Linear Technology DC1477A Manual

DESCRIPTION
Demonstration circuit DC1477A features the LTM
a high voltage, high efficiency, high density switch mode
buck-boost power module. The LTM4609EV regulates an
output voltage above, below or equal to the input voltage.
DC1477A accepts an input voltage from 10V to 36V with
a preset output voltage of 30V at up to 3A. Derating may
be necessary for certain V
An input π filter option is included on the DC1477A to
minimize the input ripple. The switching frequency may
be synchronized to an external clock from 200kHz to
PERFORMANCE SUMMARY
PARAMETER
Minimum Input Voltage
Output Voltage V
OUT
Maximum Continuous Output Current
Default Operating Frequency
Efficiency
BOARD PHOTO
Downloaded from Elcodis.com electronic components distributor
4609EV,
®
, V and thermal conditions.
IN OUT
(T = 25°C)
A
CONDITION
Derating is Necessary for certain V
Thermal Conditions
V = 20V, V
IN OUT
DEMO MANUAL DC1477A
36V , 34V
IN
DC/DC µModule
400kHz to reduce undesirable frequency harmonics and/
or parallel multiple modules for even higher output cur-
rent. The LTM4609 data sheet must be read in conjunction
with this demo manual prior to working on or modifying
demo circuit DC1477A
Design files for this circuit board are available at
http://www.linear.com/demo
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.
, V and
IN OUT
= 30V, I = 3A
OUT
LTM4609EV:
Buck-Boost
OUT
Regulator
®
VALUE
10V to 36V
30V ±2%
3A DC at 10V
IN
8A DC at 24V
IN
10A DC at V > 30V
IN
300kHz
96.7%, See Figure 3 for More Information
dc1477af
1