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dc1601bf
DEMO MANUAL DC1601B
DESCRIPTION
LTM4607EV
High Efficiency PolyPhase
Buck-Boost Power Supply
Demonstration circuit DC1601B is a PolyPhase
®
power
supply featuring the LTM
®
4607 power module, a complete
high efficiency switching mode buck-boost power supply.
The DC1601B input voltage range is from 6V to 36V and
is capable of delivering high power through paralleled
LTM4607 modules. The demo circuit can deliver up to 10A
of output current for two paralleled modules (DC1601B-A),
15A for three paralleled modules (DC1601B-B) and up
to 20A for four paralleled modules (DC1601B-C). The
DC1601B demonstrates that paralleling modules is easy
and reliable.
The output voltage for the board is 12V. The rated load
current per module is 5A in boost mode, however cur-
rent derating may be necessary under certain V
IN
, V
OUT
,
frequency, and thermal conditions. An onboard external
clock is provided for synchronization and interleaving of
L
, LT, LTC, LTM, Linear Technology, PolyPhase and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
phases to minimize input and output ripple. An internal
phase-locked loop allows the LTM4607 to be synchro-
nized to an external clock within the range of 200kHz to
400kHz. The LTM4607 default switching frequency on the
DC1601B is set to 300kHz through the onboard LTC6902
clock generator which interleaves the paralleled phases.
The frequency and phase separation set by the LTC6902
are resistor programmable.
These features, including the availability of the LTM4607 in
a compact thermally enhanced 15mm × 15mm × 2.8mm
LGA package make the demonstration circuit ideal for
use in high density point of load regulation applications.
Design files for this circuit board are available at
http://www.linear.com/demo
BOARD PHOTO
DC1601B-C
SHOWN
