New DC-DC converter delivers high power density up to 481 W/cubic inch

Murata Power Solutions has announced the latest addition to its OKLP range of Power Block products. In addition to the established 25A and 35A, the company now offers the OKLP-X/60-W12A-C, a 60A Power Block solution. This Power Block concept sits between a discrete Point-of-Load (PoL) design and that of a complete non-isolated buck converter module. The Power Block is essentially a non-isolated buck converter without the PWM controller. It provides a single package solution that incorporates all of the power handling components, fully tested and characterized for thermal and dynamic performance. The Power Block design approach allows the power engineer to achieve the highest efficiency and maximum possible power and current density while maintaining a high performance system at a lower cost when compared to a complete module design approach. Most analog or digital PWM controllers can be used with the Power Block. Reference designs are available using Texas Instrument’s TPS40425 (2-Phase, stackable PMBUS synchronous buck controller). The OKLP-X60-W12A-C provides a regulated 0.6 – 3.63VDC output of up to 60A from a 7 – 13.2VDC input and is suited to use in point-of-load (PoL) applications. Energy efficiency, rated at 12Vin and 3.3Vout, is typically 95% and with its compact dimensions of 25.4mm x 12.7mm x 12.2mm a power density of up to 481W per cubic inch can be achieved. The OKLP-X/60-W12A-C is ideally suited to powering FPGAs, ASICs, microprocessors and providing I/O voltages in Intermediate Bus Architecture applications, says the company.