Linear ANALOG DEVICES DC2448A-D Demo Manual

PolyPhase 160A Step-Down Power µModule Regulator
with Overvoltage and Overtemperature Protection
Description
Demonstration circuit DC2448A-D features a PolyPhase
design using the LTM 4636-1EY, a 40A high efficiency,
®
switch mode step-down power µModule
overvoltage and overtemperature protection features. The
input voltage range is from 9V to 15V. The output volt-
age range is 0.6V to 3.3V. The DC2448A-D can deliver a
nominal 160A output current. DC2448A-D has on-board
hot swap circuit that can disconnect input supply and
protect the LTM4636-1 and the load under overvoltage
and overtemperature conditions. As explained in the data
sheet, output current derating is necessary for certain
V , V and thermal conditions. The board operates in
IN OUT
continuous conduction mode in heavy load conditions.
BoarD photo
For high efficiency at low load currents, the MODE_PLLIN
®
jumper selects pulse-skipping mode for noise sensitive
regulator with applications or Burst Mode
®
tive applications. The MODE_PLLIN pin also allows the
LTM4636-1 to synchronize to an external clock signal.
DC2448A-D has the option of choosing both internal
and external compensation circuits for LTM4636-1. The
LTM4636-1 data sheet must be read in conjunction with
this demo manual prior to working on or modifying demo
circuit DC2448A-D.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2448A-D
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-D
LTM4636-1
operation in less noise sensi-
®
dc2448adf
1