Datasheet

1
2
3
Drive Current
Slow decay with synchronous rectification (brake) Low Side
Fast decay with synchronous rectification (reverse)
VBB
4
1
2
3
4 Slow decay with synchronous rectification (brake) High Side
DRV8800
DRV8801
www.ti.com SLVS855G –JULY 2008–REVISED OCTOBER 2013
DRV8801
Figure 7. Current Path
Fast Decay With Synchronous Rectification
This decay mode is equivalent to a phase change where the opposite drivers are switched on. When in fast
decay, the motor current is not allowed to go negative (direction change). Instead, as the current approaches
zero, the drivers turn off. The power calculation is the same as the drive current calculation (see Equation 1).
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