Linear Technology DC2007A-C Manual

DESCRIPTION
Demonstration circuit 2007A-C features a PolyPhase
design using the LTM
®
high density, dual 18A, switch mode step-down power
µModule regulator. The input voltage is from 4.5V to
®
15V. The output voltage is jumper selectable from 0.9V to
1.8V. The DC2007A-C can deliver a nominal 140A output
current. As explained in the data sheet, output current
derating is necessary for certain V
conditions. The LTM4630 on the DC2007A-C always
operates in continuous conduction mode. The switching
frequency can be programmed through a resistor or can
be synchronized to an external clock signal. The board
allows the user to program how its output voltage ramps
4630EV, the high efficiency,
, V , and thermal
IN OUT
Figure 1. 70A PolyPhase LTM4630/DC2007A-C Demo Board
DEMO MANUAL DC2007A-C
High Efficiency, PolyPhase
140A Step-Down Power
µModule Regulator
up and down through the 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 regulation applications.
The LTM4630 data sheet must be read in conjunction with
this demo manual for working on or modifying the demo
circuit DC2007A-C.
Design files for this circuit board are available at
http://www.linear.com/demo
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.
LTM4630EV
dc2007a_cf
1