如何提升大功率服务器电源输出效率，使用屏蔽栅沟槽MOSFET AK1G4N009GAL高效转换方案

时间： 2024-07-27 来源：瑶芯微

技术问答

大功率服务器电源的输出效率是衡量其性能的重要指标之一，它直接关系到电源系统的能耗和散热问题。在大功率服务器电源的设计中，通常会使用高性能的功率MOSFET作为关键的功率转换器件。而屏蔽栅沟槽MOSFET（Shielded Gate Trench MOSFET, SGT MOSFET）因其低导通电阻、快速开关速度、较大的安全工作区以及小型化封装等优势，被广泛应用于提高电源系统的效率和功率密度。

据相关数据统计显示，大功率服务器电源市场处于蓬勃发展阶段，全球服务器电源市场规模由2020年的146.4亿元增长至2022年的224.3亿元，并在2024年有望达近300亿元。

针对大功率服务器电源市场，瑶芯屏蔽栅沟槽MOSFET AK1G4N009GAL可用于元器件一级的解决方案，该产品在传统Mosfet管基础上进行改良，提升电源转换效率，从而更加适配服务器电源设计需求。屏蔽栅沟槽MOSFET AK1G4N009GAL主要改进工艺是在栅电极下方增加一块多晶硅电极，即屏蔽电极，该电极与源电极相连，实现了屏蔽栅极与漂移区的作用，减小了米勒电容，在提高器件开关速度的同时实现电源耦合，减小漂移区临界电场强度，在产品特性上表现为导通电阻更小，开关损耗降低，Mosfet管转换效率得到提升。

AK1G4N009GAL的主要参数

低通态电阻特性，提高快速开关速度

大功率服务器电源属于耗电设备，提高功率转换效率可有效节能。由于AK1G4N009GAL具备低通态电阻特性（见图1），其在VGS=10V, ID=50A时，其典型值低至0.65mΩ，最大值也仅为0.9mΩ；在VGS=4.5V, ID=50A时，其典型值低至1.25mΩ，最大值也仅为1.6mΩ；同时器件也具备快速导通、关断特性（见图2），其在VDD = 20 V , RL = 1 Ω,VGS = 10 V, RG = 1.1 Ω时，其导通时间仅需15nS，而关断时间仅为39nS。从以上指标来看，低通态阻抗优化了屏蔽栅沟槽MOSFET AK1G4N009GAL在开通关断上的表现，提高输出功率占比，进而改善转换效率。据官方测试数据显示，在800W服务器电源上，屏蔽栅沟槽MOSFET AK1G4N009GAL相对之前产品，效率优化0.5%以上。

图1

图2

较大的安全工作温度区域

服务器电源属于功率应用密集场合，对整机内的元器件工作稳定性要求高。而屏蔽栅沟槽MOSFET AK1G4N009GAL属于宽温度范围器件，其结温为-55℃~+150℃，可以满足服务器长时间稳定运行的要求。而做到这一点是由于元器件自身损耗小，发热量小，其结壳之间的热阻为1.25℃/W，对比结到环境45℃/W的热阻来说差异巨大，证明其自身损耗低，因此具备更好的工作温度适应能力，可为厂家在散热方面降本增效提供空间，使AK1G4N009GAL更好地满足服务器电源现场应用。

小型化封装，更优散热性能

从服务器电源应用场景分析，电源设备部署在机房，在需要扩容的情况下要布置更多设备，这就提出了小型化和散热的要求。AK1G4N009GAL采用PDFN5X6封装，该封装支持小型化设计，由于其没有引脚，能够实现更加紧凑的布局，减少设备体积。相较于引脚式封装，在结构上其管脚紧贴PCB板，散热表现更佳，同时这种封装在PCB板上更加节省空间，在产品设计上更利于小型化设计，散热性能相较于带引脚的贴装器件更具优势。

