Linear ANALOG DEVICES DC2448A-C Demo Manual

Description
Demonstration circuit DC2448A-C 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-C can deliver a nominal 160A output
current. As explained in the data sheet, output current
derating is necessary for certain V
conditions. The board operates in continuous conduc-
tion 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
BoarD photo
High Efficiency, PolyPhase 160A
Step-Down Power µModule Regulator
®
regulator. The
®
< 5.5V,
IN
, V and thermal
IN OUT
DEMO MANUAL
Burst Mode operation in less noise sensitive applica-
®
tions. The MODE_PLLIN pin also allows the LTM4636 to
synchronize to an external clock signal. The phases of the
four LTM4636s are 0 degree, 90 degree, 180 degree and
270 degree. DC2448A-C has the option of choosing both
internal and external compensation circuit for LTM4636.
The LTM4636 datasheet must be read in conjunction with
this demo manual prior to working on or modifying demo
circuit DC2448A-C.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2448A-C
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.
DC2448A-C
LTM4636
dc2448acf
1