PWM current control motor driver ICs MTD2029J MTD Series DMOS DUAL FULL BRIDGE PWM MOTOR DRIVER ICs ■Features 1) 2） 3) 4) 5) 6） 7) 8) 9） 10) 11） 12） Built-in dual full-bridge For a 2-phase bipolar stepper motor or two DC motors Constant current control function (fixed OFF time PWM current control) 2-bit digital current selection （It can respond to W1-2 phase excitation） Selectable current decay mode （Slow/Fast/Mix Decay Mode） Stand-by function Noise cancellation function (An external filter is unnecessary) Phase Synchronous function Over heating shutdown function with thermal hysteresis Under Voltage Lock Out function Output current 1.5A, Output voltage 50V HSOP40 Surface mount type package with heat dissipation tab (HSOP40) ■Block Diagram 2 37 38 3 OUT1 OUT2 36 Vcc TSD 1 VmmA 39 40 RsA 21 22 RsB 18 23 24 19 VmmB OUT3 OUT4 20 6 cpA UVLO 5 cpB 4 cpC Charge Pump 35 26 BRAKE A PHASE A 9 I0 A 2-bit digital current select 10 13 GATE CIRCUIT 8 GATE CIRCUIT BRAKE B PHASE B 12 2-bit digital current select I0 B 11 I1 A 34 I1 B Blank Blank 1/5 1/5 27 Vref B VrefA Current Sensor - ONE SHOT + DECAY A CR A SYNC 32 + + + 33 - ONE SHOT 14 Shindengen Electric Mfg.Co.Ltd STB 30 PG TAB LG 31 28 DECAY B CR B SRM 15 Current Sensor 29 W1002 PWM current control motor driver ICs MTD2029Ｊ ■Pin Assignment <TOP VIEW> 1 2 3 4 5 6 7 8 9 10 40 39 38 37 36 35 34 33 32 31 11 12 13 14 15 16 17 18 19 20 30 29 28 27 26 25 24 23 22 21 GND I1 B I0 B PHA B SYNC SRM NC NC OUT3 OUT3 Vmm B Rs A Rs A OUT1 OUT1 Vcc BRA A Vref A DEC A CR A LG GND Vmm A OUT2 OUT2 cpC cpB cpA NC PHA A I0 A I1 A STB CR B DEC B Vref B BRA B NC OUT4 OUT4 Rs B Rs B [ OUT,Rs are prepared each two terminals. Be sure to use, short-circuiting ■Absolute Maximum Ratings Ta=25oC unless otherwise specified Parameter Logic supply voltage Logic input Output Temperature Input voltage Output voltage Output current Output current (Peak) ∗1 Flywheel diode voltage Flywheel diode current Allowable power dissipation ∗2 Storage temperature range Maximum junction temperature Symbol Vcc Ratings 0~7 Units V VPHA/I0/I1/DEC/BRA/ SYNC/SRM/STB 0~Vcc V VOUT Ic Ip ∗1 VF IF Pt ∗2 Tstg Tj(max) 50 1.5 2.5 50 1.5 2.9 -40~150 150 V A A V A W oC oC ∗1 Condition : tw < 20µs ∗2 2inches grass epoxy board (FR4) and a heat dissipation Cu pattern area of 250mm2 Shindengen Electric Mfg.Co.Ltd W1002 ] PWM current control motor driver ICs MTD2029Ｊ ■Electrical Characteristics ( Ta=25oC, Vcc=5.0V unless otherwise specified ) Parameter Symbol Condition Logic supply current（2 circuit ON） Icc(ON) VI0="L",VI1="L" Logic supply current (2 circuit OFF) Icc(OFF) VI0="H",VI1="H" Load supply current (2 circuit ON) IMM(ON) VMM=24V,VI0="L",VI1="L" Logic supply current (STB) Icc(STB) VSTB="L" Load supply current (STB) IMM(STB) VMM=24V,VSTB="L" Logic "H" input voltage VINH Operating Logic "L" input voltage VINL Operating PHASE "H" input current IPHAH VPHA=5.0V PHASE "L" input current IPHAL VPHA=0V I0 "H" input current II0H VI0=5.0V I0 "L" input current II0L VI0=0V I1 "H" input current II1H VI1=5.0V I1 "L" input current II1L VI1=0V DECAY "H" input