JeffZhou-新能源汽车48V系统MPS创新解决方案.pdf

1、rev 20180504Automotive 48V and MPS SolutionsJeff Zhou2025.8Automotive 48V Market Entering Mainstream0306090202420282034Billions($)48V System Market Size in(USD Billions)Source:Precedence Research,Automotive 48V System Market Size August 202425%CAGRWhy 48V?Why 48V?Higher power required by EVsData sou

2、rce:TeslaDrive-by-Wire2kWHigher Power SoC(ADAS,Cockpit,AI Box)1kWActive Suspension System1-2kW48V is necessary!Increasing Load Power:Why 48V?Lower power loss/weight/cost12V600W Load Example10 mm2108 grams/meter4.5 Watts/meter50 Amps48V1.5 mm217 grams/meter1.9 Watts/meter12.5 Amps80%Smaller size80%We

3、ight reduction50%Less loss in wiringOhms LawWhy 48V?Why not higher than 48V?1)GB/T18384.32)ECE-R100.0360V DC is a safety limit voltage for human;If higher than 60V DC bus,insulation or isolation needed to be considered in design48V EV Structure&Zonal Control UnitArchitecture of 48V System-ZonalRight

4、 ZCU48VHV48V12V12V48V48V BattJump start48V12VSafety redundancy supplyRear ZCULeft ZCU12/48VCircular/Distributed ArchitectureZCUs are classified by position;Short wire:low cost,light weight,simple assembly;Safety:key components have redundant power;48V harness12V harnessArchitecture of 48V Zonal Cont

5、rol Unit48V battery70V+Protection&Monitor 48V to 12V DCDC1kW48V_Prot12V_Prot48V loadsProcessorSoCMCU48V Motor Actuators65V Buck/PMIC70V+E-Fuse&HSS40V E-FUSE&HSS48V70V+E-FUSE&HSS12V loads48V ZCU70V+Multi-Half Bridge Driver70V+3-Phase BLDC Driver48V to 12V DCDC1kWMPS has overall sockets solution in 48

6、V ZCU48V to 12V DCDC in ZCU48V ZCU High Power DCDC Requirement Small Size and high power High efficiency need up to 97%Bi-directional operation Output has no risk to see 48V Build in soft startup Rich protectionTopology for High Power DCDCMulti-Phase BuckSwitch capOpen Loop LLCHybrid buckSmall Size