Specifications
Product
InnoMux-2 flyback switcher IC family
Switch
Industry's first 1700 V gallium-nitride (PowiGaN) switch
Input voltage
Up to 1000 VDC
Topology
Multi-output flyback with pulse sharing
System efficiency
Greater than 90.3% at 12 V in a fan-less 800 VDC architecture
Switching
SR zero-voltage switching (ZVS), single-HEMT design
Reference design DER-1110
35 W isolated six-rail auxiliary PSU, 80 x 60 mm, 8 mm profile
15 W design
Single-output, 30 x 30 mm, 7 mm profile
Target platform
NVIDIA Kyber liquid-cooled 800 VDC blade rack
GaN options
1250 V and 1700 V PowiGaN families
Benefit
Low BOM count with wide safety margin on an 800 V bus
Function
Powers MCUs, gate drivers and op-amps (control and housekeeping)
Compliance
RoHS, high-voltage isolation
Overview
Power Integrations' InnoMux-2 family integrates a 1700 V PowiGaN gallium-nitride switch into a multi-output flyback switcher IC — the industry's first 1700 V GaN power device. It accepts up to 1000 VDC input and delivers above 90.3% system efficiency at 12 V without fans.
Two published reference designs target NVIDIA's Kyber liquid-cooled 800 VDC blade architecture: a 35 W isolated six-rail auxiliary supply measuring 80 x 60 mm with an 8 mm profile, and a 15 W single-output design in 30 x 30 mm with a 7 mm profile. These compact boards power MCUs, gate drivers and op-amps inside the rack.
Key Benefits
First 1700 V GaN switch in a single-HEMT flyback IC. Above 90.3% efficiency in fan-less 800 VDC racks. Ultra-slim 7-8 mm auxiliary PSU reference designs for NVIDIA Kyber
Applications
800 VDC AI data center auxiliary and housekeeping power; gate-driver and MCU bias supplies; high-voltage industrial flyback converters; liquid-cooled blade-rack power design.
Request a Quote — POWER INTEGRATIONS INNOMUX-2 WITH 1700 V POWIGAN — 800 VDC AI DATA CENTER AUXILIARY POWER
QS Compute — global B2B supply of AI computing hardware, edge AI systems and accelerators. Volume pricing, 15-day sample lead time.
Get Your Quote →