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P135 Planar Magnetics For 300W to 1.2kW
Converters
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Application:
Transformers based on our 135 size core are designed
for a wide variety of topologies such as forward, half
and full
bridge, full bridge ZVS, and push-pull. These parts are
used in 300W to 1.2kW off-line power supplies and DC-DC
converters
delivering up to 100 amperes for a single output or 20-40
amperes for multi-output magnetics. Applications vary
from industrial and computer to military and space systems
where
high quality, reliability, repeatability and superior
thermal management are of the utmost importance. Planar
transformers
and inductors based on 135 size packages have small footprints
and low profiles, such as 0.500" to 0.750". Commercial
transformers that require a minimum 8 mm creepage and clearance
distances from primary to both secondary and to core have
0.250" bigger length with the same width compared
to transformers used in military, telecom, and some industrial
applications. Depending on the power rating, 135 parts
can
operate without any air flow for cooling. In this case,
they must be attached to a base plate / heatsink with
controlled temperature. Transformers operating close
to or at a maximum
of specified power limit have to be cooled by a combination
of conduction and air flow. Transformers can be customized,
and multi-winding coupled inductors are available. |
Off-Line P135 Transformer Footprint with
8mm creepage and clearance
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Notes
- Dimensions are in inches
- Drawing not to scale
- Dimension tolerance +/- 2% unless noted
P135 Transformer Footprint with 2mm creepage and clearance
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Notes
- Dimensions are in inches
- Drawing not to scale
- Dimension tolerance +/- 2% unless noted
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