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the information in this document is subject to change without notice. before using this document, please confirm that this is the latest version. not all products and/or types are available in every country. please check with an nec electronics sales representative for availability and additional information. mos integrated circuit pd168110 microstep driver for driving camera lens document no. s15840ej1v0ds00 (1st edition) date published march 2003 n cp(k) printed in japan data sheet ? description the pd168110 is a monolithic 2-channel h bridge driver that consists of a cmos controller and a mos output stage. it can reduce the current consumption and the voltage loss at the output stage compared with a conventional driver using bipolar transistors, thanks to employment of a mos process. this product employs a p-channel mosfet on the high side of the output stage, eliminating a charge pump. as a result, the circuit current consumption can be substantially reduced during operation. this product is ideal for driving the motor of a digital still camera as it can switch over between two-phase excitation driving and microstep driving, using a stepper motor. features o two h bridge circuits employing power mosfet o current feedback 64-step microstep driving and two-phase excitation driving selectable o low on-resistance: 2 ? max. o 3 v power supply minimum operating power supply voltage v dd = 2.7 v o under voltage lockout circuit shuts down internal circuitry at v dd = 1.7 v typ. o 24-pin tssop ordering information part number package pd168110ma-6a5 24-pin plastic tssop (5.72 mm (225))
data sheet s15840ej1v0ds 2 pd168110 pin functions package: 24-pin tssop 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 resetb cw v dd fil2 fil1 fb1 out1b v m1 out1a pgnd1 mobsel stop mode clk lgnd c osc mob pgnd2 out2b v m2 out2a fb2 ps oe pin no. pin name pin function 1 mode microstep/2-phase excitation switch pin 2 clk pulse input pin 3 lgnd control block gnd pin 4c osc pin connecting capacitor for output oscillator 5 mob phase detection output pin 6 pgnd2 output block gnd pin 7 out2b channel 2 output b 8v m2 motor power pin 9 out2a channel 2 output a 10 fb2 channel 2 current detection resistor connecting pin 11 ps power save mode pin 12 oe output enable pin 13 stop stop mode pin 14 mobsel mob output select pin 15 pgnd1 output block gnd pin 16 out1a channel 1 output a 17 v m1 motor power pin 18 out1b channel 1 output b 19 fb1 channel 1 current detection resistor connecting pin 20 fil1 channel 1 filter capacitor connecting pin 21 fil2 channel 2 filter capacitor connecting pin 22 v dd control block power pin 23 cw revolution direction setting pin 24 resetb reset input pin
data sheet u15840ej1v0ds 3 pd168110 block diagram v m h bridge ch1 h bridge ch2 v m mob fb2 evr1 mode mobsel reset clk v dd v m1 v m2 c osc lgnd fb1 decoder cw ps stop evr2 current set internal block pulse generater current sense1 current sense2 pgnd out1a out1b fil1 oe fil2 out2a out2b pgnd osc filter filter ++ + + truth table reset clk cw oe ps stop mode mobsel operation mode h lhllhl microstep cw mode mob: 1 pulse/cycle h hhl lhl microstep ccw mode mob: 1 pulse/cycle h lhllhh microstep cw mode mob: 4 pulses/cycle h hhl lhh microstep ccw mode mob: 4 pulses/cycle h l h l l l x 2-phase cw mode h h h l l l x 2-phase ccw mode hxxlxxxxoutput hi-z hxxhlhhx stop mode after mob = l (clk must be input until mob = l) hxxhhhhx ps mode after mob = l (clk must be input until mob = l) h x x h h l h x setting prohibited l x x x x x x x reset mode h: high level, l: low level, x: high level or low level
