DRV8461SPWPR datasheet(63/117 Pages) TI

номер детали	DRV8461SPWPR

подробное описание детали	DRV8461: 65 V, 3 A Stepper Motor Driver for High Efficiency and Noiseless Operation

PDF	117 Pages

Scroll/Zoom	100%

производитель	TI [Texas Instruments]

домашняя страница	http://www.ti.com

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63 / 117 page

Figure 7-44 and Figure 7-45 show open-load detection in cases where coil A and coil B were opened

respectively. The open load detection time was selected to be 60 ms maximum, and the OL_MODE bit was

0b.

Traces from top to bottom: AOUT2, coil A current, coil B current, nFAULT

Figure 7-44. Coil A open-load detection

Traces from top to bottom: AOUT2, coil A current, coil B current, nFAULT

Figure 7-45. Coil B open-load detection

Note

• In silent step decay mode, open-load fault detection works only if the motor is in motion. If the

motor is in standstill, open-load detection is not supported.

• When open-load fault is detected -

– If ENABLE pin is changed from logic HIGH to Hi-Z on-the-fly, apply a nSLEEP reset pulse once

the open-load condition is removed.

– If OL_MODE is changed from 1b to 0b or EN_OL is changed from 1b to 0b, apply a clear faults

command once the open-load condition is removed.

• When the device is operating with auto-torque enabled, if open-load fault is detected, the coil

current goes to a value corresponding to TRQ_DAC.

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DRV8461

SLOSE98 – DECEMBER 2022

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DRV8461SPWPR датащи(PDF) 63 Page - Texas Instruments