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型号- ZC013NG,PD002TG,UL06NG,2SJ601,VS3618AE,ZB006NG,DOS4800,DOS4801,DOS4803,WJ02NG,SH020TG,NCE2030K,WH120NG,SE100DPG,DO2301D,DO2301C,DO2301B,PN07NG,DO2301A,VH300PG,SC003TG,PM09NG,DO3415E,DO6409,SC023NG,DO6403,DO3134,DON603,DO6404,DO6405,DO6400,DJ05NG,DO6401,DO6402,UN02NG,SI2308BDS,SD030NG,NS5R5TG,AOD603,FR09NG,AOD607,BSS138W,AOD609,FH010NG,ZB008PG,DP06NG,SC010NG,DO8818,FQU1N65,BE009PG,DON619,DC014PG,DON617,DO2302D-Q,NC003TG,FO02NG,DR02NG,ZB020DPG,FN15NG,NB003NG,DO2300B,DO2300A,DON629,DC005TG,DE010TG,ZH130NG,UD020PG,DO65R350MF,AOD424,DD003TG,PO07NG,SC014PG,IRFR220N,FQP4N65,STD2N80K5,FQP4N60,IRFR3303,DO3401CA,DO4P20,IRF1404,FQP6N80C,DD012NG,AOD417,DO5N10AA,SC005TG,DO08NG,BH4R5TG,DE030PG,AOD404,PG005NG,IRLB8748,NC010PG,IRL7833S,FQP47P06,FO10NG-C,DO8205A,DO6432,FN08NG-S,PH010NG,BC022NG,IRFU13N20D,SIS413DN,STP95N4F3,AM90P04-07P,DE012NG-H,AO4404B,DH120NG,DC003TG,DO6424,NC001TG,DO3401BA,DO6420,IRLB8743,STP80N70F6,PE040NG,SC025DNG,DG008TG,PD002TG-E,ZD013NG,DH020TG-B,SI7633DP,2N7002K,GJ011TG,DC010NG,FE004TG,BJ011TG,DH020TG-S,UD015PG,FQP2N65,FO05NG-C,UE018NG,NC005NG,PM05NG,UO04NG,ND009DNG,AO4406A,BG2R6TG-7L,UN06NG,IRFR3910,IRFU220N,SI7415DN,DO4N10,DH075TG,DP02NG,PC004NG-Y,FQPF12N60,FQD30N06,DE018TG-M,NE006TG,DC010PG,DH140TG,SB010NG,ZC020PG,NC005PG,DO2308A,FDD3706,PH003TG,FQPF2N65C,ZD013PG,PQ03NG,ZE068PG,SD012NG,IRFP260N,PE009PG,AP9579GH-HF,FQ02NG,NE2R5TG,DO2301G-Q,2N7002DW,SI7228DN,FDS5680,DOG260N,DOS4842,PH3R2TG,SC018PG,ZC018DNG,DOS4606,FN12NG-S,SC055DPG,IRF7341,DO2305A,NC003NG,DD016NG,DN06NG,UH020TG-S,FDS6898A,SC060PG,FQD6N40C,IRFB3307,UO02NG,020TG-S,PE005NG,IRFP064N,QB005DNG,NG,UN04NG,STP40NF03L,FO12NG-S,IRFR9024,DO3416E,DOG064N,DO2302S,PG009NG,FQP2N60,ZD015PG,ATP113,STD12NF06LT4,DQ02NG,IRFL4105,UP02NG,AOTL66912,NC005TG,DB003NG,DOS4614,DOS4618,DO8205,ATP104,DO2301E-Q,PH,DO5N10A,BG003TG,AP6679GH-HF,PH070NG,DB010NG,AM30P10-80D,AO3406,AO3407,TPCA8123,AO3401,AP9563GH,AOI5N50,UQ03NG,AO3404,NE003TG,NH006TG,FDD6690A,AO3400,AO4803A,DO65R190MF,BH100PG,VS3622AE,AO3416,ZE036NG,DO8205CA,DC004NG-Y,DN04NG,AO3415,ZD006NG,AP18P10GM-HF,DO02NG,DG008TG-S,SH020TG-S,PS007NG,FQD19N10L,IRF730,TPCA8109,DE035NG,DOX2301,FQD7N65C,PQ08NG,BH006TG,SC007NG,DOX2302,AON6236,SC006NG-E,DD007NG,PO10NG,FL10NG,DE004TG,ZC008NG,DE100PG,DOL66401,SE012TG,NC009PG,DO8810A,FQ06NG,FQPF4N65C,PN12NG,FQP4N90C,ND002TG-E,DL06NG,FQPF10N65,FO08NG-S,PI045NG,BE004TG,AOI442,ND006NG,AON6411,IRF9Z34,PE012NG,NG008TG,PR04NG,IRFB7740,IRF740,DC009NG,DOS5521,ZC008PG,9435,ZC010DNG,PD3R5NG,DN02NG,WE060NG,