1/3 Structure Silicon Monolithic Integrated Circuit Product series PWM Driver for combi drive Type BD7790KVT Function ・3-phase-sensor-less system, therefore don’t need three hall sensors for spindle motor driver. ・Stability high-speed start from the state of the stop for spindle motor driver. 特 長 ○Absolute maximum ratings Parameter Power MOS supply voltage Control circuit power supply voltage Maximum driver output current Symbol Limits Unit PVcc 6 V Vcc 6 V IoMAX 3 ＃1 A Pd 1.37 ＃2 W Power dissipation Operating temperature range Topr -30～85 ℃ Storage temperature range Tstg -55～150 ℃ Tjmax 150 ℃ Joint part temperature #1 The current is guaranteed 3.0A in case of the current is turned on/off in a duty-ratio of less than 1/10 with a maximum on-time of 5ms and when short brake. #2 PCB (70mm×70mm×1.6mm,occupied copper foil is less than 3%,glass epoxy standard board) mounting. Reduce power by 11.0mW for each degree above 25℃. ○Recommended operating conditions(Ta=-30～+85℃) 〔Set the power supply voltage taking allowable dissipation into considering〕 Parameter Power MOS supply voltage Control circuit power supply voltage Symbol MIN TYP MAX Unit PVcc 4.0 5.0 5.5 V Vcc 4.0 5.0 5.5 V This product described in this specification isn’t judged whether it applies to COCOM regulations. Please confirm in case of export. This product isn’t designed for protection against radioactive rays. Status of this document The Japanese version of this document is the formal specification. A customer may use this translation version only for a reference to help reading the formal version. If there are any differences in translation version of this document, formal version takes priority. Application example ･ROHM cannot provide adequate confirmation of patents. ･The product described in this specification is designed to be used with ordinary electronic equipment or devices (such as audio-visual equipment, office-automation equipment communication devices, electrical appliances, and electronic toys). Should you intend to use this product with equipment or devices which require an extremely high level of reliability and the malfunction of which 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. ･ROHM assumes no responsibility for use of any circuits described herein, conveys no license under any patent or other right, and make no representations that the circuits are free from patent infringement. REV. A 2/3 ○Electrical characteristics (Unless otherwise noted Ta=25℃, Vcc=PVcc=5V, Vref=1.25V, RL(ACT,STP,LOAD)=8Ω+47μH, RL(SP)=2Ω+47μH, RNF=0.2Ω, CTL1,2=3.3V, GVSW=0V, VIN1,2,3,4,5,6=OPEN, VCOM=OPEN, VCCOM=OPEN, VCOUT=OPEN) Parameter Symbol MIN. TYP. MAX. Unit Condition Quiescent current ICC － 8 20 mA CTL1,2=H Circuit current Current in standby mode IST － － 0.2 mA CTL1,2=L Input dead zone (one side) VDZACT1,2,3 － － 3 mV Output offset voltage VOO1,2,3 -50 － 50 mV Actuator driver Voltage gain (CH1,2,3) GVC1,2,3 15.5 17.5 19.5 dB External input resistor 10kΩ block Output On resistor（top and bottom） RON1,2,3 － 1.2 1.8 Ω Io=500mA PWM frequency f1,2,3CH 215 310 405 kHz Input dead zone (one side) VDZ4,5 10 30 50 mV Output offset voltage VOO4,5 -50 － 50 mV Stepping driver