Press Releases

Power Supply Product
High Current Digital POL Converter iJB Series

  • Industry leading* current density (max. output current 60 A, mounting footprint 1 inch2)
Power Supply Product:High Current Digital POL Converter iJB Series

April 10, 2014

TDK Corporation announces the successful development of the iJB series of high current POL converters to be marketed under the TDK-Lambda brand. TDK-Lambda Corporation will begin shipping samples in April 2014.

The spread of cloud computing services and the smart grid has resulted in a drastic increase in the volume of information that requires transmission, sharing, and storage. Accordingly, the ICT infrastructure equipment that is used for these purposes must handle larger data volumes, placing higher demands on processing power and speed. Semiconductor devices used in such equipment are rapidly evolving towards lower voltage operation, higher current handling, and higher speeds. The power supplies that provide energy to these devices therefore also must be rated for higher currents.

The iJB series can provide an output current of 60 amperes, while requiring a mounting space of only one square inch. This represents current density on an industry-leading level. Optimization of components has resulted in higher efficiency, enabling high current output also in high temperature environments.

Digital control allows highly accurate voltage setting (±0.5%), and PM Bus support enables real-time monitoring of input voltage, input current, internal temperature, and other parameters. This greatly facilitates system optimization by the customer. In addition, the products are equipped with function setting pins, making them easy to use also in applications where PM Bus communication is not implemented.

The iJB series products are POL converters that can deliver the highest current among products of the DPA System Solution product family (power supplies for Distributed Power Architecture) promoted by TDK-Lambda. Together with the PML series and other POL converters, they form an extensive product lineup that can meet the diversified needs of customers.

* As of April 2014, according to TDK data

■ Glossary

  • POL (Point of Load) converter:
    High-efficiency, fast-response DC-DC converters that are placed close to the load and convert the intermediate voltage into the voltage required by semiconductor devices.
  • ICT:
    Information and Communication Technology
  • PM Bus:
    Power Management Bus, a communication standard for controlling power supplies, based on I2C communication.

■ Major applications

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

■ Main features and benefits

  • High efficiency enables high output currents also in a high temperature environment
  • Parallel configuration for large current applications supported
  • Digital control ensures highly accurate voltage setting (±0.5%)
  • High-speed load response characteristics
  • "Power good" signal, remote on/off switching, remote sensing
  • Read/write capability for setting parameters via PM Bus allows system optimization
  • Dedicated GUI for development support

■ Major specifications of iJB series

Model iJB12060A006V
Input voltage range 12 V DC (8 to 14 V)
Output voltage range 0.6 to 2.0 V
Efficiency (typ.) Vo = 1.0V 89.5%
Vo = 1.5V 92.0%
Vo = 2.0V 93.0%
Maximum output power 120 W
Mounting type SMD
Size (W x H x D) 26.8 x 9.7 (max.) x 24.1 mm

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


Contacts for regional media

Region Contact Phone Mail
Japan Mr. Tetsu NAKANISHI 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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