For brush motors Reversible motor drivers (up to 2A series) BA6219BFP-Y, BA6222 No.09008EAT03 Overview These motor drivers are full bridge drivers for brush motor applications, supporting output currents of up to 2A. The output modes are available in four modes, normal, reverse, stop (idling), and braking in accordance with input logic (2 inputs). The output voltage can be optionally set by reference voltage setting pin. Features 1) Large output current (lOMAX=2.2A) 2) Built-in thermal shutdown circuit 3) Output voltage can be optionally set by reference voltage setting pin 4) High output voltage can be set by low voltage input because of it has 11.4dB gain (BA6222) 5) Low standby current Applications Audio-visual equipment; PC peripherals; Car audios; Car navigation systems; OA equipments Absolute maximum ratings (Ta=25°C, All voltages are with respect to ground) Parameter Supply voltage Output current All other input pins Symbol TSTG Unit V 1 2.2* VIN Storage temperature BA6222 24 IOMAX TOPR Junction temperature BA6219BFP-Y VCC1, VCC2 Operating temperature Power dissipation Ratings -0.3 ~ VCC1 A -0.3 ~ VCC1+0.3 -25 ~ 75 -55 ~ 150 °C -55 ~ 125 2 V 3 °C Pd 1.45* 2.00* W Tjmax 150 125 °C *1 Do not, exceed Pd or ASO (Pulse at 1/100 duty: 500µs). *2 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/°C above 25°C. *3 HSIP10 package. Derated at 20mW/°C above 25°C. Operating conditions (Ta=25°C) Parameter Supply voltage www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ Symbol Ratings Unit VCC1, VCC2 8 ~ 18 V 1/10 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 Electrical characteristics (BA6219BFP-Y, unless otherwise specified, Ta=25°C and VCC1=VCC2=12V) Parameter Symbol Limits Min. Typ. Max. Unit Conditions Supply current 1 ICC1 - 1.2 2.5 mA Standby mode Supply current 2 ICC2 - 16 35 mA FWD/REV mode Supply current 3 ICC3 - 25 60 mA Brake mode Input threshold voltage H VIH 3.0 - VCC1 V Input threshold voltage L VIL 0 - 1.0 V VR bias current IVREF 0.6 1.2 2.4 mA RL=60Ω, VR=6.8V CD1 current ICD1 0.7 1.5 3.0 mA (IN1, IN2)=(H, L), CD1 -> GND CD2 current ICD2 0.7 1.5 3.0 mA (IN1, IN2)=(L, H), CD2 -> GND Output leak current IOL - - 1 mA (IN1, IN2)=(L, L), VCC2 current Output voltage H VOH 6.5 - - V RL=60Ω, VR=6.8V Output voltage L VOL - 1.2 V RL=60Ω, VR=6.8V Electrical characteristics (BA6222, unless otherwise specified, Ta=25°C and VCC1=VCC2=12V) Parameter Symbol Limits Min. Typ. Max. Unit Conditions Supply current 1 ICC1 - 1.2 2.5 mA Standby mode, VR=0V Supply current 2 ICC2 - 16 35 mA FWD/REV mode, VR=0V Supply current 3 ICC3 - 25 60 mA Brake mode, VR=0V Input threshold voltage H VIH 3.0 - VCC1 V Input threshold voltage L VIL 0 - 1.0 V IVREF - 1.2 5.0 µA VR=1.0V VR-OUT trans. gain GV 10.35 11.35 12.35 dB (IN1, IN2)=(H, L) or (L, H), IOUT=0.1A*1 CD1 current ICD1 0.7 1.5 3.0 mA (IN1, IN2)=(H, L), CD1 -> GND CD2 current ICD2 0.7 1.5 3.0 mA (IN1, IN2)=(L, H), CD2 -> GND Output leak current IOL - - 1 mA (IN1, IN2)=(L, L), VCC2 current Output voltage H VOH 9.5 - - V IOUT=0.1A, VR=5V Output voltage L VOL - 0.5 V IOUT=0.1A, VR=5V GV = 20 log Vout2 – Vout1 2V – 1V VR bias current *1 Vout1 = VOH-VOL @VR=1V Vout2 = VOH-VOL @VR=2V These voltages are stabilized value without any heat radiation board. www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 2/10 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 Electrical characteristic curves (Reference data) 25 1.5 1.0 0.5 40 -25°C 25°C 75°C 20 15 10 8 10 12 14 16 18 10 14 16 18 8 1.5 1.0 0.5 16 20 15 10 Supply Voltage: Vcc [V] 12 14 16 Output High Voltage: VOH [V] _ 7.5 7.0 -25°C 25°C 75°C 8 0.5 1 10 1.5 10.0 9.5 0.5 1 Fig.6 Supply current 3 (brake) (BA6222) 2.5 2.0 1.5 1.0 75°C 25°C -25°C 0.5 1.5 2 0 0.5 1 1.5 2 Output Current: Iout [A] Fig.8 Output high voltage (BA6222) Fig.9 Output low voltage (BA6219BFP-Y) 3 3 i) Without heat sink ii) Mounted on ROHM standard PCB 2.5 (70mm x 70mm x 1.6mm FR4 glas s-epox y board) i) 2.0W i) Package only 2 1.5 1.0 Pd [W] 2 2.0 Pd [W] Output Low Voltage: VOL [V]_ 18 Output Current: Iout [A] Output Current: Iout [A] 3.0 16 0.0 0 Fig.7 Output high voltage (BA6219BFP-Y) 14 3.0 75°C 25°C -25°C 10.5 2 12 Supply Voltage: Vcc [V] 9.0 6.0 0 -25°C 25°C 75°C Fig.5 Supply current 2 (reverse) (BA6222) 11.0 6.5 20 Supply Voltage: Vcc [V] 75°C 25°C -25°C 18 30 18 Output Low Voltage: VOL [V]_ 8.0 16 10 8 Fig.4 Supply current 1 (standby) (BA6222) 14 40 -25°C 25°C 75°C 18 12 Fig.3 Supply current 3 (brake) (BA6219BFP-Y) 10 14 10 Supply Voltage: Vcc [V] Supply Current: Icc3 [mA]_ Stand-by Current: Icc2 [mA]_ Circuit Current: Icc1 [mA] _ 12 25 -25°C 25°C 75°C 12 -25°C 25°C 75°C Fig.2 Supply current 2 (reverse) (BA6219BFP-Y) 2.0 10 20 Supply Voltage: Vcc [V] Fig.1 Supply current 1 (standby) (BA6219BFP-Y) 8 30 10 8 Supply Voltage: Vcc [V] Output High Voltage: VOH [V] _ Supply Current: Icc3 [mA]_ -25°C 25°C 75°C Stand-by Current: Icc2 [mA]_ Circuit Current: Icc1 [mA] _ 2.0 ii)1.45W 1 75°C 25°C -25°C 0.5 0.0 0 0.5 1 1.5 1 i)0.85W 0 2 Output Current: Iout [A] Fig.10 Output low voltage (BA6222) www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 0 0 25 50 75 100 125 150 AMBIENT TEMPERATURE [°C] Fig.11 Thermal derating curve (HSOP25) 3/10 0 25 50 75 100 125 150 AMBIENT TEMPERATURE [°C] Fig.12 Thermal derating curve (HSIP10) 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 Block diagram and pin configuration BA6219BFP-Y 10 VCC2 24 6 CTRL IN2 R1 C1 11 TSD IN1 Table 1 BA6219BFP-Y VCC1 OUT1 OUT2 M C4 15 8 19 20 FIN GND 7 VR 4 CD2 13 2 C3 GND GND CD1 C2 ZD Fig.13 BA6219BFP-Y NC CD1 NC VR NC IN1 GND GND IN2 NC VCC1 VCC2 NC CD2 Pin Name Function 2 CD1 Cross conduction control pin 4 VR Reference voltage setting pin 6 IN1 Control input (forward) 7 GND 8 IN2 GND Control input (reverse) 10 VCC1 Power supply (small signal) 11 VCC2 Power supply (driver stage) 13 CD2 Cross conduction control pin 15 OUT2 Driver output NC OUT1 NC NC NC GND 19 GND GND 20 GND GND 24 OUT1 Driver output GND FIN GND GND GND NC NC NC OUT2 NC Note: All pins not described above are NC pins. Fig.14 HSOP25 BA6222 7 8 TSD IN1 2 x4 5 VCC2 10 x4 6 1 FIN VR 4 CD2 9 3 C3 C5 R1 C1 OUT1 CTRL IN2 Table 2 BA6222 VCC1 OUT2 M C4 GND CD1 C2 ZD CD2 Name 1 GND GND Function 2 OUT1 Driver output 3 CD1 Cross conduction control pin 4 VR Reference voltage setting pin 5 IN1 Control input (forward) 6 IN2 Control input (reverse) 7 VCC1 Power supply (small signal) 8 VCC2 Power supply (driver stage) 9 CD2 Cross conduction control pin 10 OUT2 Driver output FIN GND GND OUT2 VCC2 IN2 VCC1 VR IN1 CD1 GND OUT1 Fig.15 BA6222 Pin Fig.16 HSIP10 www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 4/10 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 External application components 1) 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. 2) Zener diode for the output high voltage setting, ZD This is the zener diode used when output high voltage (VR pin voltage) is set. BA6219BFP-Y: Output high voltage ≈ zener voltage BA6222: Output high voltage ≈ fourfold zener voltage 3) 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. 