data sheet s15840ej1v0ds 4 pd168110 command input timing chart in microstep mode 1 reset clk cw oe ps stop chopping pulse pulse out (internal) mob reset status cw mode output when mobsel = h power save mode stop mode stopped ccw mode reset status output hi-z 2 3 4 5 6 7 8 9 10 1112 1314 15 16 12 345678910111213 13 14 14 15 15 16 1718 17 16 17 18 19 20 21 22 23242526272829 30
data sheet u15840ej1v0ds 5 pd168110 standard connection diagram microstep/2-phase excitation driving v m ++ + + h bridge ch1 h bridge ch2 v m mob v dd 10 k ? 2 k ? 1000 pf 1000 pf 2 k ? fb2 evr1 mode mobsel reset clk v dd v m1 3.3 v 5.0 v 330 pf v m2 c osc lgnd fb1 decoder cpu cw ps stop evr2 current set pulse generater current sense1 current sense2 pgnd out1a out1b fil1 oe fil2 out2a out2b pgnd osc 1000 pf from cpu 1000 pf m internal block filter filter only 2-phase excitation driving v m h bridge ch1 h bridge ch2 v m mob + + + + v dd v dd 10 k ? fb2 evr1 mode mobsel reset clk v dd v m1 3.3 v 5.0 v v m2 c osc lgnd fb1 decoder cpu cw ps stop evr2 current set pulse generater current sense1 current sense2 pgnd v dd out1a out1b fil1 oe from cpu fil2 out2a out2b pgnd osc m internal block filter filter
data sheet s15840ej1v0ds 6 pd168110 output timing chart ? ? ? ? microstep output mode 0 5 10 15 20 25 30 35 40 45 50 55 60 65 0 5 101520253035404550556065 0 5 10 15 20 25 30 35 40 45 50 55 60 65 99.5 99.5 95.7 95.7 100 98.1 92.4 92.4 98.1 100 88.2 88.2 83.1 83.1 77.3 77.3 70.7 70.7 63.4 63.4 55.6 55.6 47.1 47.1 38.3 38.3 29.0 29.0 19.5 19.5 9.8 9.8 0 99.5 99.5 95.7 95.7 100 98.1 92.4 92.4 98.1 100 88.2 88.2 83.1 83.1 77.3 77.3 70.7 70.7 63.4 63.4 55.6 55.6 47.1 47.1 38.3 38.3 29.0 29.0 19.5 19.5 9.8 9.8 0 0510 position ch 1 current ch 2 current mob output (when mobsel = l ) mob output (when mobsel = h ) clk input 15 20 25 30 35 40 45 50 55 60 65 0 5 10 15 20 25 30 35 40 45 50 55 60 65 the horizontal axis indicates the number of steps. this figure shows an example in the cw mode. the pulse advances in synchronization with the rising edge of clk. the current flows into ch 1 and ch 2 in the positive direction when it flows from out1a to out1b, and in the negative direction when it flows from out1b to out1a (the values shown above are ideal values and do not indicate the actual values).
data sheet u15840ej1v0ds 7 pd168110 output timing chart ? 2-phase excitation output mode 012345678 100 100 012345678 012345678 012345678 100 100 ch 1 current ch 2 current mob output clk input the horizontal axis indicates the number of steps. this figure shows an example in the cw mode. the current flows into ch 1 and ch 2 in the positive direction when it flows from out1a to out1b, and in the negative direction when it flows from out1b to out1a.
data sheet s15840ej1v0ds 8 pd168110 relationship between revolution angle, phase current, and vector amount (64 microsteps) phase a phase current phase b phase current vector amount step revolution angle min. typ. max. min. typ. max. typ. 0 0 ? 03.8 ? 100 ? 100 1 5.625 2.5 9.8 17.0 94.5 100 104.5 100.48 2 11.250 12.4 19.5 26.5 93.2 98.1 103.0 100 3 16.875 22.1 29.0 36.1 90.7 95.7 100.7 100.02 4 22.500 31.3 38.3 45.3 87.4 92.4 97.4 100.02 5 28.125 40.1 47.1 54.1 83.2 88.2 93.2 99.99 6 33.750 48.6 55.6 62.6 78.1 83.1 88.1 99.98 7 39.375 58.4 63.4 68.4 72.3 77.3 82.3 99.97 8 45 65.7 70.7 75.7 65.7 70.7 75.7 99.98 9 50.625 72.3 77.3 82.3 58.4 63.4 68.4 99.97 10 56.250 78.1 83.1 88.1 48.6 55.6 62.6 99.98 11 61.875 83.2 88.2 93.4 40.1 47.1 54.1 99.99 12 67.500 87.4 92.4 97.4 31.3 38.3 45.3 100.02 13 73.125 90.7 95.7 100.7 22.1 29.0 36.1 100.02 14 78.750 93.2 98.1 103.0 12.4 19.5 26.5 100 15 84.375 94.5 100 104.5 2.5 9.8 17.0 100.48 16 90 ? 100 ?? 0 3.8 100 the above values are ideal values and are not guaranteed values.
