1
dc2328af
DEMO MANUAL DC2328A
Description
LTM4651
EN55022B Compliant 58V, 24W
Inverting-Output DC/DC µModule Regulator
Demonstration circuit 2328A is an inverting buck-boost
converter with 12V to 34V input voltage, –24V output volt-
age and max 2A output current capability, which features
the LTM
®
4651Y. The
24W inverting-topology DC/DC µModule regulator. It is
designed to meet the radiated emissions requirement of
EN55022B. A switching frequency range of 250kHz to
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog
Devices, Inc. All other trademarks are the property of their respective owners.
performance summary
BoarD photo
3MHz is supported and the module can synchronize to
an external clock. The LTM4651 data sheet must be read
in conjunction with this demo manual prior to working on
or modifying demo circuit DC2328A.
Design files for this circuit board are available at
http://www.linear.com/demo/DC2328A
Specifications are at T
A
= 25°C
DC2328A Top View
PARAMETER
CONDITIONS
VALUE
Input Voltage Range
12V to 34V
Output Voltage, V
OUT
12V
IN
, 0A to 1A; 24V
IN
, 0A to 2A; 34V
IN
, 0A to 2A
–24V ±2%
Maximum Output Current, I
OUT
Derating for Certain V
IN
and Thermal Conditions
2A
Default Operating Frequency
1.2MHz
Efficiency
24V
IN
, –24V
OUT
, 2A
87.5%