4) Capacitors for the cross conduction control of output transistors, C2 and C3 Simultaneous ON is prevented by delaying base potential buildup of transistors which enter output high state. Set the capacitors from 0.01μF to 1μF and make sure inrush current caused by simultaneous output ON does not flow when output mode is switched. 5) Phase compensating capacitor, C4 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. 6) Phase compensating capacitor, C5 (BA6222 only) The gain about fourfold VR pin voltage in output high voltage is set, and the output oscillates easily. Please connect the capacitor of 3300pF to 0.1µF as an oscillation prevention measures when the oscillation is seen in the output voltage. Functional descriptions 1) Operation modes Table 3 Logic table IN1 IN2 OUT1 OUT2 Operation L L OPEN* OPEN* Stop (idling) H L H L Forward (OUT1 > OUT2) L H L H Reverse (OUT1 < OUT2) H H L L 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. a) Stand-by mode In stand-by mode, all output power transistors are turned off, and the motor output goes to high impedance. b) Forward mode This operating mode is defined as the forward rotation of the motor when the OUT1 pin is high and OUT2 pin is low. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT1 to OUT2. c) Reverse mode This operating mode is defined as the reverse rotation of the motor when the OUT1 pin is low and OUT2 pin is high. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT2 to OUT1. d) Brake mode This operating mode is used to quickly stop the motor (short circuit brake). www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 5/10 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 2) Output high voltage setting This function optionally sets output voltage by the output high voltage setting 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. a) BA6219BFP-Y The circuit diagram associated with the output high voltage setting VR pin is as per shown on the right. The maximum output voltage VOMAX is expressed by: VCC1 Q1 Q2 VCC2 Q3 VOMAX = VCC1 - ( VSAT(Q1) + VF(Q2) + VF(Q3) + VF(Q4) ) Q5 Q6 Q4 Q7 In addition, the relation of VR voltage to output voltage at VOMAX or lower is expressed by: OUT VR Fig. 17 VOH = VR + ( VF(Q5) + VF(Q6) + VF(Q7) ) - ( VF(Q2) + VF(Q3) + VF(Q4) ) VOH = VR + ΔVF ≈ VR ΔVF depends on the output current but is nearly VOH=VR. (Reference values; VSAT ≈ 0.25V, VF ≈ 0.75V) b) BA6222 As the relationship between the output high voltage setting pin VR voltage and output high voltage VOH is expressed by: VOH VCC1 - 3VF - VSAT BA6222 VOH ≈ 4 x VR + VOFS BA6219BFP-Y In such event, VOFS means the offset voltage, which varies in accord with output current and chip temperature. The VR voltage region can be classified into three categories in accord with the output state: (A) Output high voltage 0V offset region (B) Fourfold gain region (C) Output voltage saturated region (A) (B) (C) VR Fig. 18 Using this function with the VR pin connected to a load which has output impedance of several hundreds ohm may result in oscillation. In such event, connect a capacitor of 3300pF or higher to about 0.1μF across VR and GND and make sure that the motor is free of oscillation. c) Power supply voltage range of VR voltage When output voltage control pin (VR) is used: VOH VR < VCC1 - ( VSAT(Q1) + VF(Q5) + VF(Q6) + VF(Q7) ) VR ≈ VCC1 - 2.5V VR < VCC2 - ( VSAT(Q3) - VF(Q3) - VF(Q2) ) - ( VF(Q5) + VF(Q6) + VF(Q7) ) VR ≈ VCC2 - 1V The output voltage control function does not operate in the region outside