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dc1198abf
DEMO MANUAL DC1198A-B
DESCRIPTION
LTM4607EV: High Density
Buck-Boost Power Module
Demonstration circuit DC1198A-B features the
LTM
®
4607EV, a high efficiency, high density switch mode
buck-boost power module. The LTM4607EV can regulate
its output voltage from input voltage both above and below
the output. The board accepts an input voltage from 6V
to 36V and is set for an output voltage of 12V. The rated
load current is 5A in boost mode and 12A in step-down
operation. Derating is necessary for certain V
IN
, V
OUT
and thermal conditions. The switching frequency can be
synchronized to external clock operating from 200kHz to
L
, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.
PARAMETER
CONDITION
VALUE
Input Voltage Range
6V to 36V
Output Voltage V
OUT
DC Voltage, V
IN
= 12V, I
OUT
= 5A
12V, ±2%
Maximum Continuous Output Current
Step-Up
Step-Down
Derating Is Necessary for Certain V
IN
, V
OUT
and Thermal Conditions
5A
DC
(6V
IN
)
12A
DC
(V
IN
> 12V)
Default Operating Frequency
300kHz
Efficiency
V
IN
= 12V, V
OUT
= 12V, I
OUT
= 5A
97.4%, See Figure 3 for More
Information
BOARD PHOTO
PERFORMANCE SUMMARY
400kHz. This clock input can be used to reduce undesir-
able frequency harmonics and reduce input and output
ripple when paralleling LTM4607 modules for even higher
output current. The LTM4607 data sheet must be read
in conjunction with this demo manual for working on or
modifying the demo circuit DC1198A-B.
Design files for this circuit board are available at
http://www.linear.com/demo
Specifications are at T
A
= 25°C