TDK Lambda Americas Inc
TDK World Wide


Power Supply Products

35A POL Converter has PMBus™ Communication

San Diego, CA – November 2015 –

TDK Corporation announces the introduction of the 35 Ampere TDK-Lambda iJA series of POL (Point of Load) non-isolated DC-DC converters. Being PMBus™ compliant and featuring digital control, these converters provide better dynamic performance, improved system stability and  allow a great deal of flexibility and customization to the end application’s needs.

Operating from an 8 to 14VDC input, the iJA series can provide output voltages from 0.6 to 3.3V, with a precision set point accuracy of 1%.  The series is designed to meet a wide range of applications, including servers, routers and other Information & Communication Technology (ICT) equipment, semiconductor manufacturing equipment, measuring equipment and general industrial equipment.

The surface mount converters occupy only 0.45 square inch of board space, representing an ultra-high power density of 580 Watts per cubic inch.  Overall dimensions are 22.9mm x 12.7mm x 9.7mm with a weight of just 6.5g.  Optimization of components using digital control enables a high current output in high temperature, low airflow environments.  The iJA power module has a typical efficiency of 94% with a 3.3V output, 12V input and 80% loading.

The PMBus™ read-write functionality of the converter provides real-time, precision monitoring of voltage, current and temperature, and allows full programmability of the iJA parameters.  Function setting pins make them easy to use in applications where PMBus™ communication is not implemented.  A GUI (Graphical User Interface) and evaluation boards are available for development support.

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


Major applications

  • Servers, routers and other ICT equipment, semiconductor manufacturing equipment, measuring equipment and general industrial equipment

Main features and benefits

  • High efficiency (Up to 94%)
  • PMBus communication for real time monitoring
  • Digital control for highly accurate voltage setting (+/-1%)
  • Auto-tuning technology for better dynamic performance and system stability

Major specifications




Input Voltage Range


8 to 14V

Output Voltage Range


0.6 to 3.3V

Maximum Output Power





94% (3.3V output, 12V input, 80% loading)

Mounting Type


Surface Mount

Size (L x W x H)


22.9 x 12.7 x 9.7


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: 619-575-4400