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SLA7042 데이터시트(PDF) 2 Page - Sanken electric |
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SLA7042 데이터시트(HTML) 2 Page - Sanken electric |
2 / 4 page 45 SLA7042M/SLA7044M 2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support) SLA7042M/SLA7044M sInternal Block Diagram sDiagram of Standard External Circuit sOutput Current Formula K: Reference voltage setting rate by serial signal (See the internal block diagram) IO = • K VREF 3 RS VDDAVDDB OUT A OUT A OUT B OUT B REF A REF B GND A GND B RS A RS B 712 9 10 RS RS R2 C1 3 14 VREF R1 5V ENABLE 415 1 8 11 18 5 16 2 13 6 17 CLOCK A CLOCK B STROBE A STROBE B DATA A DATA B VCC C1 : 500 to 10000pF SLA7042M SLA7044M Enable COMP Phase Vref 0% 20% 40% 55.5% 71.4% 83% 91% 100% a 0 1 0 1 0 1 0 1 PWM Reset Ph. Reset Enable COMP Phase PWM Reset Reset OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (2 s) Latch Reference voltage Reference voltage ab c Ph. Shift register ab c Ph. Latch a b c Ph. a b c Shift register b 0 0 1 1 0 0 1 1 c 0 0 0 0 1 1 1 1 c 0 0 0 0 1 1 1 1 b 0 0 1 1 0 0 1 1 a 0 1 0 1 0 1 0 1 Vref 0% 20% 40% 55.5% 71.4% 83% 91% 100% µ OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (2 s) µ |
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