TDK has added 12.5A max 300W max rated models to its i7C series of non-isolated dc-dc back bost converters that can produce outputs higher or lower than the input voltage.

TDK-Lambda-i7C-buck-boost-dcdc

Inputs can range across 9 to 53V, wile outputs can span 5 to 28V.

“The converters seamlessly transition from buck to boost mode operation without disruption in performance,” according to the company. “When compared to similarly rated isolated DC-DC converters, i7C offers significantly lower cost, a smaller size and higher efficiency levels.”

During light load, control circuitry reduces power consumption – at zero load input current is typically 5mA, reducing to 250μA when the remote on-off puts the PSU into stand-by.

As well as remote on-off (positive or negative logic), standard features include a trim pin for output voltage adjustment, + remote sense and protection against input under-voltage, over-current and over-temperature.

Optionally, there is a power good signal, output current monitoring and external clock switching frequency synchronisation.

Three mechanical configurations are available, each 36.8mm wide and 34mm long: the 12.2mm high open frame model for low-profile use, a 13mm high base-plate cold-plate version for conduction coolin and one 24.9mm high that has an integral heatsink for convection or forced-air cooling.

Output de-rating is needed, dependent on available cooling.

All models have safety certification to the IEC/EN 62368-1 and 60950-1 standards, with CE marking to the Low Voltage and RoHS Directives.

Applications are expected in medical, communications, industrial, test, measurement, broadcast and portable battery powered equipment.