DRV8411 datasheet(23/53 Pages) TI

Part #	DRV8411

Description	DRV8411A Dual H-Bridge Motor Driver with Current Regulation

PDF	53 Pages

Scroll/Zoom	100%

Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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23 / 53 page

10.1.1.1.2.3.2 Half-Stepping Operation with Fast Decay

In half-stepping mode, the full-bridge operates in one of the three modes (forward, reverse, or coast mode)

to position the rotor half-way between two full-step positions. The coast state allows the current in the motor

winding to decay quickly to 0 A. This mode is best-used when half-stepping at high speeds.

The controller applies the PWM input to the AIN1, AIN2, BIN1, and BIN2 pins as shown in Figure 10-3, and the

driver operates in forward, reverse, and coast mode.

Phase

AIN1

AIN2

BIN1

BIN2

AOUT12 FRW

AOUT12 REV

BOUT12 FRW

BOUT12 REV

AOUT12

BOUT12

Time

Figure 10-3. Timing Diagram for Half-Stepping with Fast Decay

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DRV8411A

SLVSGI9A – OCTOBER 2022 – REVISED JULY 2023

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DRV8411 Datasheet(PDF) 23 Page - Texas Instruments