BD63801EFV_12

Stepping Motor Driver Series Standard 36V Stepping Motor Drivers BD63801EFV No.12009EAT07 ●Description BD63801EFV is rated 24V system maximum input voltage / 0.8A maximum output current and employs a constant-current PWM control scheme for low power consumption. Serial (CLK-IN) drive mode allows for simple interfacing and operation, while allowing for full and half excitation modes. The single-power supply configuration allows for easy design and layout in the application. ●Feature 1) Power supply: one system drive (19V～28V) 2) Low ON resistance DMOS output 3) Serial (CLK-IN) drive mode 4) PWM constant current control (self oscillation) 5) Built-in spike noise cancel function (external noise filter is unnecessary) 6) FULL STEP applicable to HALF STEP 7) Normal / Reverse rotation switching function 8) Power save function* 9) Built-in logic input pull-down resistor 10) Power-on reset function 11) Thermal shutdown circuit (TSD) 12) Over current protection circuit (OCP) 13) Under voltage lock out circuit (UVLO) 14) Over voltage lock out circuit (OVLO) 15) Malfunction prevention at the time of no applied power supply (Ghost Supply Prevention) 16) Electrostatic discharge: 4kV (HBM specification) 17) Microminiature, ultra-slim and high heat-radiation (exposed metal type) HTSSOP package 18) Function pin compatible with constant current 2ch 36V Simple Stepping Motor Driver Series ●Application PPC, Laser beam printer, Scanner, Photo printer, FAX, Ink jet printer, Mini printer, Sewing machine, Toy, and Robot etc. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 1/8 2012.02 - Rev.A BD63801EFV ●Absolute maximum ratings(Ta=25℃) Item Supply voltage Power dissipation Input voltage for control pin RNF maximum voltage Maximum output current Operating temperature range Storage temperature range Junction temperature Symbol VCC1,2 Pd VIN VRNF IOUT Topr Tstg Tjmax BD63801EFV -0.2～+36.0 1 1.1※ ※2 4.0 -0.2～+5.5 0.5 0.8※3 -25～+85 -55～+150 +150 Technical Note Unit V W V V A/phase ℃ ℃ ℃ ※1 70mm×70mm×1.6mm glass epoxy board. Derating in done at 8.8mW/℃ for operating above Ta=25℃. ※2 4-layer recommended board. Derating in done at 32.0mW/℃ for operating above Ta=25℃. ※3 Do not, however exceed Pd, ASO and Tjmax=150℃. ●Operating conditions(Ta= -25～+85℃) Item Supply voltage Output current (DC) ※4 Do not however exceed Pd, ASO. Symbol VCC1,2 IOUT BD63801EFV 19～28 0.5※4 Unit V A/phase ●Electrical characteristics Applicable to all the series (Unless otherwise specified Ta=25℃, Vcc1,2=24V) Limit Item Symbol Min. Typ. Max. Whole Circuit current at standby ICCST 0.6 2.0 Circuit current ICC 2.7 7.0 Control input (CLK, FR, MODE, EN, PS) H level input voltage VINH 2.0 L level input voltage VINL 0.8 H level input current IINH 33 50 Output (OUT1A, OUT1B, OUT2A, OUT2B) Output ON resistance Output leak current Current control RNFX input current VREFX input current VREFX input voltage range Comparator offset Minimum on time RON ILEAK IRNFX IVREF VREF VCOFS TONMIN -40 -2.0 0 -20 0.3 2.8 -20 -0.1 0 0.7 3.6 10 0.4 20 1.2 Unit Condition mA mA V V μA PS=L PS=H, VREF=0.4V VIN=3.3V IOUT =0.3A Sum of upper and lower Ω μA μA μA V mV μs RNFX=0V VREFX=0V VREFX=0.4V R=39kΩ, C=1000pF www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 2/8 2012.02 - Rev.A BD63801EFV ●Terminal function ･Block diagram･Application circuit diagram Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Pin name PGND EN VREF2 CR2 NC TEST GND PS CR1 VREF1 MODE NC Ground terminal Output enable terminal Output current value setting terminal Connection terminal of CR for setting PWM frequency Non connection Terminal for testing (used by connecting with GND) Ground terminal Power save terminal Connection terminal of CR for setting PWM frequency Output current value setting terminal Motor excitation mode setting terminal Non connection Technical Note Function Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Pin name CLK PGND VCC1 OUT1A RNF1 OUT1B OUT2B RNF2 OUT2A VCC2 NC FR Function Clock input terminal (for advancing electrical angle) Ground terminal Power supply terminal H bridge output terminal Connection terminal of resistor for output current detection H bridge output terminal H bridge output terminal Connection terminal of resistor for output current detection H bridge output terminal Power supply terminal Non connection Motor rotating direction setting terminal CLK 13 Set the PWM frequency. Setting range is C:470pF～4700pF R:10kΩ～100kΩ FR 24 MODE 11 