TDK Develops 11 kW Isolated Bidirectional DC-DC Converter with Industry's Highest Power Density

The EZA11K is specifically designed for mounting in a 1U rack (422.8 × 43.6 (1U) × 530 mm). This new product is similar in size to the current EZA2500, but its maximum output power can reach 11 kW, which is equivalent to 4 times that of the EZA2500 model. In addition, it can connect up to 5 units up to 50 kW in parallel.

TDK Corporation is pleased to announce that we have further expanded the TDK-Lambda brand EZA series isolated DC-DC converter product line and developed an 11 kW model (EZA11K) with an output power that is more than 4 times that of the current model. The company added this new product to the 2.5 kW model lineup to help customers reduce the size of their high-power devices. TDK-Lambda will begin selling this product in April this year.

Lithium-ion batteries and other high-performance batteries have been widely used today. For example, such batteries can be used in automotive applications such as PHVs and EVs, industrial applications such as peaking and emergency power supplies, and home applications. In addition, due to the reduction in the prices of solar panels and other related equipment, in addition to the practice of selling electricity to power companies, there is a growing demand for the direct use of electricity generated from renewable energy such as solar power generation and wind power generation. Because of this, the demand for batteries used with the above-mentioned devices is also growing.

The EZA11K is compact and compact (1U in full rack size), but its maximum output power can reach 11 kW, which is more than four times the output power of the current model. Can achieve bidirectional conversion with up to 95% maximum efficiency. In addition, it can quickly change its direction of conversion without stopping work. This device can be connected in parallel for use with systems with output capacities exceeding 11 kW.

TDK integrates integrated circuit control technology (including digital control technology) with low-loss magnetic materials (advantages of TDK), further commits to energy saving and CO2 emission reduction, and continues to advance towards smart society.

This product will be exhibited at the TDK booth of TECHNO-FRONTIER 2017 (Power System Exhibition) held at the Makuhari Exhibition Hall from April 19th to April 21st 2017.

main application

Energy storage system/emergency power supply for peaking and equalizing power consumption.

The energy recycling system of the motor helps to reduce peak power consumption or save energy.

DC bus to stabilize the renewable energy system.

Key features and benefits

Maximum rated output capability up to 11 kW, capable of handling bidirectional power conversion without the need for additional units.

Use an isolated topology with security and noise management advantages.

Compact and compact: W: 422.8, H: 43.6 (1U), D: 530 mm

* Current model (2.5 kW units): W: 422.8, H: 43.6 (1U), D: 400 mm

Efficient: Bidirectional maximum conversion efficiency of 95% or higher (at maximum rating)

It can operate autonomously and can automatically change the direction of the conversion at any time to stabilize the input or output voltage.

Ability to quickly change the direction of the conversion without stopping the converter.

Current, voltage, and direction of change modes can be controlled and monitored by external devices via RS485 serial communications.

Author：Brittany Antonia （The author of article owns the copyright.）