BP5801

High efficiency switching-type motor driver BP5801 The BP5801 is an output-variable type DC motor driver module. This module can change the output voltage for driving the DC motor by inputting PWM signal or DC voltage into the control terminal. The power conversion efficiency is high, and power saving of the application can be realized, since the input voltage can be changed into the specified output voltage by the switching system. Further, this module can be used as the output-variable type DC / DC converter. Applications Refrigerator,The rotation-control type DC motor driver and the output-variable type DC / DC converter Features 1) Electrical power loss is small even when there is a difference between the input voltage and motor driving voltage, since electrical power conversion efficiency is high (90% Typ.) as the switching system is employed for changing the voltage. 2) Motor driving voltage can be set to any optional value by the control signal. 3) The control signal corresponds with both PWM signal and DC voltage. 4) The control terminal is easy to be designed, as it is only one-terminal type. 5) This can be used as the output-variable type DC / DC converter as well. 6) Space-saving package of SIP. Absolute maximum ratings (Ta=25°C) Parameter Symbol VIN IO VCTL Topr Tstg Limits 20 0.4 (1.3 at peak) 6 −10 ∼ +60 −25 ∼ +80 Unit V A V °C °C Remarks − Power supply voltage Output current CTL input voltage ∗1 3pin − − Operating temperature range Storage temperature range ∗1 Derating is necessary. Based on the derating curve. Recommended operating conditions (Ta=25°C) Parameter Symbol VIN Min. 12 Typ. 13 Max. 15 Unit V Power supply voltage 1/6 BP5801 Block diagram 9 1 DRIVE CIRCUIT HIGH SPEED PWM CONTROL CIRCUIT 3 VOLTAGE CONVERSION CIRCUIT 5 6 Pin descriptions Pin No. 1 2 3 5,6 7,8 9 Pin name OUT TP CTL GND TP VIN Function Output pin for motor drive : connect a low impedance capacitor with a recommended capacitance of 470µF / 35V. Test pin ; use this internally connected pin in OPEN mode. Output voltage control pin ; PWM signal or DC signal is inputted. The output voltage can be changed either by changing the duty of PWM signal or by changing the DC voltage value. Ground pin Test pin ; use this internally connected pin in OPEN mode. Input pin ; connect a low impedance capacitor with a recommended capacitance of 100µF / 35V. Electrical characteristics Parameter Output voltage Ripple noise voltage Efficiency CTL frequency CTL input resistance Standby current Circuit current at no signal ∗1 Spike (unless otherwise noted, Ta=25°C, VIN=13V, Io=0.4A, fCTL=50Hz) Symbol VO ν η fCTL RCTL IIN IIN Min. 11 5 − 80 50 200 − − Typ. 12 6 − 90 − − 4 4 Max. 13 7 50 − − − − − Unit V V mVPP % Hz kΩ mA mA Pin 3 Pin 3=GND Pin 3=GND DCTL=50% DCTL=100% DCTL=100% Conditions DCTL=100% (5V fixed) ∗1 noise is not included. 2/6 BP5801 Measurement circuit BP5801 1 2 3 5 6 7 8 9 A + IO C2 V VO CTL See Fig.2 VIN V + C1 A IIN VIN C1 : 100µF / 35V (Low impedance) C2 : 470µF / 35V (Low impedance) Fig.1 Output voltage control signal (Pin 3) 5.00V 1 fCTL= − T 0V TH DCTL= − ×100 (%) T (Duty of control signal) TH T Note) Output voltage is different by the level of "H" and "L" TL Fig.2 Circuit operations (1) Description BP5801 is a DC motor driver that can establish any output voltage by inputting PWM signal and DC voltage into the control pin (3pin).Electrical power loss is small even when there is a difference between the input voltage and output voltage, since changing from the input voltage into the specified output voltage can be made by the switching system. This module is most suitable in case that the number of rotation of the motor is controlled by changing the driving voltage, or in case that the motor of a lower specified voltage than 13V is driven by the electrical power supply of 13V. (2) Control signals 1) PWM signal The output voltage will be controlled by that duty. The larger the duty is, the higher the output voltage will be. It is necessary to be attentive, because the output voltage value changes depending on the Hlevel and L-level values of PWM signal as well, at this time. 2) DC voltage The output voltage will be controlled by PC voltage value. The higher the voltage, the higher the output voltage will be. 3/6 BP5801 Application example BP5801 1 2 3 5 6 7 8 9 Be sure to use fuse for safety 13V 470µF + + DC MOTOR 100µF Control signal Fig.3 Operation notes (1) The output current should be reduced according to an increase in the output voltage or ambient temperature. Use the module within the derating curve range. (2) The protection circuit for output current is not incorporated. Be sure to take safety measures such as fusing if short-circuit loads or overcurrent is probable. (3) External capacitor Since the switching system is employed for the purpose of changing the voltage, ripple current flows to the capacitor to be