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DRV8461SPWPR Datasheet(PDF) 33 Page - Texas Instruments |
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DRV8461SPWPR Datasheet(HTML) 33 Page - Texas Instruments |
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33 / 117 page  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 Submit Document Feedback 33 Product Folder Links: DRV8461 |
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