6mm (with through holes on the board) the exposed metal of the backside is connected to the board with solder. board ? 1-layer board (copper foil on the back 0mm) board ? 2-layer board (copper foil on the back 15mm*15mm) board ? 2-layer board (copper foil on the back 70mm*70mm) board ? 4-layer board (copper foil on the back 70mm*70mm) board ? ja =86.2c w board ? ja =67.6c w board ? ja =37.9c w board ? ja =26.6c w 50 25 85 75 150 www.datasheet.co.kr datasheet pdf - http://www..net/
technical note 6/8 BD63843EFV, bd63847efv www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. usage notes (1) absolute maximum ratings an excess in the absolute maximum ratings, such as supply vo ltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify br eaking mode, such as a short circuit or an open circuit. if any over rated values will expect to exceed the absolute ma ximum ratings, consider adding circuit protection devices, such as fuses. (2) connecting the power supply connector backward connecting of the power supply in reverse polarity can damage ic. take precautions when connecting the power supply lines. an external direction diode can be added. (3) power supply lines as return of current regenerated by back emf of fet out put happens, take steps such as putting capacitor between power supply and gnd as an electric pathway for the regener ated current. be sure that there is no problem with each property such as emptied capacity at lo wer temperature regarding electrolytic capacitor to decide capacity value. if the connected power supply does not have suff icient current absorption capacity, rege nerative current will cause the voltage on the power supply line to rise, which combined with the product and its peripheral circuitry may exceed the absolute maximum ratings. it is recommended to implement a physical safety measure such as the insertion of a voltage clamp diode between the power supply and gnd pins. (4) gnd potential the potential of gnd pin must be minimu m potential in all operating conditions. (5) metal on the backside (define the side w here product markings are printed as front) the metal on the backside is shorted with the backside of ic ch ip therefore it should be connec ted to gnd. be aware that there is a possibility of malfunction or destruction if it is shorted wi th any potential other than gnd. (6) thermal design use a thermal design that allows for a suffic ient margin in light of the power dissipa tion (pd) in actual operating conditions. this ic exposes the metal on the backside of package. note t hat this part is assumed to use after providing heat dissipation treatment to improve heat dissipation efficiency. try to occupy as wide as possible with heat dissipation pattern not only on the board surface but also the backside. (7) inter-pin shorts and mounting errors when attaching to a printed circuit board, pay close attention to the direction of the ic and displacement. improper attachment may lead to destruction of the ic. there is also possibility of destruction from short circuits which can be caused by foreign matter entering between out puts or an output and the power supply or gnd. (8) operation in a strong electric field use caution when using the ic in the presence of a strong electr omagnetic field as doing so may cause the ic to malfunction. (9) aso when using the ic, set the output transistor so that it does not exceed absolute maximum ratings or aso. (10) thermal shutdown circuit the ic has a built-in thermal shutdown circuit (tsd circuit) . if the chip temperature bec omes tjmax=150c, and higher, coil output to the motor will be open. the tsd circuit is des igned only to shut the ic of f to prevent runaway thermal operation. it is not designed to protect or indemnify peri pheral equipment. do not use the tsd function to protect peripheral equipment. tsd on temperature [c] (typ.) hyst eresis temperature [c] (typ.) 175 25 (11) inspection of the application board during inspection of the application board, if a capacitor is connected to a pin with low impedance there is a possibility that it could cause stress to the ic, t herefore an electrical discharge should be performed after each process. also, as a measure again electrostatic discharge, it should be earthed during the assembly process and special care should be taken during transport or storage. furthermore, when connecti ng to the jig during the inspection process, the power supply should first be turned off and then removed before the inspection. www.datasheet.co.kr datasheet pdf - http://www..net/