current IDECH VDEC=5.0V DECAY "L" input current IDECL VDEC=0V BRAKE "H" input current IBRAH VBRA=5.0V BRAKE "L" input current IBRAL VBRA=0V SRM "H" input current ISRMH VSRM=5.0V SRM "L" input current ISRML VSRM=0V SYNC "H" input current ISYNCH VSYNC=5.0V SYNC "L" input current ISYNCL VSYNC=0V STB "H" input current ISTBH VSTB=5.0V STB "L" input current ISTBL VSTB=0V Reference voltage range Vref Vref=Vcc-2.0V Vref "H" input current IrefH Vref=3.0V Vref "L" input current IrefL Vref=0V Comparator Threshold (100%) Vs1 VI0="L",VI1="L" Comparator Threshold (70%) Vs2 VI0="H",VI1="L" Comparator Threshold (40%) Vs3 VI0="L",VI1="H" Upper MOSFET ON resistance RonH IOUT=-1.0A Lower MOSFET ON resistance RonL IOUT=1.0A Upper MOSFET leak current IleakH Vmm=50V,VOUT=0V Lower MOSFET leak current IleakL VOUT=50V,VTAB=0V Upper diode foward drop VFH IOUT=-1.0A Lower diode foward drop VFL IOUT=1.0A One shot off time Toff Ct=470pF,Rt=56kΩ Blanking time tb Ct=470pF,Rt=56kΩ Vmm=24.0V,Cp1=0.47µF,Cp2=0.022µF Charge pump setting time Tchg Under voltage lock out threshold VUVLO Operating Thermal shutdown temperature TTSD Operating MIN 2.0 GND -42.0 -42.0 42.0 -42.0 95 64.4 36 - TYP 12.0 11.0 9.0 5.0 -1.0 -1.0 -1.0 -5.0 -62.5 -62.5 62.5 -1.0 -62.5 -5.0 100 70 40 0.5 0.5 1.3 1.3 26.3 2.03 4.0 165 MAX 17.0 16.0 12.0 8.0 100 Vcc 0.8 10.0 -10.0 10.0 -10.0 10.0 -10.0 10.0 -15.0 10.0 -125.0 10.0 -125.0 125 -10.0 10.0 -125.0 3.0 10.0 -15.0 105 75.6 44 0.7 0.7 50.0 50.0 1.5 1.5 2.0 - Unit mA mA mA mA µA V V µA µA µA µA µA µA µA µA µA µA µA µA µA µA µA µA V µA mA % % % Ω Ω µA µA V V µs µs ms V oC ■Recommended operation conditions Parameter Symbol Recommendation Unit Junction temperature range Tj -25∼120 ℃ Logic supply Vcc 4.75∼5.50 V Load supply Vmm 15∼45 V ■Thermal resistance Symbol Rating Unit θja *1 43 ℃/W ∗1 2inches grass epoxy board (FR4) and a heat dissipation Cu pattern area of 250mm2 Shindengen Electric Mfg.Co.Ltd W1002 PWM current control motor driver ICs MTD2029Ｊ ■Truth Table BRAKE A or B I0 A or B I1 A or B PHASE A or B OUT 1 or 4 OUT 2 or 3 Output current ratio (%) H L L L L H 100 H H L L L H 70 H L H L L H 40 H H H r r r 0 H L L H H L 100 H H L H H L 70 H L H H H L 40 L r r r L L - (Output OFF) r : don't care STB Mode L Stand-by H or Open (∗1) ∗1 [ SYNC L or Open (∗2) Active Synchronous ∗2 pull-down resistance built-in DECAY DECAY Mode SRM VDEC < VCR FAST L VDEC > VCR SLOW Shindengen Electric Mfg.Co.Ltd Disabled H pull-up resistance built-in 1.0V < VCR < 3.0V All Fast Decay Mode VDEC < 0.6V All Slow Decay Mode VDEC > 3.4V Mode (∗3) H or Open (∗4) ] Mode Disabled Synchronous Rectification ∗3 SRM:Synchronous Rectification Mode ∗4 pull-up resistance built-in W1002 PWM current control motor driver ICs MTD2029Ｊ The example of a 2-phase stepper motor drive circuit Load Supply Vcc=5V Rs 2 37 38 3 OUT1 OUT2 36 Vcc Vcc=5V Cp2 Rs 39 1 40 VmmA RsA 21 22 RsB 18 23 19 24 VmmB OUT3 OUT4 20 6 cpA 5 cpB UVLO Charge Pump 35 26 BRAKE A BRAKE B PHASE A 9 I0 A 2-bit digital current select 10 13 GATE CIRCUIT 8 GATE CIRCUIT CPU or GATE ARRAY 4 cpC PHASE B 12 2-bit digital