panasonic AN8495SB free download

File name AN8495.pdf

New Stepping Motor Dr ive IC AN8495SB I Overview AN8495SB is a stepping-motor-driving IC, created by using a D-MOS process, and provides a maximum output of 30V at 1.5A. By the PWM drive and 2-bit constant-current-chopping-drive method, the winding 1-2 phase drive is possible. Unit:mm 18.40±0.20 (5.15) (4.80) 28 22 21 15 (1.315) 10.93±0.30 8.30±0.20 0.30-0.05 +0.10 0° to 10° (1.20) 0.80 0.35+0.10 -0.05 G 4-phase input (W1-2 phase excitation ) G 2-bit current level switching. G Built-in noise canceler. G Built-in phase-change thru-current protection function. G Built-in flywheel diode SEATING PLANE 0.10±0.10 2.70±0.20 I Features 0.65±0.20 1 7 (6.40) 8 14 SEATING PLANE HSOP042-P-0400 I Applications G Printer G FAX G PPC ¶ The products and specifications are subject to change without any notice. Please ask for the latest product standards to guarantee the satisfaction of your product requirements. 1 Kotari Yakemachi, Nagaokakyo, Kyoto, 617-8520 Japan E00094AE Tel. (075) 951-8151 http://www.panasonic.co.jp/semicon/ New publication, effective from Sep. 7. 2001 I Block Diagram VCC ENABLEA PHA1 IN0 IN1 IN2 IN3 ENABLEB PHB1 25 7 1 3 4 Senser Current 23 FIN 24 OSC Senser Current 5 6 9 2 20 19 BLANK R Q S R S Q CHARGE PUMP CIRCUIT ENA.off Vref TSD Signal Vref GATE CIRCUIT 8 17 16 Rs 26 15 FIN 14 13 Rs 12 22 GATE CIRCUIT 21 VM * A voltage is applied externally to Terminals PHA1, PHB1, IN0 to 3, ENABLEA, ENABLEB, VREFA and VREFV, and may cause an overcurrent. To protect the device from overcurrent, insert an overcurrent protective resistor (1K or over). I Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PHA1 PHB1 IN0 IN1 IN2 IN3 ENABLEA Function A phase changeover terminal B phase changeover terminal A phase output torque control 1 A phase output torque control 2 B phase output torque control 1 B phase output torque control 2 A phase start/stop signal input Supply terminal for Motor 1 B phase start/stop signal input Motor drive B phase output 2 B phase current detector Motor drive B phase output 1 Motor drive A phase output 2 Pin No. 16 17 18 19 20 21 22 23 24 25 26 27 28 FIN RCSA AOUT1 N.C BC1 BC2 VPUMP Function A phase current detector Motor drive A phase output 1 Capacitor for charge pump circuit 1 Capacitor for charge pump circuit 2 Charge pump circuit output Supply terminal for Motor 2 VM2 VM1 ENABLEB VREFA A phase torque ref. voltage input VREFB B phase torque ref. voltage input VCC GND N.C N.C GND Supply terminal Signal GND Signal GND N.C N.C BOUT2 RCSB BOUT1 AOUT2 I Absolute Maximum Ratings Parameter Storage temperature Operating ambient temperature Supply voltage Supply current Power dissipation Motor supply voltage Output voltage Motor drive current Flyhoile diode current Charge pump circuit voltage Symbol Tstg Topr VCC ICC PD VM1/VM2 VOUT IOUT If VPUMP Rating -55 to +150 -20 to +70 7.0 30 1.04 30 30 ±1.5 1.5 40 Unit °C °C V mA W V V A A V Pin=21 2 Pin=8,22 Pin=12,14