Linear ANALOG DEVICES DC2448A-B Demo Manual

Description
Demonstration circuit DC2448A-B features a PolyPhase
design using the LTM 4636EY, a 40A high efficiency,
®
switch mode step-down power µModule
input voltage range is from 4.7V to 15V. When V
short PVCC to VIN with R1 = 0Ω, and set R3 = 0Ω and
remove R2. The output voltage range is 0.6V to 3.3V. The
DC2448A-B can deliver a nominal 120A output current. As
explained in the data sheet, output current derating is nec-
essary for certain V , V
IN OUT
board operates in continuous conduction mode in heavy
load conditions. For high efficiency at low load currents,
the MODE_PLLIN jumper selects pulse-skipping mode
for noise sensitive applications or Burst Mode
BoarD photo
High Efficiency, PolyPhase 120A
Step-Down Power µModule Regulator
regulator. The
®
< 5.5V,
IN
, and thermal conditions. The
operation
®
in less noise sensitive applications. The MODE_PLLIN
®
pin also allows the LTM4636 to synchronize to an exter-
nal clock signal. The phases of the three LTM4636s are
0 degrees, 120 degrees and 240 degrees. DC2448A-B has
the option of choosing both internal and external com-
pensation circuit for LTM4636. The LTM4636 data sheet
must be read in conjunction with this demo manual prior
to working on or modifying demo circuit DC2448A-B.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2448A-B
L, LT, LTC, LTM, Linear Technology, Burst Mode, µModule, PolyPhase and the Linear logo
are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their
respective owners.
DEMO MANUAL
DC2448A-B
LTM4636
dc2448abf
1