HIC (DC power input) 3-Phase Stepping Motor Drive IC for Universal Controller PMM3101 Micro step Outline The PMM3101 IC for stepping motor drive is a power hybrid IC (HIC) that consists of an energization mode generation circuit and a switching device to drive 3-phase stepping motors in a single package. It has been developed to facilitate the use of 3-phase stepping motors more easily so that you can easily configure a micro step drive device only with this HIC and a few peripheral parts. Features • • • • • Micro step sine wave drive driver Built-in current detection resistor Adopting MOSFET as the power drive device to reduce heat generation All-in-one package reducing the number of parts of the peripheral circuit 4 energization modes available with an external bit signal Maximum ratings (TC=25˚C) Condition Rating Unit Source voltage–1 Item VCC1 max Symbol VCC2=0V 37 V Source voltage–2 VCC2 max Without signal 7 V Input voltage Vin max Logic input terminal 7 V Phase current IO max VCC2=5V,Clock ≧ 100Hz 2 A Board temperature during operation Tc max ______ +105 ˚C Joint temperature Tj max ______ +150 ˚C Conservation temperature Tstg ______ –40~+125 ˚C Recommended operating conditions (Ta=15˚C) Item 31 Symbol Condition Rating Unit Source voltage–1 VCC1 With signal 16~30 V Source voltage–2 VCC2 Without signal 5.0±5% V Input voltage VIH ______ 0~VCC2 V Phase current–1 IO1 Without heat sink 1.0 A Phase current–2 IO2 TC=105˚C, Clock ≧ 100Hz 1.5 A DC~120 kHz 60 V Clock frequency Clock Pin 10 input frequency (rising time Tr and falling time Tf: 1.6É s or less) Phase driver withstand voltage VDSS ID=10mA(TC=25˚C) External Figures (unit: mm) 64 56 PMM3501 8.5 +0.2 2–Ø3.6–0.1 PMM3101 31 1 23 4 1 VCC1B VCC1C UO WO VO Vz VCC1A GND2 Vref Clock Mode A Mode B Hold CW/CCW Enable Reset GND1 VCC2 UI VI WI P.GND A 21 Name 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 16.5 Pin No. PMM3101 Pin connection 2.9 +0.2 0.5–0.05 2 (5.8) +0.2 0.4–0.05 24x2=48 Electrical characteristics (TC=25˚C, VCC1=24V, VCC2=5V) Rating Item VCC2 source current Effective output current Symbol ICCO Ioe Condition Enable="L" Each phase R/L = 2Ω/6mH, 2W2-3 phase energization Unit Min Standard – 6.1 0.32 0.37 Max 12 0.42 mA Arms FET diode forward voltage Vdf If=1A(RL=23Ω) – 1.0 1.6 V Output saturation voltage Vsat RL=23Ω – 0.45 0.56 V mA Output leak current IOL RL=23Ω – – 0.1 "H" level input voltage VIH Pins 10 to 16 4.0 – – V "L" level input voltage VIL Pins 10 to 16 – – 1.0 V Input current IIL 115 250 Vref input voltage VrH 0 – 440 23 Pins 10 to 16 = GND level Pull-up resistance: 20kΩ Pin 9 Pin 9 = 2.5V Vref input current Ir Internal resistance: 4.0kΩ PWM frequency FC – 550 µA VCC2/2 V 625 810 µA 31 39 kHz 32 HIC (DC power input) Function of each terminal Terminal name Function Input condition for operation Vref Motor current setting input – Clock Pulse input for motor drive Operates at the rising edge Hold Pause input Hold = "L" level "H" level = CW rotation "L" level = CCW rotation CW/CCW Motor rotational direction setting input Enable Power off input Enable = "L" level Reset System reset Reset = "L" level Energization mode table Input condition Mode A 1 step angle Energization mode Mode B Basic step division number (degree) L L 2EX 1.2 1 L H 2–3EX 0.6 2 H L W2–3EX 0.3 4 H H 2W2–3EX 0.15 8 Example of Application Circuit Vcc2(5V) PMM3101 Clock Mode A 11 Mode B 12 Hold 13 CW / CCW 14 Enable 15 Reset 16 + C4 6 18 10 R1 + C2 Vcc1 7 1 2 3 19 5 20 16~30V 3 2 1 4 21 + Vref 9 R2 C3 Stepping motor C1 17 8 22 23 P.GND Recommended circuit part constants C1 C2 C3 C4 220µF 2.2µF 0.1µF 10µF For the R1 and R2 constants, determine the Vref voltage according to the following equation. Vref (V) = motor current adjustment value (A/phase) x 1.3 Notice that 100Ω is recommended for R2 due to the configuration of the internal circuit of the PMM3101. Place the GND side of the source by-pass capacitor of VCC1 (C1) as close to pins 22 and 23 as possible to reduce noise. 33