technical note 7/8 BD63843EFV, bd63847efv www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. (12) input terminal of ic this ic is a monolithic ic, and between each element there is a p+ isolation for element partition and a p substrate. this p layer and each element?s n layer make up the p-n junction, and various parasitic elements are made up. for example, when the resistance and transistor are connected to the terminal as shown in figure 3, when gnd (terminal a) at the resistance and gnd (terminal b) at the transistor (npn), the p-n junction operates as a parasitic diode. also, when gnd (terminal b) at the transistor (npn) the parasitic npn transistor operates with the n la yers of other elements close to the aforementioned parasitic diode. because of the ic?s structure, the creation of parasitic elements is inevitable from the electrical potential relationship. the operation of parasitic elements causes interference in circ uit operation, and can lead to malfunction and destruction. therefore, be careful not to use it in a way which causes t he parasitic elements to operate, such as by applying voltage that is lower than the gnd (p s ubstrate) to the input terminal. fig. 3 pattern diagram of parasitic element (13) ground wiring pattern when using both large current and small signal gnd patterns , it is recommended to isolate the two ground patterns, placing a single ground point at the gr ound potential of applicatio n so that the pattern wiring resistance and voltage variations caused by large currents do not cause variations in the small signal ground voltage. be careful not to change the gnd wiring pattern of any external components, either. (14) test pin be sure to connect test pin to gnd. resistor transistor (npn) n n n p + p + p p substrate gnd pin a n n p + p + p p substrate gnd parasitic element pin b n gnd pin a p aras iti c element pin b other adjacent elements e b c gnd p aras iti c element parasitic element b c e www.datasheet.co.kr datasheet pdf - http://www..net/
technical note 8/8 BD63843EFV, bd63847efv www.rohm.com 2012.02 - rev. a ? 2012 rohm co., ltd. all rights reserved. ordering part number b d 6 3 8 4 3 ef v -e 2 ??` efv=htssop-b28 ??`?? e2: `???`? ? order quantity needs to be multiple of the minimum quantity. embossed carrier tape (with dry pack) tape quantity direction of feed the direction is the 1pin of product is at the upper left when you hold reel on the left hand and you pull out the tape on the right hand 2500pcs e2 () direction of feed reel 1pin (unit : mm) htssop-b28 0.08 m 0.08 s s 1.0 0.2 0.5 0.15 4 + 6 ? 4 0.17 +0.05 - 0.03 15 28 14 1 (2.9) 4.4 0.1 (5.5) (max 10.05 include burr) 0.625 6.4 0.2 9.7 0.1 1pin mark 1.0max 0.65 0.85 0.05 0.08 0.05 0.24 +0.05 - 0.04 www.datasheet.co.kr datasheet pdf - http://www..net/
r1120 a www.rohm.com ? 2012 rohm co., ltd. all rights reserved. notice rohm customer support system http://www.rohm.com/contact/ thank you for your accessing to rohm product informations. more detail product informations and catalogs are available, please contact us. notes no copying or reproduction of this document, in part or in whole, is permitted without the consent of rohm co.,ltd. the content specified herein is subject to change for improvement without notice. the content specified herein is for the purpose of introducing rohm's products (hereinafter "products"). if you wish to use any such product, please be sure to refer to the specifications, which can be obtained from rohm upon request. examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the products. the peripheral conditions must be taken into account when designing circuits for mass production. great care was taken in ensuring the accuracy of the information specified in this document. however, should you incur any damage arising from any inaccuracy or misprint of such information, rohm shall bear no responsibility for such damage. the technical information specified herein is intended only to show the typical functions of and examples of application circuits for the produc ts. rohm does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by rohm and other parties. rohm shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. the products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, commu- nication devices, electronic appliances and amusement devices). the products specified in this document are not designed to be radiation tolerant. while rohm always makes efforts to enhance the quality and reliability of its products, a product may fail or malfunction for a variety of reasons. please be sure to implement in your equipment using the products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any product, such as derating, redundancy, fire control and fail-safe designs. rohm shall bear no responsibility whatsoever for your use of any product outside of the prescribed scope or not in accordance with the instruction manual. the products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel- controller or other safety device). rohm shall bear no responsibility in any way for use of any of the products for the above special purposes. if a product is intended to be used for any such special purpose, please contact a rohm sales representative before purchasing. if you intend to export or ship overseas any product or technology specified herein that may be controlled under the foreign exchange and the foreign trade law, you will be required to obtain a license or permit under the law. www.datasheet.co.kr datasheet pdf - http://www..net/
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