EN 2 Regulator Translator TSD RESET 8 PS Terminal for testing. Please connect to GND. 6 TEST OVLO trigger UVLO Resistor for current detection. Setting range is 0.2Ω～0.9Ω CR1 9 39kΩ 1000pF VREF1 10 ONE SHOT 15 VCC1 OUT1A OUT1B RNF1 LOGIC Predriver 16 18 17 Current Limit Comp. CR2 4 0.3Ω OCP 22 VCC2 Be sure to short VCC1 & VCC2 39kΩ 1000pF VREF2 3 ONE SHOT LOGIC Predriver 21 OUT2A 0.1uF 100uF 19 OUT2B 20 RNF2 Set the PWM frequency. Setting range is C:470pF～4700pF R:10kΩ～100kΩ PGND PGND GND 1 14 7 Current Limit Comp. 0.3Ω OCP Bypass capacitor. Setting range is 100uF～470uF(electrolytic) 0.01uF～0.1uF(multilayer ceramic etc.) Resistor for current detection. Setting range is 0.2Ω～0.9Ω Fig.1 Block diagram & Application circuit diagram www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 3/8 2012.02 - Rev.A BD63801EFV Technical Note ●Points to notice for terminal description ○CLK(pin13)／Clock 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. ○MODE(pin11)／Motor excitation mode setting terminal Set the motor excitation mode. MODE Excitation mode L H FULL STEP HALF STEP A ○FR(pin24)／Motor 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 90°in regard to CH1’s current) Counter Clockwise(CH2’s current is outputted with a phase lead of 90°in regard to CH1’s current) ○ENABLE(pin2)／Output 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=L→H) is different from the released occasion at the section of CLK=H and from the released occasion at the section of CLK＝L . ENABLE Motor output L H OPEN (electrical angle maintained) ACTIVE ○PS(pin8)／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 delay of 40μs(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 HALF STEP. Excitation mode Initial electrical angle FULL STEP HALFSTEP A 45° 0° ●Protection Circuits ○Thermal shutdown (TSD) This IC features an integrated thermal shutdown for protection against thermal destruction. When the IC’s chip temperature rises above 175°C (Typ.), the motor output is forced open. When the temperature returns to 150°C or less (Typ.), the IC automatically resumes normal operation. However, even if TSD has engaged, the IC may become damaged if heat continues to be absorbed from an external source. ○Over-current protection (OCP) This IC features an integrated over-current protection circuit to protect against destruction if the motor outputs are shorted to one another, if VCC is shorted to the motor output, or if the motor output is shorted to GND. The circuit latches the motor output open if current flows above the maximum threshold for 4 µS (Typ.), and is disengaged when the IC is power-cycled or if the PS terminal is reset. The OCP circuitry is designed only to protect the IC from irregular conditions (such as motor output shorts) and is not designed to be used as an active security device for the application. Therefore, applications should not be designed under the assumption that this circuitry will engage. After OCP has engaged, if irregular conditions continue after a power cycle or PS pin reset, OCP may engage repeatedly, causing the IC to generate heat or otherwise suffer damage. If the inductance of the IC’s input/output wiring is large (e.g., due to long trace length), overload current may flow into the wiring before OCP engages, causing a jump in voltage on the input/output pin that may exceed the IC’s absolute maximum rating and damage the IC. Additionally, if the IC conducts a current through the output that is larger than the specified output current rating but lower than the OCP threshold, the IC may heat up beyond its maximum rating (Tjmax = 150°C) and destroy itself. Therefore, ensure that the set output current does not exceeds the IC’s maximum output rating. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 4/8 2012.02 - Rev.A BD63801EFV Technical Note ○Under-voltage lockout (UVLO) This IC features an integrated under-voltage lockout function to prevent against output when powered by an insufficient supply voltage. If the supply voltage connected to the VCC terminal drops below 15 V (Typ.), the motor output is forced open. This switching voltage threshold has a hysteresis of 1 V (Typ.) to prevent malfunction due to noise on the input. This circuit does not function in power-save mode. Also, when driving the IC in serial (CLK-in) mode, the output angle is reinitialized to the default angle upon release of the UVLO circuitry. ○Over-voltage lockout (OVLO) This IC features an integrated over-voltage