PLA51
www.vishay.com
Vishay Sfernice
Medium Power Planar Transformer 1 kW to 3 kW
FEATURES
• For high power
application
density
DC/DC
converter
• Very low profile and weight
• High efficiency: > 99 %
• Recommended frequency range (50 kHz; 400 kHz)
• Operating temperature range: -55 °C; 125 °C with heat
sink dissipation
• Easy-assembly system for cold plates
In addition to this standard design of PLA51 many
custom designs can be offered upon request
• Tapped output terminals
• Material temperature grade: 180 °C
• Excellent repeatability
• Material categorization: for definitions of compliance
please see
www.vishay.com/doc?99912
DESIGN SUPPORT TOOLS
Models
Available
click logo to get started
QUICK REFERENCE DATA
Type
Size (L x W x H)
Terminals
Power
Frequency range
Inductance range
Transformer
70 mm x 53 mm x 22 mm
Tapped outputs or wires
1000 W to 3000 W
50 kHz to 400 kHz
96 μH to 160 μH
EXAMPLE OF TRANSFORMER APPLICATION: 2 kW DC/DC CONVERTER, PLA51LA32
POWER SUPPLY
TOPOLOGY
Full bridge with
current doubler
FREQUENCY
POWER
INPUT
VOLTAGE
50 V
DC
to 110 V
DC
OUTPUT
VOLTAGE
30 V
OUTPUT
CURRENT
67 A
DUTY CYCLE
MAX.
0.98
100 kHz
2 kW
STANDARD ELECTRICAL CHARACTERISTICS
INDUCTANCE
(10 kHz; 0.1 V)
LEAKAGE
INDUCTANCE
(10 kHz; 0.1 V)
< 150 nH (typical)
TURN
RATIO
POWER
LOSSES
EFFICIENCY
HIPOT:
PRIMARY / SECONDARY
+ CORE
1500 V
AC
< 150 μA
HIPOT:
SECONDARY / CORE
128 μH ± 25 %
3:2
< 17 W
> 99 %
< 150 μA
Revision: 17-Nov-17
Document Number: 59059
1
For technical questions, contact:
sferaztronics@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
PLA51
www.vishay.com
RECOMMENDATIONS FOR MOUNTING
Announced performances are achieved using a liquid cooling system. The internal temperature must be maintained below
160 °C. The user shall correctly size its own heatsink according to real working conditions of his device.
Vishay Sfernice
PACKAGING
Individual box.
ELECTRICAL SCHEMES
DIMENSIONS
in millimeters (± 0.5)
22 max.
53 max.
25.8
11.6 ± 1.1
3
1
3
4
8.4 ± 0.7
PLA51LA32
70 max. 58
AZ YY-WW
x 4 M4
threaded
nuts
2
4
2
35.2
General
tolerance: ± 0.5 mm
1
6.8 ± 0.6
13.2 ± 1.1
Notes
• Weight
170 g
• Take care of ferrite core while handling (no shock admitted)
• Terminal fixing: with M4 screw, max. tightening: 1.2 Nm
SAP PART NUMBERING
MODEL
PLA
SIZE
51
STYLE
L
= leadframe with nuts
W
= wires
FOOTPRINT
A
= as shown
in above
drawings
(other upon request))
RATIO
21
= 2 : 1
31
= 3 : 1
32
= 3 : 2
SR
= special ratio
SPECIAL
XXXXX
=
special code
(6 digits)
Revision: 17-Nov-17
Document Number: 59059
2
For technical questions, contact:
sferaztronics@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT
www.vishay.com/doc?91000
Legal Disclaimer Notice
www.vishay.com
Vishay
Disclaimer
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE
RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,
“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other
disclosure relating to any product.
Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or
the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all
liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,
consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular
purpose, non-infringement and merchantability.
Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of
typical requirements that are often placed on Vishay products in generic applications. Such statements are not binding
statements about the suitability of products for a particular application. It is the customer’s responsibility to validate that a
particular product with the properties described in the product specification is suitable for use in a particular application.
Parameters provided in datasheets and / or specifications may vary in different applications and performance may vary over
time. All operating parameters, including typical parameters, must be validated for each customer application by the customer’s
technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,
including but not limited to the warranty expressed therein.
Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining
applications or for any other application in which the failure of the Vishay product could result in personal injury or death.
Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk.
Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for
such applications.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document
or by any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.
© 2017 VISHAY INTERTECHNOLOGY, INC. ALL RIGHTS RESERVED
Revision: 08-Feb-17
1
Document Number: 91000
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