DC1414B-B Linear Technology, DC1414B-B Datasheet - Page 19

• Manufacturer Part Number: DC1414B-B
• Description: BOARD EVAL LTM4601AHV
• Manufacturer: Linear Technology
• Series: µModuler

Specifications of DC1414B-B

• Design Resources: LTM4601AHV Spice Model LTM4601AHV Gerber Files DC1414B Design Files DC1414B Schematic
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Power - Output: -
• Voltage - Output: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V
• Current - Output: 12A
• Voltage - Input: 5 ~ 28 V
• Regulator Topology: Buck
• Frequency - Switching: 850kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LTM4601AHV
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

APPLICATIONS INFORMATION
the thermal models and the derating curves. Tables 3 and
4 provide a summary of the equivalent θ
conditions. These equivalent θ
to the measured values, and are improved with air fl ow.
The case temperature is maintained at 100°C or below
for the derating curves. The maximum case temperature
of 100°C is to allow for a rise of about 13°C to 25°C in-
side the μModule regulator with a thermal resistance θ
from junction to case between 6°C/W to 9°C/W. This will
maintain the maximum junction temperature inside the
device below 125°C.
Safety Considerations
The LTM4601AHV modules do not provide isolation
from V
a slow blow fuse with a rating twice the maximum input
current needs to be provided to protect each unit from
catastrophic failure.
Layout Checklist/Example
The high integration of LTM4601AHV makes the PCB
board layout very simple and easy. However, to optimize
IN
to V
OUT
. There is no internal fuse. If required,
JA
parameters are correlated
PGND
V
V
OUT
IN
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C
OUT
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C
IN
JA
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C
for the noted
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OUT
C
Figure 17. Recommended Layout
IN
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JC
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its electrical and thermal performance, some layout con-
siderations are still necessary.
• Use large PCB copper areas for high current path, in-
• Place high frequency ceramic input and output capaci-
• Place a dedicated power ground layer underneath the
• To minimize the via conduction loss and reduce module
• Do not put vias directly on pads unless they are
• Use a separated SGND ground copper area for com-
Figure 17 gives a good example of the recommended
layout.
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cluding V
PCB conduction loss and thermal stress.
tors next to the V
high frequency noise.
unit. Refer frequency synchronization source to power
ground.
thermal stress, use multiple vias for interconnection
between top layer and other power layers.
capped.
ponents connected to signal pins. Connect the SGND
to PGND underneath the unit.
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CONTROL
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4601AHV F17
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IN
, PGND and V
CONTROL
SIGNAL
GND
CONTROL
IN
, PGND and V
OUT
LTM4601AHV
. It helps to minimize the
OUT
pins to minimize
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