Electronic Components Datasheet Search

Delete All
ON OFF
 ALLDATASHEET.COM Part No.DescriptionMarking X

## SI-7502 Datasheet(PDF) 4 Page - Sanken electric

 Part No. SI-7502 Description 5-Phase Stepper Motor Driver ICs Download 5 Pages Scroll/Zoom 100% Manufacturer SANKEN [Sanken electric] Direct Link http://www.sanken-ele.co.jp/en Logo

## SI-7502 Datasheet(HTML) 4 Page - Sanken electric

 4 / 5 page107SI-7502 (SLA5011/SLA6503)SI-7502 (SLA5011/SLA6503)5-Phase Stepper Motor Driver ICs (Pentagon Connection)Fig. AWaveform of output currentIOHOIOH(max)=0.212×Vb−0.01RsIOH(min)=0.169×Vb−0.03RsIOH(max) (Vb=5V)IOH(min)(Vb=5V)12345(Ω)(A)3210.50.2Sense resistor RsVRSH (max)=7.2×RX152.6+33.8×RX×Vb−0.01VRSH (min)=6.1×RX152.6+33.8×RX×Vb−0.03VRSH(max)(Vb=5V)VRSH(min) (Vb=5V)0.512510(KΩ)Variable current resistor Rx200.21.00.80.60.4(V)IOMIOMIOMIOM2×IOM2×IOMVCC4×IOMto SI-7502Sense resistor RsFig. B Output current vs. Current sense resistorFig. C Sense voltage vs. Variable current resistorFig. D Coil current flow at pentagonal drivingsDetermining the Output Current IO(Control Current)The main factors that determine the output current are currentsense resistor RS, supply voltage Vb, and variable current resis-tor RX.(1) Normal modeTo operate a motor at the maximum current level, set RX toinfinity (open).From Fig. A, when the maximum current ripple is designatedas IOH, its value will be,VRSH can be calculated as follows:VRSH=0.19×Vb−0.03 (center value)From equations (1) and (2), the output current IOH can becalculated as follows:The relationship between IOH and RS is shown in Fig. B.(2) Power down modeWhen an external resistor RX is connected, VRSH changes asshown in Fig. C even when RS is retained. Obtain a powerdown output current IOHPD from Fig. C and equation (1).sRelation between Output Current IO (ControlCurrent) and Motor Winding Current IOMThe SI-7502 uses the total current control system; therefore,the output current IO is different from the motor winding current.In a general pentagonal driving system, the current flows asshown in Figure D. The relation between IO and IOM is as follows:IO=4×IOMWith some driving systems, the relation can also be as follows:IO=2×IOMVRSHRSApplication Notes............................... (2)IOH=...................................................................... (1)IOH=(0.19×Vb×-0.03)1RS

## Related Electronics Part Number

 Part No. Description Html View Manufacturer SI-7500A 5-phase Stepper Motor Star Connection Unipolar Driver IC 1  2  3  4 Sanken electric SI-7600 3-Phase Stepper Motor Driver ICs 1  2  3  4  5 Sanken electric SLA7022MU 2-Phase Stepper Motor Unipolar Driver ICs 1  2  3  4  5  More Sanken electric MTD1361F Stepper Motor Driver ICs 1  2  3  4 Shindengen Electric Mfg.Co.Ltd SLA7027MU 2-Phase Stepper Motor Unipolar Driver ICs 1  2  3  4  5  More Sanken electric SLA7032M 2-Phase Stepper Motor Unipolar Driver ICs 1  2  3  4  5  More Sanken electric SLA7042M 2-Phase Stepper Motor Unipolar Driver ICs 1  2  3  4 Sanken electric SDK03M 2-Phase Stepper Motor Unipolar Driver ICs 1  2  3  4  5  More Sanken electric NJM3717 STEPPER MOTOR DRIVER 1  2  3  4  5  More New Japan Radio TMC249 High Current Microstep Stepper Motor Driver with Sensorless Stall D e t e c t i o n P rotection / Diagnosis and SPI Interface 1  2 List of Unclassifed Manufacturers