Product News:

Quarter Brick DC-DC Converters have 200-425 Vdc input.

Press Release Summary:

Quarter Brick DC-DC Converters  have 200-425 Vdc input.

Feb 10, 2014 - Suited for HVDC and solar cell related applications, PH-A280 Power Modules are available in 4 output levels of 50, 75, 100, and 150 W with nominal output voltages of 5, 12, 24, or 48 Vdc, adjustable by -20% to +10%. Converters offer efficiencies up to 90% and operate at full load over wide baseplate temperature of -40 to +100°C, making them suitable for liquid-, air-, or conduction-cooled systems. Measuring 37.2 x 12.7 x 58.3 mm, all models have input-to-output isolation of 3 kVac.

Original Press Release

Quarter Brick DC-DC Converters have a 200-425VDC Input

Press release date: Jan 01, 2014

TDK Corporation announces the introduction of the TDK-Lambda PH-A280 series of DC-DC power modules with high voltage DC input.  These quarter-brick modules operate from a wide range DC input of 200 to 425VDC, which is widely used in HVDC (High Voltage DC Current) and solar cell related applications.

The PH-A280 power modules are available in four output power levels of 50W, 75W, 100W and 150W. Nominal output voltages consist of 5V, 12V, 24V 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 series.

The modules can operate at full load over a wide 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 TDK-Lambda’s 5-year warranty.  All models have an input-to-output isolation of 3kVAC, are safety-approved to UL/CSA/EN60950-1 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 plant 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 model numbers

Major specifications

Model   PH50A280 PH75A280 PH100A280 PH150A280
Input voltage range Vdc 200 – 425
Nominal output voltages Vdc 5, 12, 24 & 48V (Adjustable up to +/-20%)  
Efficiency (Typ.) % Up to 90% (48V Model, 280Vdc Input)  
Maximum output power W 50 75 100 150
Cooling - Conduction cooling
 Operating temperature °C -40 to +100°C (Baseplate)
Safety - UL60950-1, CSA60950-1, EN60950-1, CE Mark (LVD)
Size (W x H x D) mm 37.2 x 12.7 x 58.3  
Warranty  Years Five

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* 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.

* 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 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

Region Contact
David Norton
TDK-Lambda Americas
(619) 575 4400