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Power Supply Products
PH-A280 Series of High Input Voltage DC-DC Power Modules with Conduction Cooling Developed

PFE-SA Series of High Efficiency AC-DC Power Modules with Conduction Cooling Developed

September 30, 2013

TDK Corporation announces the successful development of the TDK-Lambda brand PH-A280 series of high-efficiency DC-DC power modules suitable for high input voltages. The new product series meets various customer needs by providing support for outdoor equipment requiring water-cooled, hermetically sealed, fanless construction or compact equipment with high mounting density for which conduction cooling is most suitable. Orders for the product starting with the PH150A280 model will be accepted by TDK-Lambda Corporation (President: Yoshiaki Hirota) from October 10, 2013.

The PH-A280 series succeeds the highly renowned and successful PH-S280/PH-F280 series, offering a 50% size reduction and 5% higher efficiency (series maximum 90%). In addition to this significant further improvement in basic performance, the input voltage upper limit has been extended to 425 V DC.

Besides earlier usage patterns such as for system power supply and distributed power Architecture, the new products are also suitable for HVDC (High Voltage DC Current) and solar cell related applications. Furthermore, the PH-A280 series offers the largest lineup of product versions in this category, which ensures that an ideal solution is available for a wide range of customer requirements.

■ Major applications

Automated devices for industrial and commercial applications, measuring equipment, general industrial equipment, smart city and plant related equipment

■ Main features and benefits

  • High efficiency: 90% (series maximum), 5% improvement over earlier product
  • Dimensions: Industry standard 1/4 brick size, 50% reduction from existing product
  • Input voltage range: Upper limit extended to 200 to 425 V DC
  • Lineup: Same version lineup as existing series, from 50 to 150 W

■ Major specifications: PH-A280 series

Model PH50A280 PH75A280 PH100A280 PH150A280
200 to 425 V DC
Output voltage 5 V 12 V 24 V 48 V 5 V 12 V 24 V 48 V 5 V 12 V 24 V 48 V 12 V 24 V 48 V
Output current 10.0 A 4.2 A 2.1 A 1.1 A 15.0 A 6.3 A 3.2 A 1.6 A 20.0
8.4 A 4.2 A 2.1 A 12.5 A 6.3 A 3.2 A
Output power 50.0
52.8W 75.0
75.6W 76.8W 76.8W 100.0W 100.8W 100.8W 100.8W 150.0W 151.2W 153.6W
Output voltage range -20 to +20% -20 to +10% -20 to
-20 to +10% -20 to
-20 to +10% -20 to +10%
Efficiency (typ.) 86% 88% 88% 89% 86% 88% 89% 90% 86% 88% 89% 90% 88% 89% 90%
Operating temperature (BP) -40°C to +100°C
Dimensions (W x H x D) 37.2 x 12.7 x 58.3 mm (1/4 brick size)  
Safety standards UL60950-1, CSA60950-1, CE Mark (EN60950-1)
Warranty 5 years

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 2013, TDK posted total sales of USD 9.1 billion and employed about 80,000 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


Contacts for regional media

Region Contact Phone Mail
Japan Ms. Mari KONISHI TDK Corporation
Tokyo, Japan
+81 3 6852-7102

Product Information

Product information on this web site is intended only for the Japanese market.

For other markets, please access the respective regional web site or contact your nearest sales office.

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