TDK Lambda Americas Inc
TDK World Wide


Power Supply Products

200 - 425VDC Input DC-DC Converter Series Extended With Additional Output Voltages


San Diego, CA – July 2015 –

TDK Corporation announces the introduction of an extension to the TDK-Lambda PH-A280 series of DC-DC power modules with high voltage DC input.  Operating from a wide range DC input of 200 to 425VDC, which is widely used in HVDC (High Voltage DC Current) applications, the PH-A280 range now includes 3.3V, 15V and 28V outputs.

The six new PH-A280 power modules are available in three output power levels - 75W, 100W and 150W. The complete product family encompasses nominal output voltages of 3.3V, 5V, 12V, 15V, 24V, 28V or 48Vdc; adjustable by -20% to +10% (+/-20% for 5V output models).  Efficiencies of up to 90% are achieved, an improvement of 5% over the prior PH series.

All modules operate at full load over a baseplate temperature range of -40 to +100°C making them suitable for liquid, air cooled or conduction cooled systems.  The dimensions follow the industry standard quarter brick format (37.2 x 12.7 x 58.3mm).

As standard, the PH-A280 units are equipped with remote sense, remote on/off, overvoltage and overcurrent protection circuitry and include a 5-year warranty.  All models have an input-to-output isolation of 3kVAC, are safety-approved to UL/CSA/EN 60950-1 and carry the CE mark in accordance with the LV Directive.

More information can be obtained at the following TDK-Lambda Americas website,, or by calling 800-LAMBDA-4.  Product availability for the PH-A280 series can be found via the link to TDK-Lambda’s distributor network (see “Check Distributor Stock to Buy”) at


Major applications

  • Industrial applications, smart city, test and measurement and power generation related equipment 

Main features and benefits

  • Industry standard ¼ brick format
  • High efficiency of up to 90%
  • 200 to 425VDC input
  • Wide line up of output voltages from 3.3V to 48V

Major specifications








Input voltage range


200 – 425

Nominal output voltages


3.3, 5, 12, 15, 24, 28 & 48V

Efficiency (Typ.)


Up to 90% (48V Model, 280Vdc Input)

Maximum output power








Conduction cooling  

Operating temperature

-40 to +100°C (Baseplate)



UL60950-1,   CSA60950-1, EN60950-1, CE Mark (LVD)

Size (W x H x D)


37.2 x 12.7 x 58.3






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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 includes electronic components, modules and systems* which are marketed under the product brands TDK and EPCOS, power supplies, magnetic application products as well as energy devices, flash memory application devices, and others. TDK focuses on demanding markets in the areas of information and communication technology and consumer, automotive and industrial 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 2015, TDK posted total sales of USD 9.0 billion and employed about 88,000 people worldwide.

* The product portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites, inductors, high-frequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection components, and sensors.

About TDK-Lambda

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. 

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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: 619-628-2872