Stepping Motor Driver series High Performance, High Reliability 36V Stepping Motor Driver Series BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM No.12009EAT04 Description BD6387EFV, BD6385EFV, BD6383EFV, BD6389FM are the high-grade type that provides the highest function and highest reliance in the ROHM stepping motor driver series. This series has the perfect various protection circuits and reduces IC's generation of heat by adopting low-ON resistance DMOS and high heat-radiation power package. As for its basic function, it is a low power consumption bipolar PWM constant current-drive driver with power supply's rated voltage of 36V and rated output current of 1.0A2.2A. For the input interface, the CLK-IN drive mode and the parallel IN drive mode are compatible with each other, so please choose an input mode according to needs of application. There are excitation modes of FULL STEP & HALF STEP (2 kinds), QUARTER STEP mode, and for current decay mode, the ratio of FAST DECAY & SLOW DECAY can be freely set, so the optimum control conditions for every motor can be realized. In addition, being able to drive with one system of power supply makes contribution to the set design's getting easy. Feature 1) Power supply: one system drive (rated voltage of 36V) 2) Rated output current: 1.0A, 1.5A, 2.0A, 2.2A 3) Low ON resistance DMOS output 4) CLK-IN drive mode (built-in translator circuit) 5) Parallel IN drive mode 6) Stepping motorDC motor(x2) drives are selectable 7) PWM constant current control (self oscillation) 8) Built-in spike noise cancel function (external noise filter is unnecessary) 9) FULL STEP & HALF STEP (two kinds), applicable to QUARTER STEP 10) Applicable to the STEP drive 11) Current decay mode switching function (linearly variable FAST/SLOW DECAY ratio) 12) Normal rotation & reverse rotation switching function 13) Power save function 14) Built-in logic input pull-down resistor 15) Power-on reset function 16) Thermal shutdown circuit (TSD) 17) Over current protection circuit (OCP) 18) Under voltage lock out circuit (UVLO) 19) Over voltage lock out circuit (OVLO) 20) Malfunction prevention at the time of no applied power supply (Ghost Supply Prevention) 21) Electrostatic discharge: 6kV (HBM specification) 22) Adjacent pins short protection 23) Inverted mounting protection 24) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP package (BD6387EFV/BD6385EFV/BD6383EFV) 25) FIN heat-radiating type HSOP package (BD6389FM) 26) Pin-compatible line-up (BD6387EFV/BD6385EFV/BD6383EFV or BD6389FM) Application PPC, multi-function printer, laser beam printer, ink jet printer, monitoring camera, WEB camera, sewing machine, photo printer, FAX, scanner, mini printer, toy, and robot etc. www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 1/8 2012.02 - Rev.A Technical Note BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM Absolute maximum ratings(Ta=25) Item Supply voltage Symbol VCC0,1,2 Power dissipation Pd Input voltage for control pin RNF maximum voltage VIN VRNF IOUT Maximum output current Operating temperature range Storage temperature range Junction temperature 1 2 3 4 5 BD6387EFV BD6385EFV BD6383EFV -0.2+36.0 1 1.6 4.72 BD6389FM 2.83 5.24 -0.2+5.5 0.5 5 1.55 2.0 Topr Tstg Tjmax 1.05 2.25 -25+75 -55+150 150 Unit V W W V V A/phas e 70mmx70mmx1.6mm glass epoxy board. Derating in done at 12.8mW/ for operating above Ta=25. 4-layer recommended board. Derating in done at 37.6mW/ for operating above Ta=25. 70mmx70mmx1.6mm glass epoxy board. Derating in done at 22.4mW/ for operating above Ta=25. 4-layer recommended board. Derating in done at 41.6mW/ for operating above Ta=25. Do not, however exceed Pd, ASO and Tjmax=150. Operating conditions(Ta= -25+75) Item Supply voltage Symbol VCC0,1,2 BD6387EFV IOUT 1.76 Output current(DC) BD6385EFV BD6383EFV 1028 1.26 0.76 BD6389FM 1.96 Unit V A/phas e 6 Do not however exceed Pd, ASO. Electrical characteristics Applicable to all the series (Unless otherwise specified Ta=25, Vcc0,1,2=24V) Limit Item Symbol Min. Typ. Max. Whole Circuit current at standby ICCST 1.0 3.0 Circuit current ICC 4.5 10 Control input (SELECT, CW_CCW, CLK, PS, MODE0, MODE1, ENABLE) H level input voltage VINH 2.0 L level input voltage VINL 0.8 H level input current IINH 35 50 85 L level input current IINL -10 0 Output (OUT1A, OUT1B, OUT2A, OUT2B) Unit mA mA PS=L PS=H, VREFX=2V V V A A VIN=5V VIN=0V Output ON resistance (BD6387EFV) RON - 0.8 1.04 Output ON resistance (BD6385EFV) RON - 1.0 1.3 Output ON resistance (BD6383EFV) RON - 1.5 1.95 Output ON resistance (BD6389FM) RON - 0.7 0.91 ILEAK - - 10 A IRNFS IRNF IVREF VREF IMTH VMTH VCTH tONMIN -2.0 -40 -2.0 0 -2.0 0 0.36 0.3 -0.2 -20 -0.1 -0.1 0.4 0.7 2.0 3.5 0.44 1.2 A A A V A V V s Output leak current Current control RNFXS input current RNFX input current VREFX input current VREFX input voltage range MTHX input current MTHX input voltage range Comparator threshold Minimum on time www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 2/8 Condition IOUT =1.5A, Sum of upper and lower IOUT =1.0A, Sum of upper and lower IOUT =0.5A, Sum of upper and lower IOUT =1.7A, Sum of upper and lower RNFXS =0V RNFX=0V VREFX=0V MTHX=0V VREFX=2V R=39k,C=1000pF 2012.02 - Rev.A Technical Note BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM Terminal function 1) BD6387EFV / BD6385EFV / BD6383EFV Pin Pin name Function No. 1 NC 2 RNF1 3 RNF1S 4 NC 5 OUT1B 6 NC 7 OUT1A 8 NC 9 VCC1 10 NC 11 CR1 12 NC Pin No. Pin name Function Non connection Connection terminal of resistor for output current detection 21 VCC0 22 NC Non connection Input terminal of current limit comparator 23 GND Ground terminal Non connection 24 MODE0 Motor excitation mode setting terminal H bridge output terminal 25 MODE1 Motor excitation mode setting terminal Non connection 26 ENABLE Output enable terminal H bridge output terminal 27 VREF2 Output current value setting terminal Non connection 28 MTH2 Current decay mode setting terminal Power supply terminal 29 NC Non connection 30 CR2 Connection terminal of CR for setting PWM frequency 31 NC Non connection 32 VCC2 Power supply terminal Non connection Connection terminal of CR for setting PWM frequency Non connection Power supply terminal 13 MTH1 Current decay mode setting terminal 33 NC 14 VREF1 Output current value setting terminal 34 OUT2A Input mode select terminal 35 NC Motor rotating direction setting terminal 36 OUT2B Non connection Clock input terminal for advancing the electrical angle. 37 NC 38 RNF2S Power save terminal 39 RNF2 Connection terminal of resistor for output current detection Terminal for testing (used by connecting with GND) 40 GND Ground terminal 15 SELECT 16 CW_CCW 17 NC 18 CLK 19 PS 20 TEST 2) BD6389FM Pin Pin name No. 1 NC 2 CR1 3 4 Function Pin No. Non connection H bridge output terminal Non connection H bridge output terminal Non connection Input terminal of current limit comparator Pin name Function Non connection Connection terminal of CR for setting PWM frequency 19 VCC2 20 NC Non connection MTH1 Current decay mode setting terminal 21 NC Non connection VREF1 Output current value setting terminal 22 OUT2A Input mode select terminal 23 NC Motor rotating direction setting terminal Clock input terminal for advancing the electrical angle. 24 OUT2B 25 NC Power save terminal Terminal for testing (used by connecting with GND) Fin terminal (used by connecting with GND) 26 RNF2S 27 RNF2 FIN FIN Ground terminal 28 RNF1 RNF1S Power supply terminal H bridge output terminal 5 SELECT 6 CW_CCW 7 CLK 8 PS 9 TEST FIN FIN 10 GND 11 MODE0 Motor excitation mode setting terminal 29 12 MODE1 Motor excitation mode setting terminal 30 NC 13 ENABLE Output enable terminal 31 OUT1B 14 VREF2 Output current value setting terminal 32 NC 15 MTH2 33 OUT1A 16 CR2 Current decay mode setting terminal Connection terminal of CR for setting PWM frequency 34 NC 35 VCC1 Power supply terminal 36 VCC0 Power supply terminal 17 NC Non connection 18 NC Non connection www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 3/8 Non connection H bridge output terminal Non connection Input terminal of current limit comparator Connection terminal of resistor for output current detection Fin terminal (used by connecting with GND) Connection terminal of resistor for output current detection Input terminal of current limit comparator Non connection H bridge output terminal Non connection H bridge output terminal Non connection 2012.02 - Rev.A Technical Note BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM Block diagramApplication circuit diagramInput output equivalent circuit diagram Set the PWM frequency. Setting range is C:470pF4700pF R:10k100k. Buffer VREF1 Resistor for current. detecting Setting range is 0.10.3. Current Limit Comp. DAC VCC1 OUT1A CR1 1000pF 39k Predriver Logic CR Timer RNF1 OCP MTH1 CLK MODE0 MODE1 CW_CCW ENABLE SELECT Set the PWM frequency. Setting range is C:470pF4700pF R:10k100k. OUT1B Translator TSD VREF2 Be sure to short VCC0, VCC1 & Reg VCC0 OVLO GND 100uF UVLO RESET Buffer 0.2 RNF1S Bypass capacitor. Setting range is 100uF470uF(electrolytic) 0.01uF0.1uF(multilayer ceramic etc.) PS Current Limit Comp. DAC 0.1uF VCC2 OUT2A CR2 1000pF 39k CR Timer Logic Predriver OUT2B RNF2 MTH2 OCP TEST 0.2 RNF2S Resistor for current. detecting. Setting range is 0.10.3. Terminal for testing. Pleaseconnect to GND. Fig.1 Block diagram & Application