Linear Technology DC2603A-A Demo Manual

DESCRIPTION
Demonstration circuit 2603A-A features the
®
LTM 4650AEY-1, the high efficiency, high density, dual
25A, single 50A switch mode step-down power mod-
ule regulator. The input voltage is from 4.5V to 16V.
The output voltage is programmable from 0.6V to 5.5V.
DC2603A-A can deliver 25A maximum current from each
channel. The board designs with minimum components to
demonstrate this high efficiency, high density µModule
As explained in the data sheet, output current derating is
necessary for certain V
IN
The board operates in continuous conduction mode in
heavy load conditions. For high efficiency at low load
currents, the MODE jumper (JP1) selects pulse-skipping
mode for noise sensitive applications or Burst Mode
operation in less noise sensitive applications. Two out-
puts can be connected in parallel for a single 50A out-
BOARD PHOTO
, V , and thermal conditions.
OUT
Figure 1. LTM4650A/DC2603A-A Demo Board
DEMO MANUAL DC2603A-A
Dual 25A or Single 50A
DC/DC μModule Regulator
put solution with optional jumper resistors. The board
allows the user to program how its output ramps up and
down through the TRACK/SS pin. The output can be set
up to either coincidentally or ratiometrically track with
another supply's output. Remote output voltage sens-
ing is available for improved output voltage regulation at
the load point. These features and the availability of the
®
. LTM4650AEY in a compact 16mm × 16mm × 5.01mm
BGA package make it ideal for use in many high-density
point-of-load applications. The
must be read in conjunction with this demo manual for
working on or modifying the demo circuit DC2603A-A.
Design files for this circuit board are available at
®
http://www.linear.com/demo/DC2603A-A
L, LT, LTC, LTM, BUrst Mode, µModule, Linear Technology and the Linear logo are registered
trademarks of Analog Devices, Inc. All other trademarks are the property of their respective
owners.
LTM4650AEY
LTM4650A data sheet
dc2603aaf
1