Linear DC2033A Demo Manual

Description
The DC2033A demo board features the
wire drop compensator IC. The LT6110 is a precision
high side current sense that monitors load current via a
sense resistor and converts the sense voltage to a sink-
ing or sourcing current. Using the LT6110 sourcing or
sinking current to control a regulator's output voltage can
compensate for the voltage loss due to a cable/wire drop.
The LT6110 includes an internal sense resistor or can be
used with an external sense resistor.
typical Wire Drop compensation connections
Arrow.com.
Downloaded from
LT
®
V V
IN REG
R
FA
REGULATOR
I
IOUT
R
FB
FB
R
G
Figure 1. One Cable/Wire Compensation (One Wire to a Load Sharing the Regulator's Ground)
V V
IN REG
R
FA
REGULATOR
I
IOUT
R
FB
FB
R
G
Figure 2. Two Cable/Wire Compensation (One Wire to a Load and One Ground Return Wire)
DEMO MANUAL DC2033A
6110 cable/ The DC2033A is jumper-configurable for the LT6110 to
use the internal sense resistor, an external 25mΩ sense
resistor, or a 5.4mΩ PCB trace sense resistor. The DC2033A
default configuration is for the LT6110 to use the internal
sense resistor.
Design files for this circuit board are available at
http://www.linear.com/demo
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
I I
LOAD LOAD
R
IN
+
+IN V RS –IN
+ –
LT6110
IOUT
–
IMON V
DC2033 F01
I I
LOAD LOAD
R
IN
+
+IN V RS –IN
+ –
LT6110
IOUT
–
IMON V
DC2033 F02
Cable/Wire
Drop Compensator
R
WIRE
(Ω)
V
LOAD
C
LOAD
LOAD
R
WIRE
(Ω)
+
C
LOAD V
LOAD
LOAD
–
R
WIRE
(Ω)
LT6110
dc2033af
1