SMM153
APPLICATIONS INFORMATION (CONTINUED)
CS+, CS-
Select a resistor value that will drop no more than
100mV (full scale) when full load is drawn by the
converter or circuit being sensed by the resistor R
S
(Figure 1). To obtain highest accuracy current-
sensing, provide a Kelvin connection from the resistor
to the CS+ and CS- pins. Do not allow the main
current path circuit traces to inadvertently become a
part of the current sense resistor. Kelvin connect
directly at the resistor and follow the manufacturer’s
instructions for exact positioning of the traces for
Kelvin sensing.
Summit Microelectronics, Inc
2134 3.0 1/20/2010
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