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dc2448aaf
DEMO MANUAL
DC2448A-A
Description
LTM4636
High Efficiency, PolyPhase 80A
Step-Down Power µModule Regulator
Demonstration circuit DC2448A-A features a PolyPhase
®
design using the
, a 40A high efficiency,
switch mode step-down power µModule
®
regulator. The
input voltage range is from 4.7V to 15V. When V
IN
< 5.5V,
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-A can deliver a nominal 80A output current. As
explained in the data sheet, output current derating is nec-
essary for certain V
IN
, V
OUT
, and thermal conditions. The
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
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.
BoarD photo
noise sensitive applications or Burst Mode
®
operation in
less noise sensitive applications. The MODE_PLLIN pin
also allows the LTM4636 to synchronize to an external
clock signal. The phase shift between the two phases is
180 degree. DC2448A-A has the option of choosing both
internal and external compensation 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-A.
Design files for this circuit board are available at