added to pins 1, 9. Select the product of which allowable ripple current is more than this value. Electrical characteristic curves 1.5 Ambient temperature : −10˚C ∼ 60˚C 15 15 for PWM OUTPUT VOLTAGE : VO (V) OUTPUT VOLTAGE : VO (V) for DC voltage OUTPUT CURRENT : IO (A) 1 10 10 0.5 Operating : 2sec. Standby : 2min. 5 5.00V 0V fCTL=50Hz 0 5 Continuous operation 0 0 5 10 15 OUTPUT VOLTAGE : (V) 0 0 50 DUTY : DCTL (%) 100 0 1 2 3 4 5 DC VOLTAGE : VCTL (V) Fig.4 Derating curve Fig.5 Output voltage vs. Duty Fig.6 Output voltage vs. DC voltage 4/6 BP5801 External dimensions (Units : mm) 28.2Max. 1pin SIDE MARK 21.5Max. Marked side 11.2Max. Marked side 4±1.0 1 2 3 5 0.5±0.1 1.3±0.2 67 8 9 0.25±0.05 P= 2.54±0.2 7.8Max. 5.8Max. 2.54×8=20.32 3.4Max. SIP9 5/6 Precautions on Use of ROHM Power Module Safety Precautions 1) The products are designed and produced for application in ordinary electronic equipment (AV equipment, OA equipment, telecommunication equipment, home appliances, amusement equipment etc.). If the products are to be used in devices requiring extremely high reliability (medical equipment, transport equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or operational error may endanger human life and sufficient fail-safe measures, please consult with the Company's sales staff in advance. If product malfunctions may result in serious damage, including that to human life, sufficient fail-safe measures must be taken, including the following: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits in the case of single-circuit failure 2) The products are designed for use in a standard environment and not in any special environments. Application of the products in a special environment can deteriorate product performance. Accordingly, verification and confirmation of product performance, prior to use, is recommended if used under the following conditions: [a] Use in various types of liquid, including water, oils, chemicals, and organic solvents [b] Use outdoors where the products are exposed to direct sunlight, or in dusty places [c] Use in places where the products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use in places where the products are exposed to static electricity or electromagnetic waves [e] Use in proximity to heat-producing components, plastic cords, or othe flammable items [f] Use involving sealing or coating the products with resin or other coating materials [g] Use involving unclean solder or use of water or water-soluble cleaning agents for cleaning after soldering [h] Use of the products in places subject to dew condensation 3) The products are not radiation resistant. 4) The Company is not responsible for any problems resulting from use of the products under conditions not recommended herein. 5) The Company should be notified of any product safety issues. Moreover, product safety issues should be periodically monitored by the customer. Precautions Regarding Application Example and External Circuits 1) If change is made to the constant of an external circuit, allow a sufficient margin due to variations of the characteristics of the products and external components, including transient characteristics, as well as static characteristics. Please be informed that the Company has not conducted investigations on whether or not particular changes in the application examples or external circuits would result in the infringement of patent rights of a third party. 2) The application examples, their constants, and other types of information contained herein are applicable only when the products are used in accordance with standard methods. Therefore, if mass production is intended, sufficient consideration to external conditions must be made. Prohibitions Regarding Industrial Property 1) These Specifications contain information related to the Company’s industrial property. Any use of them other than pertaining to the usage of appropriate products is not permitted. Duplication of these Specifications and its disclosure to a third party without the Company’s permission is prohibited. 2) Information and data on products, including application examples, contained in these specifications are simply for reference; the Company does not guarantee any industrial property rights, intellectual property rights, or any other rights of a third party regarding this information or data. Accordingly, the Company does not bear any responsibility for: [a] infringement of the intellectual property rights of a third party [b] any problems incurred by the use of the products listed herein. 3) The Company prohibits the purchaser of its products to exercise or use the intellectual property rights, industrial property rights, or any other rights that either belong to or are controlled by the Company, other than the right to use, sell, or dispose of the products. 6/6 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.0