BA6247FP-Y_11

Reversible Motor Drivers for Brush Motors 1.0A or More Reversible Motor Drivers (2 Motors) BA6247FP-Y, BA6238A No.11008EBT04 ●Description The reversible motor driver for output 1.0A or more for two motors drives a brush motor and incorporates one and a half circuits of reversible motor driver. In addition, since the output section can control voltage applied to motors by output high voltage setting pin, the torque at the time of driving motors can be varied. ●Features 1) Built-in one and a half circuits of a reversible motor driver 2) Minimal external components 3) Output voltage can be optionally set by reference voltage setting pin 4) Built-in thermal shutdown circuit ●Applications Audio-visual equipment; PC peripherals; Car audios; Car navigation systems; OA equipments ●Absolute maximum ratings (Ta=25℃, All voltages are with respect to ground) Ratings Parameter Symbol BA6247FP-Y BA6238A Supply voltage Output current Control input pins Operating temperature Storage temperature Power dissipation Junction temperature *1 *2 *3 *4 Unit V A V ℃ ℃ W ℃ VCC1, VCC2 IOMAX VIN TOPR TSTG Pd Tjmax 20 1*1 -0.2 ~ 6.0 -25 ~ 75 -55 ~ 150 1.45*4 150 20 1.6*1 -0.3 ~ 5.0 -25 ~ 75 -55 ~ 125 2.0*2 / 0.95*3 125 Do not, exceed Pd or ASO (Pulse at 1/50 duty: 50ms). HSIP10 package. Derated at 20mW/℃ above 25℃. SIP10 package. Derated at 9.5mW/℃ above 25℃. HSOP25 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 11.6mW/℃ above 25℃. ●Operating conditions (Ta=25℃) Parameter Supply voltage Supply voltage VREF voltage Symbol VCC1, VCC2 VR Ratings BA6247FP-Y 8 ~ 18 8 ~ 18 0 ~ 18 BA6238A 8 ~ 18 8 ~ 18 0 ~ 18 Unit V V V www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/11 2011.05 - Rev.B BA6247FP-Y,BA6238A Technical Note ●Electrical characteristics (BA6247FP-Y, unless otherwise specified, Ta=25℃ and VCC1=VCC2=12V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current Input threshold voltage H Input threshold voltage L Output voltage H Output voltage L Output leak current Output offset voltage VR bias current ICC VIH VIL VOH VOL IOL VOFS I8 3.5 10 -0.5 0.5 10 10.5 0.9 0 0.8 20 1.0 1.5 1 0.5 1.6 mA V V V V mA V mA IO=0.5A, VR=OPEN IO=0.5A IN1, IN2, IN3=L, VCC2 current VR=6V, IO=0.5A, VOH-VR VR=6V, IO=0.5A IN1, IN2, IN3=L ●Electrical characteristics (BA6238A, unless otherwise specified, Ta=25℃ and VCC1=VCC2=12V) Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply current Input threshold voltage H Input threshold voltage L Output voltage H Output voltage L Output leak current Output offset voltage VR bias current ICC VIH VIL VOH VOL IOL VOFS I8 4.0 10.0 -0.5 0.2 12 10.5 0.8 0 0.6 24 1.0 1.5 1 0.5 1.5 mA V V V V mA V mA IO=0.5A, VR=OPEN IO=0.5A, VR=OPEN IN1, IN2, IN3=L, RL=∞, VCC2 current VR=6V, IO=0.5A, VOH-VR VR=6V, IO=0.5A IN1, IN2, IN3=L, RL=∞ www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/11 2011.05 - Rev.B BA6247FP-Y,BA6238A ●Electrical characteristic curves (Reference data) 16 14 Supply Current: Icc [mA] 12 10 8 6 4 8 10 12 14 16 Supply Voltage: Vcc [V] 18 -25℃ 25℃ 75℃ Supply Current: Icc [mA] 18 16 14 12 10 8 6 8 10 12 14 16 Supply Voltage: Vcc [V] 18 75℃ 25℃ -25℃ Technical Note Fig.1 Supply current (BA6247FP-Y) 8.5 75℃ 25℃ -20℃ 8.0 12 Fig.2 Supply current (BA6238A) 75℃ 25℃ -25℃ Output High Voltage: VOH [V] Output High Voltage: VOH [V] 11 10 7.5 9 7.0 0 0.2 0.4 0.6 0.8 Output Current: Iout [A] 1 8 0 0.4 0.8 1.2 Output Current: Iout [A] 1.6 Fig.3 Output high voltage (BA6247FP-Y) 1.5 Fig.4 Output high voltage (BA6238A) 1.6 