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SLA7022MU Fiches technique(PDF) 6 Page - Sanken electric |
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SLA7022MU Fiches technique(HTML) 6 Page - Sanken electric |
6 / 7 page 10 SLA7022MU/SLA7029M/SMA7022MU/SMA7029M SLA7022MU/SLA7029M/SMA7022MU/SMA7029M 2-Phase Stepper Motor Unipolar Driver ICs (2-Phase Excitation) 35 30 25 20 15 10 5 0 200 500 1K Motor : PH265-01B Motor current IO=0.8A Ta=25 °C VCC=24V, VS=24V 2-phase excitation Response frequency (pps) Without heatsink Natural cooling TC ( 4 pin) 30 25 20 15 10 5 0 200 500 1K Motor : PH265-01B Motor current IO=0.8A Ta=25 °C VCC=24V, VS=24V 2-phase excitation Response frequency (pps) Without heatsink Natural cooling TC ( 4 pin) 35 30 25 20 15 10 5 0 200 500 1K Motor : PH265-01B Motor current IO=0.8A Ta=25 °C VCC=24V, VS=24V 2-phase excitation Response frequency (pps) Without heatsink Natural cooling TC ( 4 pin) 30 25 20 15 10 5 0 200 500 1K Motor : PH265-01B Motor current IO=0.8A Ta=25 °C VCC=24V, VS=24V 2-phase excitation Response frequency (pps) Without heatsink Natural cooling TC ( 4 pin) Thermal characteristics SLA7022MU SLA7029M SMA7022MU SMA7029MU sThermal Design An outline of the method for calculating heat dissipation is shown below. (1)Obtain the value of PH that corresponds to the motor coil current IO from Fig. 7 "Heat dissipation per phase PH vs. Out- put current IO." Output current IO (A) Motor : 23LM-C004 Holding mode 0 0.2 0.4 0.6 0.8 1.0 1.2 1.0 0.8 0.6 0.4 0.2 0 VCC =44V 36V 24V 15V ∆T j 1 02 3 4 ∆T C Natural cooling Without heatsink 150 100 50 0 Total Power (W) Fig. 7 Heat dissipation per phase PH vs. Output current IO Fig. 8 Temperature rise (2) The power dissipation Pdiss is obtained using the following formula. 2-phase excitation: Pdiss ≅ 2PH+0.015×VS (W) 1-2 phase excitation: Pdiss ≅ PH+0.015 ×VS (W) (3) Obtain the temperature rise that corresponds to the calcu- lated value of Pdiss from Fig. 8 "Temperature rise." 1.2 1 0.8 0.6 0.4 0.2 0 0 0.2 0.4 0.6 0.8 1.0 Output current IO (A) 36V 24V 15V VC C =44V Motor : 23LM-C202 Holding mode ∆T j 1 02 3 4 5 ∆T C Natural cooling Without heatsink 150 100 50 0 Total Power (W) SLA7022MU, ASMA7022MU SLA7000M series SLA7029M, SMA7029M SMA7000M series 3 2 |
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