Efficient 250W baseplate-cooled quarter-brick DC-DC converter

Murata Power Solutions has announced a new development initiative for Industrial Class DC-DC converter modules. The first in this series is a 250W isolated DC-DC quarter-brick converter, the ICQ series. The highly-efficient converters, typically 92%, are believed to be the only power modules on the market to offer 250W of output power from a quarter-brick format with a 4:1 (9 to 36VDC) Vin range. The ICQ series is designed for rough service / industrial applications and incorporates features such as a specially designed enclosed package that uses baseplate cooling to improve thermal performance. The electrical and mechanical design allows the ICQ series to deliver the full 255W output power with a baseplate temperature in the range of -40C to +90C without derating. In addition, the ICQ is designed to meet the environmental stress limits for shock & vibration specified in MIL-STD-810G throughout its service life. The ICQ0120V1PC achieves its high performance by incorporating proprietary circuit architectures, synchronous rectification, advanced packaging, and thermal design approaches. Accommodating a wide 4:1 input voltage range for operation from 9 to 36VDC, the initial ICQ delivers a regulated 12 VDC output rated at 20 A and provides a basic insulation system for galvanic I/O isolation rated at 2,500VDC. The ICQ has been designed to meet EN60950, UL/CSA safety requirements for imbedded power modules. The industry-standard quarter-brick package measures 39.1mm x 60.7mm x 12.7mm and is ideal as a drop-in replacement for lower power less efficient converters. All models come with a positive logic remote On/Off control as the standard configuration, and full protection features including input transient protection to 50VDC, over temperature shutdown, output over current, and input under voltage lockout, says the company.