Output Low Voltage: VOL [V] Output Low Voltage: VOL [V] 1.2 1.2 0.9 0.8 0.6 -25℃ 25℃ 75℃ 0.3 0.4 0.0 0 0.2 0.4 0.6 0.8 Output Current: Iout [A] 1 0.0 0 0.4 0.8 1.2 Output Current: Iout [A] -25℃ 25℃ 75℃ 1.6 Fig.5 Output low voltage (BA6247FP-Y) 3 ii) Mounted on ROHM standard PCB ( 70mm x 70mm x 1.6mm FR4 glass -epoxy board) Fig.6 Output low voltage (BA6238A) 3 i) Without heat sink i) 2.0W 2 Pd [W] 1 i)0.85W 0 0 25 50 75 100 125 AMBIENT TEMPERATURE [°C] 150 0 25 50 75 100 125 AMBIENT TEMPERATURE [°C] 150 ii)1.45W i) Package only 2 Pd [W] 1 0 Fig.7 Thermal derating curve (BA6247FP-Y, HSOP25) Fig.8 Thermal derating curve (BA6238A, HSIP10) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 3/11 2011.05 - Rev.B BA6247FP-Y,BA6238A ●Block diagram and pin configuration BA6247FP-Y 16 TSD 9 VCC2 VCC1 C1 IN1 IN2 IN3 5 R2 6 8 CTRL 14 VR R3 R1 Technical Note GND FIN 7 19 20 GND OUT2 22 M C2 OUT1 18 M C3 OUT3 1 C4 C5 Fig.9 BA6247FP-Y Table 1 BA6247FP-Y Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 FIN Name OUT3 NC NC NC IN1 IN2 GND IN3 VCC1 NC NC NC NC VR NC VCC2 NC OUT1 GND GND NC OUT2 NC NC NC GND NC NC NC Control input Control input GND Control input Power supply (small signal) NC NC NC NC Reference voltage setting pin NC Power supply (driver stage) NC Driver output GND GND NC Driver output NC NC NC GND OUT3 NC NC NC IN1 IN2 GND GND IN3 VCC1 NC NC NC NC NC NC NC OUT2 NC GND GND GND OUT1 NC VCC2 NC VR Function Driver output Fig.10 BA6247FP-Y (HSOP25) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 4/11 2011.05 - Rev.B BA6247FP-Y,BA6238A ●Block diagram and pin configuration BA6238A VCC2 VCC1 C1 IN1 IN2 IN3 4 R2 5 6 GND CTRL 8 VR R3 R1 Technical Note 9 TSD 7 1 OUT2 2 M C2 OUT1 10 M C3 OUT3 3 C4 C5 Fig.11 BA6238A Table 2 BA6238A Pin 1 2 3 4 5 6 7 8 9 10 Name GND OUT2 OUT3 IN1 IN2 IN3 VCC1 VR VCC2 OUT1 GND Driver output Driver output Control input Control input Control input Power supply (small signal) GND IN1 IN2 OUT2 OUT3 IN3 VR Function Reference voltage setting pin Power supply (driver stage) Driver output Fig.12 BA6238A (HSIP10) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 5/11 2011.05 - Rev.B OUT1 VCC1 VCC2 BA6247FP-Y,BA6238A ●External application components 1) Technical Note Resistor for the current limitation, R1 This is a current limiting resistor for collector loss reduction and at the time of short-circuited output. It depends on the power supply voltage used, etc., but choose resistance of about 5 to 10Ω. In addition, set resistance with utmost care to voltage drop caused by inrush current that flows when the motor is started. Resistors and zener diode for the output high voltage setting, R2, R3 and ZD These are the resistors and zener diode used when output high voltage is set. Zener diode ZD is recommended to be used instead of resistor R3 when the power supply voltage is unstable. Stabilization capacitor for the power supply line, C1 Please connect the capacitor of 1μF to 100μF for the stabilization of the power supply line, and confirm the motor operation. Phase compensating capacitor, C2, C3, C4, C5 Noise is generated in output pins or oscillation results in accord with the set mounting state such as power supply circuit, motor characteristics, PCB pattern artwork, etc. As noise oscillation measures, connect 0.01μF to 0.1μF capacitors. 