전자부품 데이터시트 검색엔진 |
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STK672-080 데이터시트(PDF) 6 Page - Sanyo Semicon Device |
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STK672-080 데이터시트(HTML) 6 Page - Sanyo Semicon Device |
6 / 17 page No. 6507-6/17 STK672-080 7 5 A Two-phase stepping motor AB 6 14 14 8 14 14 9 14 14 12 15 11 13 10 14 + + VCC2=5V VCC2=5V SG PG Vref Ro1 Ro2 VCC2=5V CLK ENABLE CBW Vf ≈ 0.3V RESET MoI VCC1=10V to 45V STK672-080 A13261 B BB RoX 4 3 2 1 Ioave IOL IOH 0A Motor current waveform A13262 Simplified power-on reset circuit (This circuit cannot be used to detect drops in the power-supply voltage.) A value of about 100 Ω is recommended for RO2 to minimize the influence of the Vref pin internal impedance, which is 6 k Ω. ROX: The input impedance is 6 kΩ ±30%. Power-on reset The application must perform a power-on reset operation when VCC2 power is first applied to this hybrid IC. Application circuit that used 2W1-2 phase excitation (microstepping operation) mode. Setting the Motor Current The motor current IOH is set by the Vref voltage on the hybrid IC pin 7. The following formula gives the relationship between IOH and Vref. ROX = (RO2 × 6 kΩ) ÷ (RO2 + 6 kΩ) ·············(1) Vref = VCC2 × ROX ÷ (RO1 + ROX) ··············(2) 1 Vref IOH = — × —— ·············································(3) k RS K: 4.7 (Voltage division ratio), Rs: 0.15 Ω (The hybrid IC’s internal current detection resistor (precision: ±3%) Applications can use motor currents from the current (0.05 to 0.1 A) set by the duty of the frequency set by the oscillator up to the limit of the allowable operating range, IOH = 2.8 A Function Table M2 0 0 1 1 M1 0 1 0 1 Phase switching clock edge timing M3 1 2 phase excitation 1-2 phase excitation W1-2 phase excitation 2W1-2 phase excitation Rising edge only 0 1-2 phase excitation W1-2 phase excitation 2W1-2 phase excitation 4W1-2 phase excitation Rising and falling edges Forward Reverse CWB 0 1 ENABLE Motor current is cut off when low RESET Active low |
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유사한 설명 - STK672-080 |
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