this range. In addition, when the VR pin is not used, use by shorting VR to VCC1. Control range Saturation range VR Fig. 19 3) 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.) via OPEN: The time longer than 1 ms is recommended. www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 6/10 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 Interfaces IN1 IN2 20k 10k VR 10k 10k Fig. 20 IN1, IN2 (BA6219BFP-Y, BA6222) Fig.21 VR (BA6222) VCC2 VCC1 CD1 CD2 OUT1 OUT2 VR GND Fig. 22 VCC1, VCC2, VR, CD1, CD2, GND (BA6219BFP-Y) VCC2 VCC1 CD1 CD2 OUT1 OUT2 GND Fig. 23 VCC1, VCC2, CD1, CD2, GND (BA6222) Notes for use 1) 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. 2) 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. www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 7/10 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 3) 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. 4) 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. 5) Thermal design Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) under actual operating conditions. 6) 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. 7) Operation in strong electromagnetic fields Using this product in strong electromagnetic fields may cause IC malfunctions. Use extreme caution with electromagnetic fields. 8) ASO - Area of Safety Operation When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO. 9) Built-in thermal shutdown (TSD) circuit The TSD circuit is designed only to shut the IC off 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. BA6219BFP-Y BA6222 TON [°C] 180 150 THYS [°C] 15 15 *All temperature values are typical. 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. 11) 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. www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 8/10 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 12) 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 B C Transistor (NPN) B Pin A N P+ N P+ P Parasitic element N N B N P+ P+ P P substrate N C E P substrate GND Parasitic element Pin B E GND GND Parasitic element GND Parasitic element Other adjacent elements Appendix: Example of monolithic IC structure Ordering part number B A ROHM part number 6 2 Type 6219B 6222 www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ 1 9 B F P Package FP-Y: HSOP25 None: HSIP10 9/10 - Y - E 2 Packaging spec. E2: Embossed taping None: Container tube 2009.04 - Rev.A Technical Note BA6219BFP-Y, BA6222 HSOP25 <Dimension> <Tape and reel information> 13.6 ± 0.2 7.8 ± 0.3 0.3Min. 13 1.95 ± 0.1 Embossed carrier tape 2000pcs Direction of feed E2 (Holding the reel with the left hand and pulling the tape out with the right, pin 1 will be on the upper left-hand side.) 0.25 ± 0.1 1234 1234 1234 1Pin Reel (Unit:mm) 1234 1234 0.1 0.36 ± 0.1 1234 0.8 1234 0.11 1 1.9 ± 0.1 14 5.4 ± 0.2 25 2.75 ± 0.1 Tape Quantity Direction of feed *Orders should be placed in multiples of package quantity. HSIP10 <Dimension> <Tape and reel information> 26.5 ± 0.3 3.6 ± 0.2 25 ± 0.2 Tube Quantity 500pcs Direction of feed Direction of products is fixed in a container tube. 8.4 ± 0.3 1.2 1.6 16.2 ± 0.2 6.4 ± 0.5 27.0 ± 0.5 R1.6 Container 1 10 2.54 0.6 0.8 1.3 0.5 ± 0.1 (Unit:mm) www.rohm.com c 2009 ROHM Co., Ltd. All rights reserved. ○ *Orders should be placed in multiples of package quantity. 10/10 2009.04 - 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, fuel-controller 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 © 2009 ROHM Co., Ltd. All rights reserved. R0039A