2) 3) 4) ●Functional descriptions 1) Operation modes Table 3 Logic table, BA6247FP-Y / BA6238A IN1 L H L H IN2 L L H H IN3 L H L H L H L H OUT1 L H L H L L OUT2 L L H OPEN* OPEN* L OUT3 L OPEN* OPEN* L H L OPERATION Brake (stop) Motor 1, forward (OUT1 > OUT2) Motor 1, reverse (OUT2 > OUT1) Motor 2, forward (OUT1 > OUT3) Motor 2, reverse (OUT3 > OUT1) Brake (stop) * OPEN is the off state of all output transistors. Please note that this is the state of the connected diodes, which differs from that of the mechanical relay. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 6/11 2011.05 - Rev.B BA6247FP-Y,BA6238A 2) Technical Note Output high voltage setting This function optionally sets output voltage by the VR pin and controls the motor rotating speed. However, when the output high voltage is set to a low level, consumption at IC increases. Carry out thermal design with sufficient margin incorporated with the power dissipation (Pd) under the actual application condition taken into account. Please do not to exceed the VCC1 and VCC2 voltage forced to the VR pin voltage. a) BA6247FP-Y The circuit diagram associated with the output high voltage setting VR pin is as per shown on the right. The output high and low voltages VOH and VOL are expressed by: VOH = VR + ( VF(Q5) + VF(Q4) ) - ( VF(Q2) + VF(Q3) ) VOH ≈ VR VOL = VSAT(Q7) + VF(Q6) (Reference values; VSAT ≈ 0.2V, VF ≈ 0.7V) In addition, the relation of VREF voltage to output voltage is expressed by: VR < VCC1 - VSAT(Q1) - VF(Q4) - VF(Q5) VR < VCC2 - VSAT(Q3) + (VF(Q2) +VF(Q3)) - ( VF(Q4) + VF(Q5) ) VCC1 Q1 Q2 Q4 Q3 OUT Q7 Q6 VR GND VCC2 Q5 Fig.13 BA6247FP-Y Therefore, when the VR voltage condition is as follows, the output high voltage is restricted. VR > VCC1 - VSAT(Q1) - VF(Q4) - VF(Q5) VR > VCC2 - VSAT(Q3) + (VF(Q2) +VF(Q3)) - ( VF(Q4) + VF(Q5) ) VOH = VCC1 - VSAT(Q1) - VF(Q2) - VF(Q3) VOH = VCC2 - VSAT(Q3) b) BA6238A The circuit diagram associated with the output high voltage setting VR pin is as per shown on the right. The output high and low voltages VOH and VOL are expressed by: VOH = VR + ( VF(Q5) + VF(Q4) ) - ( VF(Q2) + VF(Q3) ) VOH ≈ VR Q1 VCC1 VCC2 Q2 Q4 Q3 OUT Q7 Q6 VR GND VOL = VSAT(Q7) + VF(Q6) (Reference values; VSAT ≈ 0.1V, VF ≈ 0.7V) In addition, the relation of VREF voltage to output voltage is expressed by: VR < VCC1 - VSAT(Q1) - VF(Q4) - VF(Q5) VR < VCC2 - ( VSAT(Q2) + VF(Q3) ) + (VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) Therefore, when the VREF voltage condition is as follows, the output high voltage is restricted. VR > VCC1 - VSAT(Q1) - VF(Q4) - VF(Q5) VR > VCC2 - ( VSAT(Q2) + VF(Q3) ) + (VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) VOH = VCC1 - VSAT(Q1) - VF(Q2) - VF(Q3) VOH = VCC2 - VSAT(Q2) - VF(Q3) Q5 Fig.14 BA6238A www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 7/11 2011.05 - Rev.B BA6247FP-Y,BA6238A Technical Note 3) Control input conditions The input threshold voltage has a positive temperature coefficient and is expressed by: ΔVIH ΔT = +2.8mV / ℃ ΔVIL ΔT = +1.6mV / ℃ The input pin is pulled up at about 15kΩ. Set input voltage with care not to exceed the maximum input voltage (internal voltage regulator). BA6247FP-Y ··· 6V BA6238A ··· 5V 4) Switching of rotating direction (FWD/REV) When the rotating direction is changed over by the motor rotating condition, switch the direction after the motor is temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditions as follows: via BRAKE: Longer than braking time*. (* the time required for the output L terminal to achieve potential below GND when brake is activated.) The motor in no drive might be influenced momentarily because the all driver outputs low