DRV8461SPWPR datasheet(33/117 Pages) TI

Il numero della parte	DRV8461SPWPR

Spiegazioni elettronici	DRV8461: 65 V, 3 A Stepper Motor Driver for High Efficiency and Noiseless Operation

PDF	117 Pages

Scroll/Zoom	100%

Produttore elettronici	TI [Texas Instruments]

Homepage	http://www.ti.com

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33 / 117 page

tBLANK

tOFF

tDRIVE

ITRIP

tBLANK

tDRIVE

tBLANK

tDRIVE

ITRIP

tBLANK

tDRIVE

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.

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DRV8461

SLOSE98 – DECEMBER 2022

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DRV8461SPWPR Scheda tecnica(PDF) 33 Page - Texas Instruments