lockout function to prevent against output when powered by a supply voltage exceeding the rated input voltage range. If the supply voltage connected to the VCC terminal reaches 32 V (Typ.), the motor output is forced open. This switching voltage threshold has a hysteresis of 1 V (Typ.) and a noise-masking period of 4 µs (Typ.) to prevent malfunction due to noise on the input. Although the IC features this integrated protection device, it may still be destroyed if the input voltage exceeds the IC’s absolute maximum ratings. This circuit does not operate in power-save mode. ○Ghost supply prevention This IC features integrated ghost supply protection circuitry, which prevents the IC from being powered by a logic input when the power supply is disconnected or grounded. This circuitry prevents current from flowing through the integrated ESD protection diodes (located between logic input pins and the VCC pin), ensuring that the IC itself or any other peripherals connected to the VCC pin cannot be powered by an input signal on any logic terminals. Therefore, the circuit will not malfunction if a logic signal is input to the IC while the power supply is disconnected or grounded. ● Power dissipation ○ HTSSOP-B24 package The HTSSOP-B24 package features a heat-radiating metal slag mounted on the backside of the IC. Ensure that the PCB design incorporates large areas of copper to facilitate heat dissipation as much as possible. As the heat slag is shorted with the substrate of the IC die, ensure that the slag is connected to GND. Connecting the slag to a potential other than GND will cause the chip to malfunction. Also ensure that the backside of the chip is completely and firmly soldered onto the PCB. The ratings specified in this sheet assume the IC has been properly mounted and soldered, and that the PCB has been adequately designed to facilitate heat dissipation. Measurement machine：TH156（Kuwano Electric） Measurement condition：ROHM board 3 Board size：70*70*1.6mm (With through holes on the board) The exposed metal of the backside is connected to the board with solder. 2 Board①：1-layer board(Copper foil on the back 0mm ) 2 Board②：2-layer board(Copper foil on the back 15*15mm ) 2 Board③：2-layer board(Copper foil on the back 70*70mm ) 2 Board④：4-layer board(Copper foil on the back 70*70mm ) Board①：θja =113.6℃/W Board②：θja =73.5℃/W Board③：θja =44.6℃/W Board④：θja =31.3℃/W 4.0 4.0W 4 3.0 Power Dissipation : Pd[W] 2.8W 3 2.0 1.7W 1.1W 2 1 1.0 0 100 125 Fig.2 HTSSOP-B24 Derating curve www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 5/8 2012.02 - Rev.A BD63801EFV Technical Note ●Operation Notes (1) Absolute maximum ratings Use of the IC in excess of absolute maximum ratings (such as the input voltage or operating temperature range) may result in damage to the IC. Assumptions should not be made regarding the state of the IC (e.g., short mode or open mode) when such damage is suffered. If operational values are expected to exceed the maximum ratings for the device, consider adding protective circuitry (such as fuses) to eliminate the risk of damaging the IC. (2) Power supply polarity Connecting the power supply with a reverse polarity can damage IC. Take precautions when connecting the power supply lines. An external diode can be connected to the input for extra protection. (3) Power supply lines PCB design should allow for low-impedance GND and supply lines. To minimize noise on these lines, the GND section and supply lines of the digital and analog blocks should be routed separately on the PCB. Furthermore, for all power IC supply terminals, a capacitor should be connected between the power supply and GND terminal. If using electrolytic capacitors, note that their capacitance values may be reduced at lower temperatures. (4) GND potential The potential of the GND pin must be the minimum potential in the system in all operating conditions. pins are at a voltage below the GND at any time, regardless of transient characteristics. Ensure that no (5) Backside heat slag The metal heat slag integrated on the backside of the IC is connected internally with the backside of the IC die. Therefore, it should always be connected to GND. Connecting to any other potential may cause malfunction or destruction of the IC. (6) Thermal design Use a thermal design that allows for a sufficient margin for the package’s rated power dissipation (Pd) under actual operating conditions. Keep in mind that the packaging of this