INA282, INA283
INA284, INA285
INA286
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SBOS485A –NOVEMBER 2009–REVISED JULY 2010
Motor
Supply
(< 80V)
+2.7V to
+18V
VIN-
VIN+
Q1
D1
D2
MOSFET
Drive
Circuits
VREF
Output
Q2
+2.7V to
+18V
VIN-
VIN+
NOTE: By sensing totem-pole current on both the positive and negative rail and summing, dynamic common-mode issues
can be avoided entirely. Note that IC2 is connected with inverting inputs because it should report current with an
opposite polarity to that of IC1.
Figure 43. Sensing and Summing Totem Pole Current
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