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dc2007a_bf
DEMO MANUAL DC2007A-B
DESCRIPTION
LTM4630EV
High Efficiency, PolyPhase
105A Step-Down Power
µModule Regulator
Demonstration circuit 2007A-B features a PolyPhase
®
design using the
, the high efficiency, high
density, dual 18A, switch mode step-down power µModule
®
regulator. The input voltage is from 4.5V to 15V. The out-
put voltage is jumper selectable from 0.9V to 1.8V. The
DC2007A-B can deliver a nominal 105A output current.
As explained in the data sheet, output current derating is
necessary for certain V
IN
, V
OUT
, and thermal conditions. The
LTM4630 on DC2007A-B always operates in continuous
conduction mode. The switching frequency can be pro-
grammed through a resistor or can be synchronized to an
external clock signal. The board allows the user to program
how its output voltage ramps up and down through the
L
, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and µModule are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
TRACK pin. The output voltage is tightly regulated between
“VO+” and “VO-” through remote output voltage sensing
which improves output voltage regulation at heavy loads.
These features and the availability of the LTM4630EV in a
compact 16mm
×
16mm
×
4.41mm LGA package make
it ideal for use in many high density point-of-load regula-
tion applications. The LTM4630 data sheet must be read
in conjunction with this demo manual for working on or
modifying the demo circuit DC2007A-B.
Design files for this circuit board are available at
Figure 1. 70A PolyPhase LTM4630/DC2007A-B Demo Board