1/16th DC/DC buck converters deliver 750W
TDK-Lambda designed the i7A series of non-isolated buck DC/DC converters to derive additional high-power outputs from a 24Vdc power supply, at a lower cost and higher efficiency than isolated DC/DC converters. The compact DC/DC converters are suitable for use in robotics, drones, medical, industrial, test, measurement and portable battery-powered equipment.
The 750W rated i7A series DC/DC converters are packaged in the industry-standard 1/16th brick footprint. The output voltage of these 24V nominal input step-down converters can be adjusted from 3.3 to 18V with a maximum current of 45A.
Efficiencies of up to 98.5 per cent minimise internal losses and allow the i7A modules to operate in ambient temperatures of -40 to +125 degrees C, even with low airflow conditions, says TDK-Lamda. The i7A’s design provides a low output ripple and minimal external components are required, compared to discrete solutions, says the company, for cost and PCB space savings.
There is a choice of three mechanical configurations, measuring 34mm wide and 36.8mm in length. The 11.5mm high open-frame model makes the i7A DC/DC converters suitable for low profile applications and the baseplate version can be conduction-cooled to a cold plate. It is 12.7mm high. Models with an integral heatsink, used in for convection or forced air cooling applications, are 24.9mm high.
The i7A standard model has output voltage adjustment, + remote sense, remote on-off (positive or negative logic available), input under-voltage, over-current and over-temperature protection. Evaluation boards are available.
All models have safety certification to the IEC/UL/CSA/EN 62368-1 standards, with CE marking to the Low Voltage and RoHS Directives.
TDK was established in 1935 to commercialise ferrite for electronic and magnetic products. Its portfolio features passive components such as ceramic, aluminium electrolytic and film capacitors, as well as magnetics, high-frequency and piezo and protection devices. There are also sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors, power supplies and energy devices and magnetic heads.
Products are marketed under the brands TDK, Epcos, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America.
TDK-Lambda supplies power conversion products for industrial and medical equipment worldwide. It has R&D, manufacturing, sales and service locations in Japan, EMEA, Americas, China and ASEAN.