Digitally controlled 300W eighth bricks offer improved dynamic response

Posted by Dulcie on March 11, 2015
Posted in: News


• 48Vdc Input with 9.6 to 12Vdc 300W Outputs
• 1/8th Brick Footprint
• Digital Non-linear Adaptive Control

TDK Corporation announces the introduction of the iEH series of 300W 1/8th brick DC-DC converters. Utilising digital non-linear adaptive control, these converters offer improved dynamic response, better system stability and increased reliability due to a reduced component count. This makes the series ideal for demanding communications, test and broadcast applications.

The iEH series can provide output voltages of 9.6, 10.2, 10.8 or 12Vdc with currents up to 33A from a nominal input of 48Vdc. The digital control also enables component optimisation and high efficiency up to 95.5% to deliver 265W of output power at 55oC ambient, or 284W with the optional baseplate, with just 1m/s airflow. In addition, the converters can be paralleled for additional power by specifying the droop mode current share option.

The converters are in the industry standard eighth brick package measuring 58.4 x 22.9 x 12.7mm. Standard features of the iEH series include remote on/off, output over-current protection, input under/over-voltage protection, output over-voltage protection and over-temperature protection.

All iEH models are fully isolated with an input to output isolation of 2,250Vdc and 1,500Vdc input to baseplate. Safety certification includes IEC/EN 60950-1, UL 60950-1 with CE marking for the Low Voltage and RoHS2 Directives.

For more information about the full range of TDK-Lambda iEH series of DC-DC converters, please call TDK-Lambda directly on +44 (0)1271 856600 or visit the TDK-Lambda website at:

Follow us at, watch our videos on, connect with us at and, and read our blog at