data sheet u15840ej1v0ds 9 pd168110 function description 2-phase excitation driving mode by allowing a current of 100% to flow into output ch1 and ch2 at the same time, a motor can be driven with the larger torque. the two-phase excitation driving mode and microstep driving mode are switched by the mode pin. in the two- phase excitation driving mode, the chopping pulse circuit does not operate. microstep driving of stepper motor to position a stepper motor with high accuracy, the pd168110 has a function to hold constant the current flowing through the h bridge by a vector value and to stop one cycle in 64 steps. to realize the microstep driving mode, the driver internally realizes the following functions. ? detecting the current flowing into each channel as a voltage value by a sense resistor ? synthesizing the dummy sine wave of the half-wave generated by the internal d/a and pwm oscillation wave for chopping operation ? the driver stage performs pwm driving based on the result of comparing the detected voltage value and synthesized waves. the internal dummy sine wave is of 64 steps per cycle, so that the stepper motor can be driven in 64 steps. the microstep driving mode and two-phase excitation driving mode are switched by an external pin. a m + concept of microstep driving operation mob output the mob output pin outputs l if the current of ch1 or ch2 reaches 100% in the microstep output mode, or if the current of ch 1 reaches +100%. in the two-phase excitation output mode, the mob pin outputs l when the current of ch1 and ch2 reaches +100%. the excitation position of the stepper motor can be checked by monitoring the mob output. the mob output also indicates the stop position information in the stop mode to be explained below. the mob output goes into a hi-z state (output h level if pulled up) when oe = l . stop mode if the stop mode is set by the stop pin, the pulse is automatically output until mob = l when clk is input. if mob = l in the stop mode, the pulse is not output even when clk is input, and the output holds the excitation status. to advance the pulse, release the stop mode and restore the normal mode.
data sheet s15840ej1v0ds 10 pd168110 reset function when reset = l , initialization is executed and the output goes into a hi-z state. when reset = h , excitation is started with the current of ch1 at +100% and the current of ch2 at 0% (one-phase excitation position). to perform two-phase excitation driving, excitation is started with the currents of ch1 and ch2 at +100% after the mode has been set. be sure to execute a reset operation after power application. mob outputs l until the pulse is output when reset goes l . output enable (oe) pin the pulse output can be forcibly stopped from an external source by using the oe pin. when oe = l , the output is forcibly made to go into a hi-z state. standby function the pd168110 can enter the standby mode when the pulse is not output and when ps = h and stop = h . in the standby mode, as many internal circuits as possible are stopped so that the self current consumption can be reduced. in the standby mode, the current consumption is 1 a max. when external clk input is stopped. while clk is being input, the current consumption is reduced to 300 a max. by the current flowing into the input buffer. the standby mode is released when ps = l and stop = l . under voltage lockout circuit (uvlo) this function is used to forcibly stop the operation of the ic to prevent malfunction of the circuits if v dd of the ic drops during operation. note that if the v dd voltage abruptly drops in the order of s, this function may not operate. v m pin current shutdown circuit a circuit that prevents a current from flowing into the vm pin when v dd = 0 v is provided. therefore, the current flowing into the vm pin is cut off when v dd = 0 v. a current of up to 3 a flows into the v m pin when v dd is applied so that the voltages on the v dd and v m pins can be monitored.
