Analog Devices Linear ADI Power DC2861A Demo Manual

DESCRIPTION
Demonstration circuit 2861A features the
high efficiency, 10A step-down power µModule
The input voltage range is from 2.25V to 5.5V. The output
voltage range is 0.5V to V
for certain V , V , frequency and thermal conditions.
IN OUT
The DC2861A offers the SSTT pin allowing the user to
program output tracking, soft-start period and die tem-
perature monitoring.
The MODE/SYNC pin either synchronizes the switch-
ing frequency to an external clock, is a clock output, or
sets the PWM mode. It can be externally synchronized
to a clock from 1MHz to 2.25MHz. The PWM modes of
operation are forced continues mode for low noise or
pulse-skipping (PS) mode for high efficiency at light load.
The LTM4658 defaults to forced continues mode during
synchronization. The LTM4658 operates in pulse-skipping
BOARD PHOTO
Low V , High Efficiency 10A Step‑Down
IN
LTM 4658, a
®
regulator.
®
. Derating may be necessary
IN
DEMO MANUAL DC2861A
DC/DC μModule Regulator
mode when both the FREQ and MODE/SYNC pins are con-
nected to V .
IN
LTM4658 has internal compensation circuit which guar-
antees sufficient stability margins and good transient per-
formance with a wide range of output capacitors, even
with all ceramic output capacitors.
For output loads that demand more than 10A of current,
multiple LTM4658s can be paralleled to run out of phase
to provide more output current without increasing input
and output voltage ripples.
The LTM4658 data sheet must be read in conjunction with
this demo manual prior to working on or modifying demo
circuit DC2861A.
Design files for this circuit board are
All registered trademarks and trademarks are the property of their respective owners.
LTM4658
available.
Rev. 0
1