Vishay’s PLA51 Planar Transformers Pack More Efficiency Into Smaller Size

By WPG AmericasJune 13, 2016

Offering power from 1 kW to 3 kW in a compact 70 mm by 53 mm by 22 mm size, Vishay’s PLA51 planar transformers are optimized for DC/DC power converters, power control cooling units, UPS, on-board chargers for electric vehicles and solar inverters.

In these applications, the PLA51’s high typical efficiency of > 99 % reduces losses, while its low profile of 22 mm saves space in design frameworks that need sub-assemblies. Additionally, PLA51’s reduced weight of 170 g is a key parameter that makes it an ultimate choice for power supplies in avionics applications.

Extending exceptional repeatability, the PLA51 characteristically delivers a frequency range of 50 kHz to 400 kHz and operates over a temperature range from -55 °C to +125 °C with heatsink dissipation. Announced performance is attained using a liquid cooling system.

Key Features and Product Benefits of Vishay’s PLA51 planar transformers

As compared to other devices built on traditional winding technology, Vishay’s PLA51 delivers the same power transfer and conversion while maintaining higher efficiency and a lower profile. Significant product benefits of the PLA51 planar transformers include:

  • Compact low profile design of 70 mm by 53 mm by 22 mm size
  • High typical efficiency of > 99 %
  • Reduced weight of 170 g
  • High-temperature operation to +125 °C with heatsink dissipation
  • Easy-assembly system for cold plates
  • Material temperature grade: 180 °C
  • Internal-threaded output terminals
  • Tapped outputs offer fast and easy connection.
  • Offered in full-bridge, half-bridge, and forward power supply topologies
  • RoHS-compliant
  • Custom design available

Applications and Market Segments of Vishay’s PLA51 planar transformers

Vishay products are tested and trusted worldwide. Noted for flexibility, its designs are implemented every day, in leading industries. PLA51, from Vishay, is deployed in a broad variety of complex applications spanning across the entire industrial spectrum. Significant application of the PLA51 planar transformers include:

  • DC/DC power converters
  • Electric vehicles (EV) and hybrid-electric vehicles (HEV)
  • On-board chargers for forklifts and electric-powered vehicles
  • Power-control cooling units
  • Solar inverters
  • UPS and power supplies

Quick Reference Data of Vishay’s PLA51 planar transformers  

Type Transformer
Size (L x W x H) 70 mm x 53 mm x 22 mm
Terminals Tapped outputs or wires
Power 1000 W to 3000 W
Frequency range 50 kHz to 400 kHz

Safety Measures and Availability Information of the PLA51 planar transformers

Vishay assures quality and safety of its products. Being socially responsible, the company constantly upgrades itself on issues like health and safety, resource use reduction, recycling, waste reduction, and the avoidance of non-compliance incidents.

The Company maintains ISO 14001 certifications and most of its facilities around the world are OSHAS 18000 certified. Vishay guarantees that all its products are identified as Halogen-Free, following the Halogen-Free standard requirements as specified in the JEDEC JS709A. The products are also RoHS-compliant and conforms to JEDEC JS709A.

Going off the shelf in full-bridge, half-bridge, and forward power supply topologies, Vishay’s PLA51 planar transformers will be available in custom designs upon request. A detailed illustration in regards to the production quantities will be available in Q4 2016 with lead times of 12 weeks approximately for large order quantities.

For more information on this product, contact the WPGA team.