at the brake. ●Interfaces VCC2 VCC1 VCC2 VCC1 VREG IN1 IN2 IN3 15k 5k 7k VR GND GND OUT1 OUT2 OUT3 OUT1 OUT2 OUT3 (BA6247FP-Y) VR (BA6238A) Fig. 15 IN1, IN2, IN3 Fig.16 VCC1, VCC2, OUT1, OUT2, OUT3, VR, GND www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 8/11 2011.05 - Rev.B BA6247FP-Y,BA6238A ●Notes for use 1) Technical Note Absolute maximum ratings Devices may be destroyed when supply voltage or operating temperature exceeds the absolute maximum rating. Because the cause of this damage cannot be identified as, for example, a short circuit or an open circuit, it is important to consider circuit protection measures – such as adding fuses – if any value in excess of absolute maximum ratings is to be implemented. Connecting the power supply connector backward Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when connecting the power supply lines, such as adding an external direction diode. Power supply lines Return current generated by the motor’s Back-EMF requires countermeasures, such as providing a return current path by inserting capacitors across the power supply and GND (10µF, ceramic capacitor is recommended). In this case, it is important to conclusively confirm that none of the negative effects sometimes seen with electrolytic capacitors – including a capacitance drop at low temperatures - occurs. Also, the connected power supply must have sufficient current absorbing capability. Otherwise, the regenerated current will increase voltage on the power supply line, which may in turn cause problems with the product, including peripheral circuits exceeding the absolute maximum rating. To help protect against damage or degradation, physical safety measures should be taken, such as providing a voltage clamping diode across the power supply and GND. Electrical potential at GND Keep the GND terminal potential to the minimum potential under any operating condition. In addition, check to determine whether there is any terminal that provides voltage below GND, including the voltage during transient phenomena. When both a small signal GND and high current GND are present, single-point grounding (at the set’s reference point) is recommended, in order to separate the small signal and high current GND, and to ensure that voltage changes due to the wiring resistance and high current do not affect the voltage at the small signal GND. In the same way, care must be taken to avoid changes in the GND wire pattern in any external connected component. Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) under actual operating conditions. Inter-pin shorts and mounting errors Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any connection error, or if pins are shorted together. Operation in strong electromagnetic fields Using this product in strong electromagnetic fields may cause IC malfunctions. Use extreme caution with electromagnetic fields. ASO - Area of Safety Operation When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO. Built-in thermal shutdown (TSD) circuit The TSD circuit is designed only to shut the IC off - when BA6238A driver outputs low - to prevent thermal runaway. It is not designed to protect the IC or guarantee its operation in the presence of extreme heat. Do not continue to use the IC after the TSD circuit is activated, and do not operate the IC in an environment where activation of the circuit is assumed. BA6247FP-Y TON [℃] THYS [℃] *All temperature values are typical. 