circuit diagram of BD6387EFV/BD6385EFV/BD6383EFV/BD6389FM Points to notice for terminal description CLKClock input terminal for advancing the electrical angle CLK is reflected at rising edge. The Electrical angle advances 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,MODE1Motor excitation mode setting terminal Set the motor excitation mode. MODE0 MODE1 Excitation mode L H L H L L H H FULL STEP HALF STEP A HALF STEP B QUARTER STEP CW_CCW TerminalMotor rotating direction setting terminal Set the motor's rotating direction. Change in setting is reflected at the CLK's rising edge immediately after the change in setting CW_CCW Rotating direction L H Clockwise (CH2's current is outputted with a phase lag of 90in regard to CH1's current) Counter Clockwise(CH2's current is outputted with a phase lead of 90in regard to CH1's current) ENABLE TerminalOutput enable terminal Turn off forcibly all the output transistors (motor output is open). At the time of ENABLE=L, electrical angle or operating mode is maintained even if CLK is inputted. Please be careful because the electrical angle at the time of ENABLE being released (ENABLE=LH) is different from the released occasion at the section of CLK=H and from the released occasion at the section of CLKL. ENABLE Motor output L H OPEN (electrical angle maintained) ACTIVE www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 4/8 2012.02 - Rev.A BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM Technical Note PSPower 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 delay 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 electrical angle) of each excitation mode immediately after RESET is as follows. Please be careful because the initial state at the time of FULL STEP is different from those of other excitation modes. Excitation mode Initial electrical angle FULL STEP HALFSTEP A HALFSTEP B QUARTER STEP 45 0 0 0 SELECT TerminalInput mode switching terminal This is the terminal to set the input mode. SELECT Input mode L H CLK-IN drive Parallel IN drive Power dissipation HTSSOP-B40 Package (BD6387EFV/BD6385EFV/BD6383EFV) HTSSOP-B40 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 copper 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 soldered 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 performed heat dissipation treatment for increasing heat dissipation efficiency. 5.0 4.7W 4 Measurement machineTH156Kuwano Electric Measurement conditionROHM board 3 Board size70*70*1.6mm (With through holes on the board) The exposed metal of the backside is connected to the board with solder. 2 Board1-layer board(Copper foil on the back 0mm ) 2 Board2-layer board(Copper foil on the back 15*15mm ) 2 Board2-layer board(Copper foil on the back 70*70mm ) 2 Board4-layer board(Copper foil on the back 70*70mm ) 4.0 Power DissipationPd[W] 3.6W 3 3.0 2.0 1.0 1.95W 2 1.6W 1 Boardja=78.1/W Boardja=64.1/W Boardja=34.7/W Boardja=26.6/W 0 100 125 Ambient Temperature:Ta[] Fig.2 HTSSOP-B40 Derating Curve www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 5/8 2012.02 - Rev.A BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM Technical Note HSOP-M36 Package (BD6389FM/BD6388FM) HSOP-M36 has a heat-dissipating FIN terminal on the IC side, but it is possible to greatly increase power dissipation by taking a large heat dissipation pattern, such as with copper foil, on the back as well as the surface of the board. Also, this terminal is a GND potential, therefore there is a possibility for malfunction or destruction if it is shorted with any potential other than GND. 4 5.2W Measurement machineTH156Kuwano Electric Measurement conditionROHM board 3 Board size70*70*1.6mm (With through holes on the board) 5.0 4.1W 3 3.0W 2 2.8W 1 2 Board1-layer board(Copper foil on the back 0mm ) 2 Board2-layer board(Copper foil on the back 15*15mm ) 2 Board2-layer board(Copper foil on the back 70*70mm ) 2 Board4-layer board(Copper foil on the back 70*70mm ) Power DissipationPd[W] 4.0 3.0 Boardja=44.6/W Boardja=41.6/W Boardja=30.5/W Boardja=24.0/W 2.0 1.0 0 100 125 Fig.3 HSOP-M36 Derating Curve Ambient Temperature:Ta[] Usage Notes (1) Absolute maximum ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open circuit. If any over rated values will expect to exceed the absolute maximum 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 Design PCB layout pattern to provide low impedance GND and supply lines. To obtain a low noise ground and supply line, separate the ground section and supply lines of the digital and analog blocks. Furthermore, for all power supply terminals to ICs, connect a capacitor between the power supply and the GND terminal. When applying electrolytic capacitors