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dc2164aafa
DEMO MANUAL DC2164A-A
Description
LTM4630EY-1
High Efficiency, PolyPhase 70A
Step-Down Power µModule™ Regulator
Demonstration Circuit 2164A-A features a PolyPhase
®
design using the
LTM
®
4630EY-1
(A-grade), the high ef-
ficiency, high density, dual 18A, switch mode step-down
power module regulator. The input voltage is from 4.5V
to 15V. The output voltage is jumper selectable from
0.9V to 1.8V. DC2164A-A can deliver nominal 70A output
current. As explained in the data sheet, output current
derating is necessary for certain V
IN
, V
OUT
, and thermal
conditions. The LTM4630-1A on DC2164A-A always
operate 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
up and down through the TRACK pin. The output voltage
L
, LT, LTC, LTM, Linear Technology, the Linear logo, µModule and PolyPhase are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
is tightly regulated between V
O
+
and V
O
–
through remote
output voltage sensing which improves output voltage
regulation at heavy loads. The LTM4630-1A has ±0.8%
total DC errors. These features and the availability of the
LTM4630EY-1 in a compact 16mm × 16mm × 5.01mm
BGA package make it ideal for use in many high-density
point-of-load regulation applications. The LTM4630-1 data
sheet must be read in conjunction with this demo manual
for working on or modifying the demo circuit DC2164A-A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2164A-A
Figure 1. 70A PolyPhase LTM4630-1/DC2164A-A Demo Board
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