TDK Lambda Americas Inc
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Power Supply Products

Compact, Conduction Cooled 504W Rated AC-DC Power Modules Offer PMBus™ Communication

San Diego, CA – January 2019 –

TDK Corporation (TSE 6762) announces the introduction of the conduction cooled TDK-Lambda PFH500F-28 AC-DC power modules.  The power supplies are rated at 28V 504W, feature a compact 4” x 2.4” footprint and have optional Read/Write programming and communication through a PMBus™ interface.  These third generation power supplies are ideal for a variety of applications including COTS (Commercial-Off-The-Shelf), power amplifiers, LED displays and test equipment.

The PFH500F-28 series utilizes GaN semiconductors, bridgeless power factor correction, synchronous rectification and digital control, enabling efficiencies of up to 92%. Opto-couplers have been replaced by digital isolators for long term reliability and stability.

Accepting an 85 to 265VAC input, the modules deliver 28V at 18A and can be adjusted from 22.4 to 33.6V using the trim pin or PMBus interface.  Baseplate cooling allows operation at temperatures ranging from -40 to +100°C.  The metal enclosure measures 4 x 2.4 x 0.53” (101.6 x 61.0 x 13.3mm) and is encapsulated for MIL-STD-810G shock and vibration.

Features and options include a 12V standby voltage with 200mA (or 2.4W) capability, remote on/off, pre-biasing start-up, droop mode current share, a DC Good signal, various protections (OVP, UVP, OCP, OTP) and a PMBus interface. The interface can be used to program (read-write) the output voltage and fault management functions and monitor the unit’s operating status.

The series has been certified to the IEC/UL/CSA/EN 60950-1 safety standards (62368-1 pending) and carries the CE mark for the Low Voltage and RoHS Directives.  Input to ground isolation is 2,500Vac, input to output 3,000Vac and output to case 1,500Vdc.

More information can be obtained at the following TDK-Lambda Americas website, https://www.us.tdk-lambda.com/lp/products/pfh-series.htm, or by calling 800-LAMBDA-4.  Product availability for the PFH500F series can be found via the link to TDK-Lambda’s distributor network (see “Check Distributor Stock to Buy”) at https://www.us.tdk-lambda.com/lp/.

Major Applications

COTS (Commercial-Off-The-Shelf), power amplifiers, LED displays and test equipment.

Main Features and Benefits

  • 4” x 2.4” foot-print
  • High Efficiency – up to 92%
  • PMBus™ interface
  • Parallel capability (droop mode)

Major Specifications

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About TDK Corporation

TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio features passive components such as ceramic, aluminium electrolytic and film capacitors, and magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2018, TDK posted total sales of USD 12 billion and employed about 103,000 people worldwide.

About TDK-Lambda Corporation

TDK-Lambda Corporation, a group company of TDK Corporation, is a leading global power supply company providing highly reliable power supplies for industrial equipment worldwide. TDK-Lambda Corporation meets the various needs of customers with our entire range of activities, from research and development through to manufacturing, sales, and service with bases in five key areas, covering Japan, Europe, America, China, and Asia.

For more details, please pay a visit to http://www.tdk-lambda.com/

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Editorial Contact:

Tom Tillman, Director of Marketing
TDK-Lambda Americas Inc.
401 Mile of Cars Way, Suite 325
National City, CA 91950
Ph: 619-575-4400
Email: tom.tillman@us.tdk-lambda.com