News: Microelectronics
2 June 2026
Power Integrations unveils space-saving, ultra-slim auxiliary PSU reference designs for NVIDIA Kyber 800VDC AI data center
Power Integrations Inc of San Jose, CA, USA (which provides high-voltage integrated circuits for energy-efficient power conversion) has introduced two new ultra-slim, compact auxiliary power supply reference designs for 800VDC AI data centers. The single-output, 15W design is only 30mm by 30mm with a 7mm profile, while the isolated, six-rail, 35W design is only 80mm by 60mm with an 8mm profile.
Optimized specifically for the NVIDIA Kyber liquid-cooled, blade-rack architecture, these ultra-compact solutions free up about 30% space on densely packed main power distribution boards (PDBs) with an estimated 30% reduction in the bill-of-materials (BOM) count — streamlining design and improving overall reliability. These designs are highly efficient with at least 88% efficiency across line and load.
“As the only company offering single-HEMT 1700V GaN devices, Power Integrations can design these best-in-class, highly efficient flyback converters with a low BOM count while maintaining wide safety margins on an 800V bus,” says senior training manager Jason Yan. “The only alternative solutions are discrete, costly silicon carbide (SiC) devices which require 30% more components and space to operate.”
The newly published design example reports describe 35W and 15W flyback auxiliary power supplies for high-voltage AI data-center applications. These compact power supply units (PSUs) provide power for internal components such as MCUs, gate drivers, and op-amps, which deliver critical ‘control and housekeeping’ functions to ensure reliability, efficiency and system safety.
Both designs are based on Power Integrations’ InnoMux-2 ICs with 1700V PowiGaN gallium nitride (GaN) technology. The 1700V-rated InnoMux-2 IC easily supports 1000VDC nominal input voltage in a flyback configuration and can deliver flat efficiency of 90% in discontinuous conduction mode (DCM) while maximizing power delivery.
These designs can be downloaded for free from power.com:
- DER-1110 – this design uses the IMX2353F to deliver a 35W, multi-output flyback PSU for auxiliary power supplies used in high-voltage AI data centers.
- DER-1114 – this design uses the IMX2353F to deliver a 15W, single-output flyback PSU for auxiliary power supplies used in high-voltage AI data centers.
Further information can be obtained by contacting a Power Integrations sales representative or one of the company’s authorized worldwide distributors: DigiKey, Newark, Mouser or RS Components.
Power Integrations details 1250V and 1700V PowiGaN technology for 800VDC AI data centers