data sheet u15840ej1v0ds 11 pd168110 operation description ? setting output current the peak value of the output current (when current of ch 1 or ch 2 is 100%) is determined by the resistor r fb that is connected to fb1 and fb2. this ic has an internal reference power supply v ref (500 mv typ.) for comparing current, and drives the stepper motor with the current value calculated by r fb and v ref as the peak output current value. peak output current value i max (a) ? v ref (v) r fb ( ? ) x 1000 ? pulse output the motor is driven by inputting a pulse to the clk pin. the motor advances by one pulse at the rising edge of the clk signal. when mode = h , the motor is driven in the 64-microstep driving mode, and the driving current of each step is determined based on the internal motor excitation position information and revolution direction. when mode = l , the two-phase excitation mode is selected, and the current direction (100% drive) of ch 1 and ch 2 are switched each time a pulse has been input. ? setting motor revolution direction the revolution direction of the motor is set by cw. in the cw mode (cw = l ), the current of ch2 is output, 90 degrees in phase behind the current of ch1. in the ccw mode (cw = h ), the current of ch2 is output, 90 degrees in phase ahead of the current of ch1. cw pin operation mode l cw mode (forward revolution) h ccw mode (reverse revolution) ? setting stop mode (valid only in microstep driving mode) when stop = h , the motor advances to the position of mob output = l , and the output status is held. the excitation status is not changed even when a pulse is input to clk while mob = l when stop = h . the pulse can be advanced when stop = l . stop operation mode l normal mode h stop mode caution if stop = ?l? before the stop mode is set (until mob = ?l?), the operation is performed in the same manner as in the normal mode.
data sheet s15840ej1v0ds 12 pd168110 ? ? ? ? power save mode (valid only in microstep driving mode) when ps = h and stop = h , the motor advances to the position of mob output = l and then the output goes to a hi-z state. the internal circuitry is stopped as much as possible and the standby mode is set. the power save mode is released when ps = l and stop = l . stop operation mode l normal mode h power save mode (only when stop = h ) caution inputting ps = ?h? and stop = ?l? is prohibited. ? setting output enable when oe = h , the motor is driven (output excitation status). be sure to set oe to h to drive the motor. stop operation mode l output hi-z h enable mode ? selecting two-phase excitation/microstep driving mode the mode pin can be used to select the two-phase excitation or microstep driving mode. when mode = h , the microstep driving mode is selected. when mode = l , the two-phase excitation mode (both ch 1 and ch 2 are driven at +100% or 100%) is selected. the pd168110 is initialized immediately after a reset operation, so excitation is started from the position at which the output current of ch 1 is 100% and the output current of ch 2 is 0% in the microstep driving mode, and from the position at which the output currents of both ch 1 and ch 2 are +100% in the two-phase excitation driving mode. if the mode is changed from the microstep to the two-phase, the position of the microstep mode is retained until clk is input. when the first clk is input, pulse output is started, the operation skips to the two-phase position of the next quadrant, and driving is started. mode operation mode l 2-phase excitation h microstep driving concept of switching operation mode from microstep to 2-phase excitation microstep stop position (example 1) microstep stop position (example 2) 2-phase excitation stop position skips to next quadrant (3) (2) (1)
data sheet u15840ej1v0ds 13 pd168110 ? selecting mob output (in microstep driving mode only) the output function of mob can be selected by mobsel. when mobsel = l , mob is output at the position where the current of ch1 is +100% and the current of ch2 is 0%. when mobsel = h , mob is output at the position where the current of ch1 or ch2 is 100%. mobsel mob output l current of ch1 is +100% and current of ch2 is 0% (1 pulse/ cycle). h current of ch1 or ch2 is 100% (4 pulses/ cycle). 0 5 10 15 20 25 30 35 40 45 50 55 60 65 0 5 10 15 20 25 30 35 40 45 50 55 60 65 99.5 99.5 95.7 95.7 100 98.1 92.4 92.4 98.1 100 88.2 88.2 83.1 83.1 77.3 77.3 70.7 70.7 63.4 63.4 55.6 55.6 47.1 47.1 38.3 38.3 29.0 29.0 19.5 19.5 9.8 9.8 0 99.5 99.5 95.7 95.7 100 98.1 92.4 92.4 98.1 100 88.2 88.2 83.1 83.1 77.3 77.3 70.7 70.7 63.4 63.4 55.6 55.6 47.1 47.1 38.3 38.3 29.0 29.0 19.5 19.5 9.8 9.8 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 0 5 10 15 20 25 30 35 40 45 50 55 60 65 reset position ch 1 current ch 2 current mob output mobsel = l mob output mobsel = h