2) 3) 4) 5) 6) 7) 8) 9) BA6238A 150 50 170 30 10) Capacitor between output and GND In the event a large capacitor is connected between the output and GND, if VCC and VIN are short-circuited with 0V or GND for any reason, the current charged in the capacitor flows into the output and may destroy the IC. Use a capacitor smaller than 1μF between output and GND. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 9/11 2011.05 - Rev.B BA6247FP-Y,BA6238A 11) Technical Note Testing on application boards When testing the IC on an application board, connecting a capacitor to a low impedance pin subjects the IC to stress. Therefore, always discharge capacitors after each process or step. Always turn the IC's power supply off before connecting it to or removing it from the test setup during the inspection process. Ground the IC during assembly steps as an antistatic measure. Use similar precaution when transporting or storing the IC. Switching of rotating direction (FWD/REV) When the rotating direction is changed over by the motor rotating condition, switch the direction after the motor is temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditions as follows: via BRAKE: Longer than braking time*. (* the time required for the output L terminal to achieve potential below GND when brake is activated.) 12) 13) Regarding the input pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements, in order to keep them isolated. P-N junctions are formed at the intersection of these P layers with the N layers of other elements, creating a parasitic diode or transistor. For example, the relation between each potential is as follows: When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode. When GND > Pin B, the P-N junction operates as a parasitic transistor. Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits, as well as operating malfunctions and physical damage. Therefore, do not use methods by which parasitic diodes operate, such as applying a voltage lower than the GND (P substrate) voltage to an input pin. Resistor Pin A Pin A P+ N P P+ Transistor (NPN) Pin B C B E B N E C Pin B N N Parasitic element N P+ N N P P+ P substrate Parasitic element GND P substrate Parasitic element GND GND GND Parasitic element Other adjacent elements Fig.17 Example of monolithic IC structure www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 10/11 2011.05 - Rev.B BA6247FP-Y,BA6238A ●Ordering part number Technical Note B A 6 Part No. 6247 6238A 2 4 7 F P - Y E 2 Part No. Package FP-Y: HSOP25 None: HSIP10 Packaging and forming specification E2: Embossed tape and reel None: Tube HSOP25 13.6 ± 0.2 (MAX 13.95 include BURR) Tape Quantity Embossed carrier tape 2000pcs E2 The direction is the 1pin of product is at the upper left when you hold 2.75 ± 0.1 25 14 7.8 ± 0.3 5.4 ± 0.2 1 13 1.95 ± 0.1 1.9 ± 0.1 0.25 ± 0.1 S 0.11 0.8 0.36 ± 0.1 12.0 ± 0.2 0.1 S 0.3Min. Direction of feed ( reel on the left hand and you pull out the tape on the right hand ) 1pin Direction of feed (Unit : mm) Reel ∗ Order quantity needs to be multiple of the minimum quantity. HSIP10 26.5±0.3 25±0.2 3.6±0.2 Container Quantity Direction of feed Tube 500pcs Direction of products is fixed in a container tube R1.6 27.0±0.5 16.2±0.2 1.2 6.4±0.5 1 10 2.54 0.6 0.8 1.3 8.4±0.3 1.6 0.5±0.1 (Unit : mm) ∗ Order quantity needs to be multiple of the minimum quantity. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 11/11 2011.05 - Rev.B 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 © 2011 ROHM Co., Ltd. All rights reserved. R1120A