IRLR7833,DO2520,BG5R2TG,FN10NG-S,PE025PG,BD004TG,SE036DNG,AOD454A,PH4R5TG,VS3622DE,IRF530,TPCP8009,FQP9N90C,DOY2301,DOY2302,FQPF2N60C,DD040PG,BG2R6TG,NC004NG-A,DJ18NG-L,PJ09NG,TE180PG,IRF520,ZC006NG,DE006TG,UE180PG,FQPF10N60C,SD015PG,FQ08NG,DO8814A,DE090NG,PH006NG,FN47SG,HY1607D,UG008TG,AP9561AGJ-HF,FQP8N65,PC022NG,FC009NG,FQD1N65,DO3402AA,NCE3008M,AP9997GP-HF,SI3443DDV,SH130NG,NP83P06PDG,SC020PG,NTD5406NT4G,DOS4612B,TC055PG,DO05NG-C,NE010TG,DO3415EA,BD002TG,DO2300AA,2N7002,FQP12N,DS008NG,DO2316,FDD5670,BSS84,DO2012A,KF8N60F,ND004TG,DO3400C-S,DH100PG,ZC012DNG,BD002TG-E,DO70R990MF,TPCC8106,AO9926B,PH300NG-P,SH012TG,IRFI830G,NC006DNG,FH017NG,IRF3415,FQU17P06,DD020PG,SI7149ADP,FH070NG,PE018NG-Y,WC022NG,AP9962AGP-HF,IRLZ24N,DH006TG,PHI020NG,DE018NG-Y,TH130NG,DE085PG,DH100NG,IRF7342PBF-1,PI007TG,NB003PG,PJ18NG,DC005NG,DO3404BA,FQPF3N80C,IRFI630G,DD020NG,PM09NG-S,PD004NG,DO7800,ZC2R3TG,FQPF4N60C,FJ09NG,UH012TG,DOS4614B,DOS4614C,PQ06,IRF3205,7N60,PN10NG,AOI4185,FQD10N20L,PJ011TG,SI4102DY,DH200PG,ZC014PG,PE030PG,FM05NG,DC2R3TG,NE009PG,AOD4185,IRFR15N20D,AOD4189,DO3402A,SC035PG,4606,FP10NG,ZE016TG-M,STD30NF03L,BSS84DW,RSE002N06,PC003NG,BHI007TG,SE018NG,FM16NG,FQPF7N65C,DO3019,SI1012CR,NTD5803NT4G,NTD5806N,DB006NG,NB004NG,NTD4805N,DH012TG,ZC012NG,PE010TG,P2204ND5G,DO3400D,TH100NG,DD002TG,UM05NG,DO3400C,DO3400B,2SK2689-01MR,FQU6N40C,DO3003,DOP3205G,UE030PG,DO3400CA,SI4948BEY,ZC003TG,FDMC8462,DO3401B,FQPF6N80C,SC010DNG,DO3401C,UO01NG,DO2312A,DO3400DA,DOS9926A,FMV20N50E,FE030PG,SI4946BEY,DC035NG,NH4R5TG,FP12NG,DO6335,FQPF7N60C,SD040PG,FQ10NG,DO3N10,FM18NG,UJ09NG,PH120NG,DB008NG,PO08NG,NH012TG,DO2310A,DO3400BA,ZC010NG,STF80N10F7,PG008TG,ND002TG,PD003TG,IRF3710,DD004TG,AOT418L,ZB005NG,IRFR3707Z,FDD6685,SE018DNG,PL10NG,PD012NG,DH025TG,ZD010NG,AOD5N50,FQP10N65,GN47SG,STP65NF06,NE014TG-M,FQP10N60,ZC010PG,UN01NG,ZB006DNG,FR06NG,PG006NG,FM09NG,AO8814,PE3R5TG,AO8810,AO4450,DO2302G-Q,FN07NG,NN07SG,IRF540,SE035DNG,DE022PG,FE025PG,DD015PG,AO6409,NE018DTG,NCE6003M,AO6405,AO6404,AOI7N60,18N50,AO6401,AO6400,DC022NG,AO4466,AO6403,IRFP250N,AOI7N65,AO6402,PE004TG-S,DO8804A,SI2323CDS,DH050PG,SUD50P10-43L-GE3,PO02NG,DO70R600MF,NCE30D2519K,DOG250N,AO4435,ZB003NG,NDT451AN,DC033PG,SB010DNG,ND009NG,AO4430,FDMC8878,AP72T12GP-HF,SC020DPG,PN04NG,PE085PG,DOP3710S,DC025NG-L,NCE609,CED630N,AO4446,AO8804,NC004NG,AO4449,AO4443,ZE021NG,AO4440,AO4614B,AO4441,NHI013TG,DD004NG,PS008NG,DOD603,DOD609,DOD607,PG008NG,NC2R3TG,DO3406A,AO6432,PH200PG,DI300NG,PC005NG,DO2302E-Q,DOD617,DO2318A,AOTF16N50,BSS138,SI2328DS,PD010PG,DOD619,IRFI3