data sheet s15840ej1v0ds 14 pd168110 absolute maximum ratings (t a = 25 c: glass epoxy board of 100 mm 100 mm 1 mm with c opper foil of 15%) parameter symbol conditions rating unit v dd control block ? 0.5 to +6.0 power supply voltage v m motor block ? 0.5 to +6.0 v input voltage v in ? 0.5 to v dd +0.5 v output pin voltage v out 6.2 v dc output current i d(dc) dc 0.4 a/ch instantaneous output current i d(pulse) pw < 10 ms, duty 20% 0.7 a/ch power consumption p t 0.7 w peak junction temperature t ch(max) 150 c storage temperature t stg ? 55 to +150 c recommended operating conditions (t a = 25 c: glass epoxy board of 100 mm 100 mm 1 mm with copper foil of 15%) parameter symbol conditions min. typ. max. unit v dd control block 2.7 3.6 v power supply voltage v m motor block 2.7 5.5 v input voltage v in 0v dd v dc output current i d(dc) dc ? 0.35 +0.35 a/ch instantaneous output current i d(pulse) pw < 10 ms, duty 20% ? 0.6 +0.6 a/ch mob pin output sink current i mob open-drain output 5 ma operating temperature range t a ? 10 75 c
data sheet u15840ej1v0ds 15 pd168110 electrical characteristics (unless otherwise specified, v dd = v m = 3 v, t a = 25 c) parameter symbol conditions min. typ. max. unit v dd pin current after reset i dd(stb) external clk stopped 1.0 a i dd(stb2) external clk stopped 30 a v dd pin current in standby mode i dd(stb3) external clk is input 300 a v dd pin current during operation i dd(act) 3.0 ma vm pin current i m(off) v m = 5.5 v per v m pin, after reset and in standby mode 3.0 a high-level input current i ih v in = v dd 1.0 a low-level input current i il v in = 0 v ? 1.0 a high-level input voltage v ih 2.7 v v dd 3.6 v 0.7 x v dd v low-level input voltage v il 2.7 v v dd 3.6 v 0.3 x v dd v input hysteresis voltage v hys 0.3 v h bridge on-resistance r on i m = 0.35 a, sum of upper and lower stages, fb1 = fb2 = 0 v 2.0 ? output turn-on time t on 0.02 0.5 s output turn-off time t off r m = 20 ? oe pin output sw time 0.02 0.5 s internal reference voltage v ref 450 500 550 mv output detection ratio i m = 0.1 a, with 2.5 k ? sense resistor connected 950 1050 1150 cautions 1. the undervoltage lockout detection circuit (uvlo) operates at 1.7 v typ. whereupon the output goes into a hi-z state. internal data such as the excitation position information is reset. the uvlo circuit does not operate after reset. 2. a shutdown circuit that prevents a current from flowing into the v m pin when v dd = 0 v is provided.
data sheet s15840ej1v0ds 16 pd168110 package drawing s 24-pin plastic tssop (5.72 mm (225)) note each lead centerline is located within 0.10 mm of its true position (t.p.) at maximum material condition. item millimeters a a' c d 6.65 0.10 6.5 0.1 0.1 0.05 f 0.5 (t.p.) g b 0.575 e 0.22 0.05 1.2 max. h 1.0 0.05 i 6.4 0.1 j 4.4 0.1 k 0.17 0.025 l 0.5 m 0.10 n 0.08 r 0.25 1.0 0.1 s 0.6 0.15 p24ma-50-6a5 p3 + 5 ? 3 24 13 1 12 m s n k f g l r s e p j dm c a b a' h i detail of lead end
data sheet u15840ej1v0ds 17 pd168110 recommended soldering conditions the pd168110 should be soldered and mounted under the following recommended conditions. for soldering methods and conditions other than those recommended below, contact an nec electronics sales representative. for technical information, see the following website. semiconductor device mount manual (http://www.necel.com/pkg/en/mount/index.html) recommended soldering conditions for surface mounting type pd168110ma-6a5 24pin tssop soldering method soldering conditions recommended condition symbol infrared reflow package peak temperature: 260 c, time: 60 seconds max. (at 220c or higher), count: three times or less, exposure limit: none, flux: rosin flux with low chlorine (0.2 wt% or below) recommended ir60-00-3 caution do not use different soldering methods together (except for partial heating).
