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DRV8461SPWPR 데이터시트(PDF) 33 Page - Texas Instruments

부품명 DRV8461SPWPR
상세설명  DRV8461: 65 V, 3 A Stepper Motor Driver for High Efficiency and Noiseless Operation
PDF  117 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

DRV8461SPWPR 데이터시트(HTML) 33 Page - Texas Instruments

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background image
tBLANK
tOFF
tDRIVE
ITRIP
tBLANK
tDRIVE
tBLANK
tDRIVE
ITRIP
tBLANK
tDRIVE
tOFF
tOFF
tBLANK
tDRIVE
tFAST
tOFF
tBLANK
tDRIVE
tFAST
Figure 7-14. Smart tune Dynamic Decay Mode
Smart tune Dynamic Decay dynamically adjusts the fast decay percentage of the total mixed decay time. This
eliminates the need for motor decay tuning by automatically determining the best mixed decay setting that
results in the lowest ripple and best performance for the motor.
The fast decay percentage is optimized iteratively each PWM cycle. If the motor current overshoots the target
ITRIP level, then the mixed decay mode becomes more aggressive (by increasing fast decay percentage) on the
next cycle to prevent loss of current regulation. If a long drive time must occur to reach the target ITRIP level, the
decay mode becomes less aggressive (by reducing fast decay percentage) on the next cycle to operate with less
ripple. On falling steps, smart tune Dynamic Decay automatically switches to fast decay to reach the next step
quickly.
www.ti.com
DRV8461
SLOSE98 – DECEMBER 2022
Copyright © 2022 Texas Instruments Incorporated
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