Linear Technology DC1385A Demo Manual

DESCRIPTION
Demonstration circuit DC1385A features the LTM
the high efficiency, high density power module with dual 4A
switch mode outputs. Derating is necessary for certain V
V , and thermal conditions. In the default configuration,
OUT
the two outputs share the same input supply, however each
regulator may have its own input supply simply by remov-
ing a resistor. By enabling the tracking feature, the outputs
PERFORMANCE SUMMARY
PARAMETER
Input Voltage Range
Output Voltage V , V
OUT1 OUT2
Maximum Continuous Output Current
Default Operating Frequency
Efficiency of Channel 1
Efficiency of Channel 2
BOARD PHOTO
DEMO MANUAL DC1385A
Step-Down µModule
® 4614EV, coincidentally follow another supply rail. The LTM4614 data
sheet must be read in conjunction with this demo board
, prior to working on or modifying demo circuit DC1477A.
IN
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.
(T = 25°C)
A
CONDITIONS
V and V
IN1 IN2
V = 5V ,
IN DC
I , I = 4A.
OUT1 OUT2
Derating is Necessary for Certain V
Conditions, See Data Sheet for Details
V = 5V, V = 1.8V, I = 4A
IN1 OUT1 OUT1
V = 5V, V = 1.2V, I = 4A
IN2 OUT2 OUT2
LTM4614EV: Dual 4A
VALUE
2.375V to 5.5V
V
OUT1
V
OUT2
, V , and Thermal 4A
IN OUT DC
1.25MHz
81.5%, See Figure 3
75.4%, See Figure 3
®
Regulator
= 1.8V ±2%,
= 1.2V ±2%
for V , V
OUT1 OUT2
dc1385af
1