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DC2455A-C

Description
DEMO BOARD FOR LTM4650-1
CategoryDevelopment board/suite/development tools   
File Size762KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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DC2455A-C Overview

DEMO BOARD FOR LTM4650-1

DC2455A-C Parametric

Parameter NameAttribute value
The main purposeDC/DC, step down
Output and type1. Non-isolation
Voltage - Output1V
Current - Output200A
Voltage - input4.5 V ~ 15 V
Regulator topologystep down
Frequency - Switch500kHz
Board typecompletely filled
What's includedplate
IC/parts usedLTM4650-1
DEMO MANUAL DC2455A-C
LTM4650EY-1
High Efficiency, PolyPhase 200A Step-Down
Power µModule
®
Regulator
4× LTM4650EY-1, 200A
TRACK pin. The output voltage is tightly regulated between
“V
O+
” and “V
O–
” through remote output voltage sensing
which improves output voltage regulation at heavy loads.
These features and the availability of the LTM4650EY-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 LTM4650-1 data sheet must
be read in conjunction with this demo manual for working
on or modifying the demo circuit DC2455A-C.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2455A-C
L,
LT, LTC, LTM, Linear Technology, the Linear logo, µModule, PolyPhase and TimerBlox are
registered trademarks of Linear Technology Corporation. All other trademarks are the property
of their respective owners.
Description
Demonstration Circuit 2455A-C features PolyPhase
®
design
using the
LTM
®
4650EY-1
(B-grade), the high efficiency,
high density, dual 25A, 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.
DC2455A-C can deliver nominal 200A output current. As
explained in the data sheet, output current de-rating is
necessary for certain V
IN
, V
OUT
, and thermal conditions. The
LTM4650-1 on DC2455A-C always operate 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
Figure 1. 4× LTM4650-1, 200A PolyPhase LTM4650-1/DC2455A-C Demo Board
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