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瑶芯微（ALKAIDSEMI）功率器件产品选型指南

目录- 公司简介功率器件产品命名规则功率器件产品应用推荐功率器件产品清单

型号- AKT4050K,AKS65N1K8FM,AKT3B165GL,AKCK2M080WAMH-A,AKS60N680LMF,AKG10N077GM,AKCK2M040WAMH-A,AKC65D008PAHH,AKG85N050P,AKT4050G,AKBK2A040WHH,AKG10N077GL,AKT20P50Q,AKBK2A040WHM,AKT1A024MBU,AKT30P35K,AK1K2FRD51,AKG85N050D,AKG6N200KL,AKT20P75CG,AKG3N007GL,AKT15P230EL,AKG4N012GM,AKG4N007TL,AKG4N007TM,AKT30P35G,AKT2A165EAU,AKT7002,AKT3070Q,AKCK7M1M0WMH,AKG4N068GL-A,AKG15N110PM,AKT4P135GM-A,AKT3075CQ,AKS65N3K6FAM,AKC65D010DHH,AKT2N105SU,AKT30P10S,AKT3B350GL,AKT4060K,AKG4N024KM,AKCK2D015WBHH,AKT300808S,AKS65N410WMF,AKT40P06S,AKG4N070QL,AKDK2N075WBH,AKT20P60Q,AKT30P25Q,AKT20P60K,AK1K2FRD77,AKG4N013GM-A,AKG10N130KL,AKG4N006TM,AKT20A12K,AKC650D006PA,AKG120N7G,AKT30P25K,AKT3080Q,AKT4P138KM-A,AKT3080K,AKS70N6K0FM,AK750FRD49,AKT3080G,AKG3N019GL,AKS65N1K9FM,AKG10A900AL,AKG6N028GL,AKG6N300KL,AKT20P70K,AKG10N016TM,AKT30P55K,AKCK2M080WMH,AKT2301B,AKT2301A,AKT4407A,AKG4N024DM,AKG4N036GL,AKT3P190KL,AKT30A19P,AKT30A19K,AKCK2M030DBMH,AKS65N3K6FM,AKS70N3K6FM,AKT30P55G,AKG6N016GL,AKT30A19D,AKT3090K,AKT3090G,AKT30P30G,AKT4A160GL,AKT2302B,AKT2302A,AKS65N1K9DM,AK1K2FRD24,AK1K2FRD25,AKG4N026KM,AKT3A200QL,AKS65N1K9FAM,AKBK2A075YHH,AKG85N052P,AKT4080K,AKT30P22G,AKG10N042DM,AKG10N015TM,AKT30P45Q,AKG10N036PM,AKT30P45K,AKG10N130GL,AKT20P80G,AKG4A058GM-A,AKBK2A075YHM,AK1K2FRD35,AKG85N065P,AKT3B300QL,AKG10N100PM,AKT30P45G,AKG10N054DM,AKS65N410WMF-A,AKG15N072DM,AKG4N068QL-A,AKS65N1M0KM,AKT2312A,AKT30P20Q,AKG10N200SL,AKT40P12S,AKT4A235QL,AKT3B330GL,AKS65N1K9PM,AKT0142D,AKG6A110GL-A,AKG10N020TM-A,AKG6N045GL,AKT6N370KL,AKG10N022DM,AKG100N077GM,AKS70N6K0KM,AKG4N035QL,AKT20P90G,AKG4N058GM-A,AKG4N032KM,AKT15P225JL,AKG4N053GL,AKT30A15K,AKG4N024PM,AKT30A15D,AKC65D006KHH,AKT40P12G,AKT30P50G,AKG10N220KL,AKT30A15P,AKT40P10S,AKT40P10K,AKBK2A100YHM,AKT40P35G,AKBK2A100YHH,AKT3B210GL,AKB65A080WHH,AKS65N1K9FMF,AKG4N058QM-A,AKG6N120KL,AKT3B135GL,AKC65D020WBHH,AKG100N8K,AKG15N070DM,AKS60N1K8KM,AKT3N050KL,AKG10N046GL,AKS65N3K6PM,AKS60N280WM,AKG6N068KL,AKT0142P,AKG4N035PL,AKT30P40Q,AKG10N100KL,AKT3008S,AKS65N6K0FM,AKG100N8P,AKT60DN03,AKG10N080PM,AKT3A135QL,AKG10N080PL,AKT30A12G,AKT6004,AKG6N070QL,AKS65N1K9LM,AKT1A055MAU,AKC65D008KHH,AKG70N082G,AKG70N