DRV3204-Q1 Datasheet, PDF (18/38 Pages) Texas Instruments – DRV3204-Q1 Three-Phase Brushless Motor Driver

Not Recommended for New Designs
DRV3204-Q1
SLVSBT3C – MARCH 2013 – REVISED JULY 2016
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Feature Description (continued)
7.2.5 Phase Comparator
The three-channel comparator module monitors the external FETs by detecting the drain-source voltage across
the high-side and low-side FETs. PHTM is the threshold level of the comparators usable for sensorless
communication. Figure 12 shows an example of the threshold level.
UHS,
VHS,
WHS
PH1M
VB
PH2M
VCC
PH3M
PHTM
+
Clamp
-
PMV1
PMV2
PMV3
Clamp
Figure 12. Phase Comparator Block Diagram
18
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