Pebble is the first in a series of harsh environment power supplies from the company that combine a new topology, custom-designed FET drivers, and fast switching speed to deliver industry-changing benefits.
On-Systems' new topology combines three stages into one, reducing I²R losses and increasing efficiency. On-Systems has worked with a leading power semiconductor company to design new, ultra-fast FET drivers, enabling Pebble to switch up to 40 times the typical switching frequencies. This high speed reduces the size of the required EMC filtering components, so the portable power supply meets all defense EMC performance standards, including MIL-STD 1275A-E, MIL-STD 704A-F, DEF-STAN 59-411, and MIL-STD 461 EF EMC, in a package measuring only 115 x 52 x 36 mm and weighing just 180 g. Pebble is 96% efficient, operates over a universal AC input range and a wide DC input range, features short-circuit, overload, and overvoltage protection, and comes with a four-year warranty.
According to On-Systems CCO Mike Harvey: "Traditional laptop power supplies that need to be electrically silent for use in secure and harsh environments are roughly the same size as a laptop and weigh 2 to 3 kg because they require both filtering and a heat sink. Pebble, on the other hand, retains the familiar look of a commercial power adapter but is fully certified for defense use. Furthermore, we can use the same technology in other applications, particularly in aircraft fuel pump systems, where the space and weight savings will be of great interest.".
