Specifically optimized for NVIDIA Kyber's liquid-cooled rack blade architecture, these ultra-compact solutions free up approximately 30% of space on densely populated power distribution boards (PDBs), with an estimated 30% reduction in the number of bill of materials (BOM) components, streamlining design and improving overall reliability. These designs are highly efficient, achieving at least 88% efficiency online and under load.
“As the only company offering 1700V GaN devices with a single HEMT, Power Integrations can design these best-in-class, high-efficiency flyback converters with a low bill of materials (BOM) while maintaining ample safety margins on an 800V bus,” said Jason Yan, senior director of training at Power Integrations. “The only alternative solutions are expensive, discrete silicon carbide (SiC) devices, which require 30% more components and space to operate.”.
Recently published design example reports describe 35W and 15W flyback auxiliary power supplies for high-voltage AI data center applications. These compact power supplies (PSUs) provide power to internal components such as microcontrollers (MCUs), gate drivers, and operational amplifiers, which perform critical "control and maintain" functions to ensure system reliability, efficiency, and safety. Both designs are based on Power Integrations' InnoMux™-2 integrated circuits with 1700V gallium nitride (GaN) PowiGaN technology. The InnoMux-2 IC, rated at 1700V, readily supports a nominal input voltage of 1000VDC in a flyback configuration and can deliver a consistent 90% efficiency in discontinuous conduction mode (DCM) while maximizing power delivery. Resources These designs can be downloaded for free from power.com: · DER-1110 [NF1] – This design uses the IMX2353F to provide a 35W multi-output flyback power supply for auxiliary power supplies used in high-voltage AI data centers. · DER-1114 [NF2] : This design uses the IMX2353F to provide a 15W single-output flyback power supply for auxiliary power supplies used in high-voltage AI data centers.
