Sixteenth-brick power converters focus on low-profile applications
Designed to operate with a 36 V to 75 V input voltage range, the PKU-C series is primarily designed for applications that are powered by a centralized 48V bus. However, due to its efficient and flexible power performance, the series is also suitable for a wide range of applications including those in industrial, process control and automation.
A key application for the devices is decentralized local data-storage equipment that requires 12 V and 5 V to power disk drives. Systems designers of these applications gain significant design freedom with the combination of the new 12 V PKU4104C and 5 V PKU4105C. Traditionally mid-power applications, and especially decentralized disk-drive storage systems, have used multiple-output DC/DC converters, but cost-optimization and shorter time-to-market demands, in the high-power segment, have led to the migration to intermediate bus voltage architectures.
Because the PKU-C devices are isolated and feature a floating output, the two modules can also be combined to power the 12 V and 5 V rails in a disk-drive-array application requiring higher power than 100 W. Additionally, designers can combine the 12 V PKU4104C with Ericsson’s BMR462 3E digital voltage regulator to generate the 5 V rail in single-disk applications.
The PKU-C series also delivers outstanding thermal performance for applications that have limited airflow. The series delivers full performance up to 80 °C with a 3.0 m/s airflow, and, in worse case conditions, full output power with natural convection up to 65 °C.
Offering an MTBF (Mean-Time-Before-Failure) of 4.27 million hours, the PKU-C devices meets safety requirements according to IEC/EN/UL 60950-1, and offers input/output isolation of 1500V(DC) and various protection features, including Output-over-Voltage Protection (OVP), input under voltage shutdown, Over-Temperature Protection (OTP), output short-circuit protection and pre-biased output. The PKU-C series is available in both through-hole (PI version) and surface-mount (SI version).
Available in an industry-standard sixteenth-brick footprint, with dimensions of 33 x 22.9 with a low profile height of only 8.5 mm (1.3 x 0.9 x 0.334 inches), the devices deliver up to 100 W, and provide 92.7% efficiency at 50% load and 12 V output, guaranteeing low power dissipation and reduced energy consumption.
Visit Ericsson Power Modules at www.ericsson.com/powermodules
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