current select I0 B 11 I1 A Vref 34 I1 B Blank Blank 1/5 1/5 27 Vref 28 Vdec Vref B VrefA Current Sensor Vdec Vcc=5 V CPU or GATE ARRAY TSD Cp1 - ONE SHOT + DECAY A SYNC CR A 32 14 CtA Current Sensor + + + 33 - ONE SHOT RtA STB PG 30 TAB LG 31 DECAY B CR B SRM 15 29 RtB CPU or GATE ARRAY CtB Vcc=5V The example of a two DC motor drive circuit Rs 37 2 38 3 OUT1 OUT2 36 Vcc TSD Cp1 Load Supply Vcc=5V 1 VmmA Cp2 Rs 39 40 RsA 21 22 18 23 24 19 VmmB OUT3 OUT4 20 RsB 6 cpA UVLO 5 cpB 4 cpC Charge Pump 35 26 PHASE A 9 I0 A 2-bit digital current select 10 13 GATE CIRCUIT 8 PHASE B 12 2-bit digital current select I0 B 11 I1 A Vref 34 I1 B Blank Blank 1/5 1/5 27 Vref 28 Vdec Vref B VrefA Current Sensor Vdec CPU or GATE ARRAY BRAKE B GATE CIRCUIT CPU or GATE ARRAY BRAKE A - ONE SHOT + DECAY A SYNC CR A 32 CtA + + + 33 - ONE SHOT 14 RtA Shindengen Electric Mfg.Co.Ltd STB 30 CPU or GATE ARRAY PG TAB DECAY B CR B SRM LG 31 Current Sensor 15 29 RtB CtB W1002 PWM current control motor driver ICs MTD2029Ｊ ●Constant chopping current level Ichop = Vref 5 ×Rs ●One shot off time Toff = Ct×Rt ●Pulse Blanking Time tb = Ct×Rt× ln 1− 0.5×10-3 Rt 3 − 0.5×10-3Rt ●Recommended component valuesl Symbol Rs Rt Ct Cp1 Cp2 Recommended value 0.39 56k 470p 0.47µ 0.022µ Shindengen Electric Mfg.Co.Ltd Unit Ω Ω F F F W1002 PWM current control motor driver ICs MTD2029Ｊ ■Outline Dimension ( Unit : mm ) Shindengen Electric Mfg.Co.Ltd W1002 PWM current control motor driver ICs ! ! MTD2029Ｊ Although we are constantly making every effort to improve the quality and reliability of our products, there nevertheless remains a certain probability that the semiconductor products may occasionally fail or malfunction. Please take careful precautions against product failures or malfunctions to avoid any injuries, fire accidents or social loss by implementing safety designs such as redundancy designs, designs for fi re spread prevention, and designs for preventing malfunctions. Our semiconductor products listed in this document are not designed or manufactured to be used in devices or systems requiring extremely high levels of quality and reliability, or the failure or malfunction of which may directly threaten human lives or cause injury. In the cases where the products are to be used in devices or systems for special applications or devices or systems for specialized applications shown below, always make sure to consult us in advance. 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However, our company takes no responsibility for any injury or damage incurred when using the IC products as described in this manual. Neither do we take any responsibility for issues arising from infringement of patent or other rights caused by using this manual. ● The provision of this manual does not guarantee the right to use any third party's patent or other rights, or grant permission to use the patent or other rights of our company. ● No part of this manual may be reproduced or copied without the specific written consent of Shindengen Electric Mfg. Co., Ltd. Shindengen Electric Mfg.Co.Ltd W1002