Voltage gain GVC4,5 15.5 17.5 19.5 dB block Output On resistor（top and bottom） RON4,5 － 1.6 2.4 Ω Io=500mA PWM frequency f4,5CH 215 310 405 kHz Input dead zone (one side) VDZ6 20 60 100 mV CTL1=H, CTL2=L Output offset voltage VOO6 -50 － 50 mV CTL1=H, CTL2=L Loading driver Voltage gain GVC6 15.5 17.5 19.5 dB CTL1=H, CTL2=L block Output On resistor（top and bottom） RON6 － 1.8 2.7 Ω Io=500mA, CTL1=H, CTL2=L PWM frequency f6CH 215 310 405 kHz CTL1=H, CTL2=L Input dead zone of gm1(one side) VDZSP1 2 30 100 mV Input dead zone of gm2(one side) VDZSP2 6 90 300 mV GVSW=M Input dead zone of gm3(one side) VDZSP3 10 150 500 mV GVSW=H Input output gain 1 gm1 0.88 1.1 1.32 A/V Spindle driver Input output gain 2 gm2 0.28 0.36 0.44 A/V GVSW=M block Input output gain 3 gm3 0.17 0.22 0.27 A/V GVSW=H Output On resistor（top and bottom） RONSP － 0.6 1.4 Ω Io=500mA Output limit voltage VLIMSP 0.18 0.22 0.26 V PWM frequency fSP － 167 － kHz Vref drop mute ON threshold voltage VMVref － 0.7 1.0 V Vcc drop mute ON threshold voltage VMVccD 3.2 3.6 4.0 V CTL1 L voltage VCTL1L 0 － 1.0 V Others CTL1 H voltage VCTL1H 2.0 － 3.3 V CTL2, GVSW L voltage VCTL2L, VGVL 0 － 1.0 V CTL2, GVSW M(Hi-z) voltage VCTL2M, VGVM 1.6 － 2.0 V OPEN（Hi-z）is also available. CTL2, GVSW H voltage VCTL2H, VGVH 2.6 － 3.3 V GVSW Gain mode L gm1 M（Hi-z） gm2 H gm3 CTL1 CTL2 Brake mode SPINDLE Output CH1,2,3 Output CH4,5 Output L ― Hi-Z Hi-Z Hi-Z L M ACTIVE Hi-Z Hi-Z Short brake H ACTIVE ACTIVE ACTIVE L Hi-Z Hi-Z ACTIVE H M（Hi-z） Reverse brake ACTIVE Hi-Z Hi-Z H ACTIVE ACTIVE ACTIVE Please supply the middle level voltage for CTL2 when using it in the mode of CTL1=L and CTL2=M. CH6 Output Hi-Z Hi-Z Hi-Z ACTIVE Hi-Z Hi-Z ○Package outlines BD7790 (UNIT : mm) REV. A 3/3 ○Block diagram / Application circuit PVcc1 10kΩ 5V VO1F IN1 Logic Pre driver POW ER MOS VO1R 470Ω 0.047μF 10kΩ CNF1 NF amp VO2F IN2 Logic Pre driver POW ER MOS VO2R 470Ω 0.047μF 10kΩ CNF2 NF amp VO3F IN3 Logic Pre driver POW ER MOS VO3R 470Ω 0.047μF CNF3 NF amp OSC IN6 VO6F Logic Pre driver POW ER MOS VO6R PGND1 NF amp Logic 0.033μF PVcc3 5V VO4F IN4 CNF4 Pre driver POW ER MOS M VO4R NF amp VO5F IN5 Logic Pre driver POW ER MOS VO5R PGND3 0.033μF CNF5 NF amp OSC 1000pF COUT 5V CCOM 100kΩ COM FG PVcc21 OSC INSP BEMF DETECTER Logic Pre driver POW ER MOS PVcc22 U V W 5V LIMIT RNF1 RNF2 GVSW GVSW CTL1 CTL2 RNF=0.2Ω STBY/BMSW T.S.D. Vcc TEST1 TEST2 22μ F GND TEST3 Vref REV. A 5V 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 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 which 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. It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM cannot be held responsible for any damages arising from the use of the products under conditions out of the range of the specifications or due to non-compliance with the NOTES specified in this catalog. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact your nearest sales office. ROHM Customer Support System www.rohm.com Copyright © 2007 ROHM CO.,LTD. THE AMERICAS / EUPOPE / ASIA / JAPAN Contact us : webmaster@ rohm.co. jp 21, Saiin Mizosaki-cho, Ukyo-ku, Kyoto 615-8585, Japan TEL : +81-75-311-2121 FAX : +81-75-315-0172 Appendix1-Rev2.0