Non-isolated buck-boost DC-DC converters deliver up to 200W

TDK Corporation has introduced the TDK-Lambda brand 200W rated i1C series in the 1”x1” industry standard package size. These non-isolated, buck-boost DC-DC (step-up, step-down) converters function from input voltages of 9V to 36V or 18V to 75V. The i1C series adjusts output voltages from 9.6V to 28V with output currents of up to 10A.

The series is excellent for generating a wide range of high-power DC outputs from 12V, 24V, and 48V system voltages in medical, industrial, test, measurement, and battery-powered equipment such as AGVs, IMR, and drones. The models can also replace existing isolated converters, supplying a higher power migration path for applications needing further output power, as the AC/DC source often provides the isolation barrier.

The series has a remarkable efficiency of up to 98%, enabling the converters to provide high usable power in demanding thermal environments with case temperatures of -40C and up to +120C while supplying a longer battery life. Dimensions and pin-out are compatible with the industry standard 1” x 1” footprint, measuring 26.42mm x 26.42mm x 10.2mm (W x L x H). The converters are encapsulated to enhance shock and vibration performance, and the five-sided aluminium case reduces radiated EMI to ensure easier system compliance.

As standard, models comprise an output voltage adjustment pin, positive or negative logic remote on-off, input under-voltage, over-current, and thermal protection.

All models carry the CE and UKCA marks for the Low Voltage and RoHS Directives and are designed to the IEC/UL/CSA/EN 62368-1 safety standards. Evaluation boards are offered for quick and easy testing.