IC series has been designed with an exposed heat slag on the backside of the package, and that this heat slag should be soldered completely to as broad a GND pattern as possible (on both the base fin of the slag as well as the entire backside) to improve heat dissipation. (7) Inter-pin shorts and mounting errors Use caution when orienting and positioning the IC for mounting on printed circuit boards. Improper mounting may result in damage to the IC. Shorts between output pins or between output pins and the power supply or GND pins (caused by poor soldering or foreign objects) may result in damage to the IC. (8) Operation in strong electromagnetic fields Using this product in strong electromagnetic fields may cause IC malfunction. Caution should be exercised in applications where strong electromagnetic fields may be present. (9) ASO – Area of safe operation When using the IC, ensure that operating conditions do not exceed absolute maximum ratings or ASO of the output transistors. (10) Thermal shutdown circuit The IC incorporates a built-in thermal shutdown circuit, which is designed to force the motor output open if the IC’s internal temperature exceeds Tjmax = 150°C. It is not designed to protect the IC from damage or guarantee its operation. ICs should not be used after this function has activated, or in applications where the operation of this circuit is assumed. TSD on temperature [°C] (Typ.) 175 Hysteresis Temperature [°C] (Typ.) 25 (11) Testing on application boards When testing the IC on an application board, connecting a capacitor directly to a low-impedance pin may subject the IC to stress. Always discharge capacitors completely after each process or step. The IC’s power supply should always be turned off completely before connecting or removing it from a jig or fixture during the evaluation process. To prevent damage from static discharge, ground the IC during assembly and use similar precautions during transport and storage. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 6/8 2012.02 - Rev.A BD63801EFV Technical Note (12) Input terminal of IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. PN junctions are formed at the intersection of these P layers with the N layers of other elements, creating parasitic diodes and/or transistors. For example (refer to the figure below):   When GND > Pin A and GND > Pin B, the PN junction operates as a parasitic diode When GND > Pin B, the PN junction operates as a parasitic transistor Parasitic diodes occur inevitably in the structure of the IC, and the operation of these parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. Accordingly, conditions that cause these diodes to operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should be avoided. Resistor Pin A Pin A P+ N P+ N P+ Transistor (NPN) Pin B C B E N B N E Pin B C N P N Parasitic element P P+ P substrate Parasitic element GND P substrate Parasitic element GND GND GND Parasitic element Other adjacent elements Fig.3 Example of Monolithic IC Structure (13) Ground wiring patterns When using both small-signal and large-current GND traces, the two ground traces should be routed separately but connected to a single ground potential within the application in order to avoid variations in the small-signal ground caused by large currents. Also ensure that the GND traces of external components do not cause variations on GND voltage. The power supply and ground lines must be as short and thick as possible to reduce line impedance. (14) TEST Terminal Connect the TEST pin to GND during operation. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 7/8 2012.02 - Rev.A BD63801EFV ●Ordering part number Technical Note B 形名 D 6 3 8 0 1 E F V - E2 包装、フォーミング仕様 E2: リール状エンボステーピング パッケージ EFV=HTSSOP-B24 HTSSOP-B24 7.8±0.1 (MAX 8.15 include BURR) (5.0) 24 13 +6° 4° −4° 0.53±0.15 Tape Quantity 1.0±0.2 Embossed carrier tape (with dry pack) 2000pcs E2 The direction is the 1pin of product is at the upper left when you hold 7.6±0.2 5.6±0.1 Direction of feed (3.4) ( reel on the left hand and you pull out the tape on the right hand ) 1 12 0.325 0.85±0.05 1PIN MARK S +0.05 0.17 -0.03 1.0MAX 0.08±0.05 0.65 +0.05 0.24 -0.04 0.08 S 0.08 M 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. 8/8 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. 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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 © 2012 ROHM Co., Ltd. All rights reserved. R1120A