Compact dc/dc converter rated at 185°C suits oil, gas exploration

The HiRel HTB28 series offer the industry’s first hermetic hybrid dc/dc converters rated at 185ºC in a 1 in.-wide, 3.82-in. long (including the flange), and 0.41-in. high package. They save approximately 20% space compared to a PCB-based product. The converters target oil and gas exploration downhole tools and can withstand the high temperature as well as the high shock environment typically found in these applications.

The rugged dc/dc converters leverage a proprietary, magnetically coupled feedback topology. The 5-W, 28-V input isolated converters offer 69% minimum efficiency and feature internal input and output filters, low input quiescent current and overcurrent protection. The device offers 1,200-h operation at 185ºC, exceeding the maximum requirement for drilling operations.