用于超高效机架级电源转换的差分功率处理.pdf

1、OCP EMEA Summit 29 April|Dublin,IrelandMichael Solomentsev,PhDCEO/Founder,Palanquin PDifferential Power Processing for Ultra-Efficient Rack Level Power ConversionRack density drives power supply innovationORV3:3kWORV3 HPR:5.5kWORV3 HPR2:12kWEfficiencies Constant at 96%-97.5%High GPU peak power requi

2、rementsCan over-specify of system requirements(e.g.200%of rated power)Super-capacitor based in-rack peak shaving solutionsAt 100s of kilowatts move to 400V or+/-400V DC distributionReduce distribution and power conversion lossesPower sidecars to move more power conversion out of compute racksNeed fo

3、r high efficiency at every stage!Palanquin proposing&developing ultra-high efficiency&power density solutions for rack-level conversionNew AI compute causing additional problemsDC/DCxPUsPower Shelf415/240 V AC48V DC400 V DCDC/DCxPUsPower ShelfDC/DCxPUsDC/DC48V DC48V DCDC/DCxPUsDifferential Power Pro

4、cessing SystemDC/DCxPUsStatus QuoPalanquin:Differential Power ProcessingIn server 400V-1VIn rack 400V-1V48V DCConventional systems are limited by converter efficiency.90%System EfficiencyDistribution BusPower ConvertersServers1 kW800 W1 kWPROCESS TOTAL LOADCUMULATIVE280W loss(90%Efficiency)1 kW800 W

5、1 kW100 W loss80 W loss100 W lossDistribution BusBackup Battery UnitDifferential power processing offers ultra-high efficiencies.Distribution BusPower ConvertersServers1 kW70 WBackup Battery Unit800 W140 W70 W1 kWPROCESS DIFFERENCE BETWEEN LOADS(90%Efficiency)7 W loss14 W loss7 W loss99%System Effic

6、iencyCUMULATIVE28W lossThis approach achieves ultra-high efficiency.Experimentally validated to have 99.5+%under well-matched loading conditions(low-power)Very relevant for AI applications with high utilization and large power demandsCan optimize individual po