LMD18245_06 Datasheet, PDF (14/21 Pages) National Semiconductor (TI) – 3A, 55V DMOS Full-Bridge Motor Driver

The Typical Application (Continued)
wave drive. The motor takes one full step at each change of
direction of either winding current. Figure 9 shows the wind-
ing currents and digital control signals for this application of
the typical application circuit, and Figure 10 shows, for a
single phase, the winding current and voltage at the output of
the associated current sense amplifier.
Top Trace: Phase A Winding Current at 1A/div
Bottom Trace: Phase B Winding Current at 1A/div
Horizontal: 1 ms/div
*500 steps/second
01187817
BRAKE A = BRAKE B = 0
01187841
FIGURE 8. Winding Currents and Digital Control Signals for One-Phase-On Drive (Wave Drive)
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