data sheet s15840ej1v0ds 18 pd168110 [memo]
data sheet u15840ej1v0ds 19 pd168110 notes for cmos devices 1 precaution against esd for semiconductors note: strong electric field, when exposed to a mos device, can cause destruction of the gate oxide and ultimately degrade the device operation. steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it once, when it has occurred. environmental control must be adequate. when it is dry, humidifier should be used. it is recommended to avoid using insulators that easily build static electricity. semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. all test and measurement tools including work bench and floor should be grounded. the operator should be grounded using wrist strap. semiconductor devices must not be touched with bare hands. similar precautions need to be taken for pw boards with semiconductor devices on it. 2 handling of unused input pins for cmos note: no connection for cmos device inputs can be cause of malfunction. if no connection is provided to the input pins, it is possible that an internal input level may be generated due to noise, etc., hence causing malfunction. cmos devices behave differently than bipolar or nmos devices. input levels of cmos devices must be fixed high or low by using a pull-up or pull-down circuitry. each unused pin should be connected to v dd or gnd with a resistor, if it is considered to have a possibility of being an output pin. all handling related to the unused pins must be judged device by device and related specifications governing the devices. 3 status before initialization of mos devices note: power-on does not necessarily define initial status of mos device. production process of mos does not define the initial operation status of the device. immediately after the power source is turned on, the devices with reset function have not yet been initialized. hence, power-on does not guarantee out-pin levels, i/o settings or contents of registers. device is not initialized until the reset signal is received. reset operation must be executed immediately after power-on for devices having reset function.
pd168110 the information in this document is current as of february, 2003. the information is subject to change without notice. for actual design-in, refer to the latest publications of nec electronics data sheets or data books, etc., for the most up-to-date specifications of nec electronics products. not all products and/or types are available in every country. please check with an nec electronics sales representative for availability and additional information. no part of this document may be copied or reproduced in any form or by any means without the prior written consent of nec electronics. nec electronics assumes no responsibility for any errors that may appear in this document. nec electronics does not assume any liability for infringement of patents, copyrights or other intellectual property rights of third parties by or arising from the use of nec electronics products listed in this document or any other liability arising from the use of such products. no license, express, implied or otherwise, is granted under any patents, copyrights or other intellectual pr operty rights of nec electronics or others. descriptions of circuits, software and other related information in this document are provided for illustrative purposes in semiconductor product operation and application examples. the incorporation of these circuits, software and information in the design of a customer's equipment shall be done under the full responsibility of the customer. nec electronics assumes no responsibility for any losses incurred by customers or third pa rties arising from the use of these circuits, software and information. while nec electronics endeavors to enhance the quality, reliability and safety of nec electronics products, customers agree and acknowledge that the possibility of defects thereof cannot be eliminated entirely. to minimize risks of damage to property or injury (including death) to persons arising from defects in nec electronics products, customers must incorporate sufficient safety measures in their design, such as redundancy, fire-containment and anti-failure features. nec electronics products are classified into the following three quality grades: "standard", "special" and "specific". the "specific" quality grade applies only to nec electronics products developed based on a customer- designated "quality assurance program" for a specific application. the recommended applications of an nec electronics product depend on its quality grade, as indicated below. customers must check the quality grade of each nec electronics product before using it in a pa rticular application. "standard": computers, office equipment, communications equipment, test and measurement equipment, audio and visual equipment, home electronic appliances, machine tools, personal electronic equipment and industrial robots. "special": tr ansportation equipment (automobiles, trains, ships, etc.), traffic control systems, anti-disaster systems, anti-crime systems, safety equipment and medical equipment (not specifically designed for life support). "specific": aircraft, aerospace equipment, submersible repeaters, nuclear reactor control systems, life support systems and medical equipment for life support, etc. the quality grade of nec electronics products is "standard" unless otherwise expressly specified in nec electronics data sheets or data books, etc. if cust omers wish to use nec electronics products in applications not intended by nec electronics, they must contact an nec electronics sales representative in advance to determine nec electronics' willingness to support a given application. (note) (1) "nec electronics" as used in this statement means nec electronics corporation and also includes its majority-owned subsidiaries. (2) "nec electronics products" means any product developed or manufactured by or for nec electronics (as defined above). ? ? ? ? ? ? m8e 02. 11-1

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