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HPQ-3.3/50-D48 Series
Isolated High Power Quarter Brick DC-DC Converters
+VIN
+VOUT
+SENSE
+VIN
+VOUT
+SENSE
ON/OFF
CONTROL
TRIM
R TRIM UP
LOAD
ON/OFF
CONTROL
TRIM
R TRIM DOWN
LOAD
–SENSE
–SENSE
–VIN
–VOUT
–VIN
–VOUT
Figure 5. Trim Connections To Increase Output Voltages Using Fixed Resistors
Trim Up
Figure 6. Trim Connections To Decrease Output Voltages Using Fixed Resistors
Trim Down
HPQ-3.3/50-D48
R T UP (k ) =
16.863(1+ ? )
1.225x ?
–
5.11
?
– 10.22
R T DOWN (k ) =
5.11
?
– 10.22
( )
where ? is the absolute value of
3.3 - V OUT
3.3
( ? is always positive)
Soldering Guidelines
Murata Power Solutions recommends the speci?cations below when installing these converters. These speci?cations vary depending on the solder type. Exceeding these speci?ca-
tions may cause damage to the product. Your production environment may differ; therefore please thoroughly review these guidelines with your process engineers.
Wave Solder Operations for through-hole mounted products (THMT)
For Sn/Ag/Cu based solders:
For Sn/Pb based solders:
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
115° C.
270° C.
7 seconds
Maximum Preheat Temperature
Maximum Pot Temperature
Maximum Solder Dwell Time
105° C.
250° C.
6 seconds
NOTICE—Please use only this customer data sheet as product documentation
when laying out your printed circuit boards and applying this product into your
application. Do NOT use other materials as of?cial documentation such as adver-
tisements, product announcements, or website graphics.
We strive to have all technical data in this customer data sheet highly accurate
and complete. This customer data sheet is revision-controlled and dated. The
latest customer data sheet revision is normally on our website (www.murata-
ps.com) for products which are fully released to Manufacturing. Please be
especially careful using any data sheets labeled “Preliminary” since data may
change without notice.
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mans?eld, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
The pinout (Pxx) and case (Cxx) designations (typically P65 or C59) refer to
a generic family of closely related information. It may not be a single pinout
or unique case outline. Please be aware of small details (such as Sense pins,
Power Good pins, etc.) or slightly different dimensions (baseplates, heat
sinks, etc.) which may affect your application and PC board layouts. Study the
Mechanical Outline drawings, Input/Output Connection table and all footnotes
very carefully. Please contact Murata Power Solutions if you have any ques-
tions.
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy :
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Speci?cations are subject to change without
notice.
? 2013 Murata Power Solutions, Inc.
www.murata-ps.com/support
MDC_HPQ-3.3/50-D48 Series.B01 Page 11 of 11
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