in the circuit, not that capacitance characteristic values are reduced at low temperatures. (4) GND Potential The potential of GND pin must be minimum potential in all operating conditions. (5) Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) in actual operating conditions. Users should be aware that BD6387EFV, BD6385EFV and BD6383EFV have been designed to expose their frames at the back of the package, and should be used with suitable heat dissipation treatment in this area to improve dissipation. As large a dissipation pattern should be taken as possible, not only on the front of the baseboard but also on the back surface. BD6389FM and BD6388FM are both equipped with FIN heat dissipation terminals, but dissipation efficiency can be improved by applying heat dissipation treatment in this area. It is important to consider actual usage conditions and to take as large a dissipation pattern as possible. (6) 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 outputs or an output and the power supply or GND. www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 6/8 2012.02 - Rev.A Technical Note BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM (7) Operation in a strong electric field Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to malfunction. (8) ASO When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO. (9) Thermal shutdown circuit The IC has a built-in thermal shutdown circuit (TSD circuit). If the chip temperature becomes Tjmax=150, and higher, coil output to the motor will be open. The TSD circuit is designed only to shut the IC off to prevent runaway thermal operation. It is not designed to protect or indemnify peripheral equipment. Do not use the TSD function to protect peripheral equipment. TSD on temperature [] (Typ.) 175 Hysteresis Temperature [] 25 (Typ.) (10) 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, therefore 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 connecting to the jig during the inspection process, the power supply should first be turned off and then removed before the inspection. (11) 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 4, 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 layers 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 circuit operation, and can lead to malfunction and destruction. Therefore, be careful not to use it in a way which causes the parasitic elements to operate, such as by applying voltage that is lower than the GND (P substrate) to the input terminal. Resistor Transistor (NPN) Pin A Pin B C Pin A N P + N P P+ N Pin B B E N Parasitic element P+ N GND P+ P B N E P substrate P substrate Parasitic element C Parasitic element GND GND GND Parasitic element Other adjacent elements Fig. 4 Pattern Diagram of Parasitic Element (12) Ground Wiring Patterns When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns, placing a single ground point at the application's reference point 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 potential of any external components, either. (13) TEST Terminal Be sure to connect TEST pin to GND. www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 7/8 2012.02 - Rev.A Technical Note BD6383EFV, BD6385EFV, BD6387EFV, BD6389FM Ordering part number B D 6 3 8 E 3 F V EFV : HTSSOP-B40 FM : HSOP-M36 - E2 E2: HTSSOP-B40 <Tape and Reel information> 13.60.1 (MAX 13.95 include BURR) 4 +6 -4 (8.4) 1 Embossed carrier tape (with dry pack) Quantity 2000pcs Direction of feed E2 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 ) 20 1PIN MARK +0.05 0.17 -0.03 1.0Max. 0.625 1.2 0.2 (3.2) 0.5 0.15 21 5.40.1 7.80.2 40 Tape S 0.850.05 0.080.05 +0.05 0.24 -0.04 0.65 0.08 M 0.08 S 1pin Reel (Unit : mm) Direction of feed Order quantity needs to be multiple of the minimum quantity. HSOP-M36 <Tape and Reel information> 18.5 0.1 (MAX 18.75 include BURR) +6 4 -4 2.77 0.1 0.10.05 2.20.05 9 10 1PIN MARK 0.8 +0.05 0.37 -0.04 Embossed carrier tape (with dry pack) Quantity 1500pcs 19 Direction of feed 1.20.2 27 0.50.15 1 0.85 2.4MAX 28 7.50.1 9.90.2 36 Tape E2 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 ) 18 +0.055 0.27 -0.045 0.08 S 0.08 M 1pin Reel (Unit : mm) www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. 8/8 Direction of feed Order quantity needs to be multiple of the minimum quantity. 2012.02 - Rev.A Notice 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 Products. 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, communication 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, fuelcontroller 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. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com (c) 2012 ROHM Co., Ltd. All rights reserved. R1120A