082D,AKT8290P,AK1K2FR1D4,AKG70N082P,AKC75A260NM-A,AKG10N080KL,AK1K2FR1D9,AKG70N082K,AKT30A11G,AKC65D010PAHH,AKG10N036DM,AKT7080P,AKT7080K,AKG6N035GL,AKG4N033KM-A,AKG10N096SL,AKT7080D,AKC65D006GHH,AKT2035K,AKT4008S,AKS65N6K0KM,AKT40P15K,AKG6N220KL,AKT3P050KL,AKG15N049DM,AKT3015Q,AKT2P073KU,AKT20P07,AKS65N3K6LM,AKBK2A100WHH-A,AKT30P60K,AKT40P40K,AKG3N015QL,AKG40N018G,AKT6888D,AKT6888K,AKT2008,AKCK2M017WMH,AKG10N900EL,AKT6080K,AKT6888P,AKT6080D,AKCK2D020WBHH,AKG6N042KM,AKT1815Q,AKG10N038GL,AKCK2M040WMH,AKG4N009DAM-A,AKG3N011GL,AKT30A10D,AKT2055Q,AKCK2M160WAMH,AKG10N100DM,AK650FR1D9,AKG6N036WM,AKT30A10P,AK1K2FR2D6,AKT30A10K,AKT01P55K,AKT40A14K,AKT01P55P,AKT40A14P,AKCK2M080DBMH,AKC65D010KHH,AKT3012S,AKG4N008GM,AKCK2M040WAMH,AKG100N10G,AKS65N700WMF,AKG4N012TM,AKT2065G,AKC75M015WMH,AK650FR2D6,AKG15N070PM,AKG20N107DM,AK1K2FR5D2,AKC65D020WHH,AKT4015A,AKT4013S,AKT3035G,AKT8810,AKG12N070GM,AKT3022Q,AKG15N110DM,AKG10N020TM,AKG15N072DM-A,AKG12N075PM,AKT40P30Q,AKCK2M040DBMH,AKG6N030GM,AKT4025G,AKT4P138KL,AKCK2M030WMH,AKG3N048GL,AKG15N110GM,AKT2040Q,AKS60N1K8LMF,AKS65N1M8KM,AKCK2A220NM-A,AKT6050K,AKG10N080DM,AKG4N025GM-A,AKG10A250GL-A,AKG4N008GM-A,AKCK2A400HM-A,AKT2075CQ,AKB65A050WHH,AKG4N007GM-A,AKG3N019QL,AKCK2D010WBHH,AKCK2M030WAMH-A,AKT4010G,AKS65N950WMF-A,AKG4N050QL,AKCK2M017WAMH,AKS60N300WMF,AKG10N054PM,AKT20P10J,AKCK2A040WHH,AKT4045Q,AKT6040G,AKG10N150KL,AKG10N150KM,AKS60N220WMF,AKT2050G,AKT6040K,AKG10N130QL,AKS60N370WMF,AKT3030Q,AKT30P18Q,AKT4935,AKS65N1K8LMF,AKT3030K,AKG30N011G,AKS60N680WMF,AKC65D008DHH,AKT4020G,AKT2302,AKT2301,AKT4020K,AKS65N950FMF,AKT2305,AKT20P95CG,AKT4953,AKS65N950WMF,AKT2060K,AKG6A110GL,AKT4055G,AKS65N1M2KM,AKCK2D030WBHH,AKT4P148SL,AKT3040Q,AKG10N042PM,AKG4A068GL-A,AKT30P08S,AKG40N011G,AKG3N015GL,AKG6N115GL,AKS65N1K2DMF,AKT4030K,AKT4030Q,AKT3415,AKG100N077G,AKG4N070GL,AKG4N018GL,AKB65A040WHH,AKCK2M160WMH,AKCK2M030WAMH,AKG100N042P,AKT3400,AKT3401,AKG10N150GL,AKT3404,AKG6N036DM-A,AKT2312,AKT4N210SL,AKG100N042D,AKT6020K,AKT3050Q,AKG6N040KL,AKT3050K,AKT3B220QL,AKG4N007GM,AKT3050G,AKT3407,AKG4N007GL,AKG40N025G,AKG40N013G,AKT2070Q,AKT20P65G,AKT4040K,AKT4040Q,AKC65D020DHH,AKG60N023G,AKCK2M080WAMH,AKT30P18K,AKT4040G,AKCK2M016WAMH-A,AKC65D020PAHH,AKG100N042W,AKS65N2M2KM,AKT4A160QL,AKG100N15G,AKT2080K,AKG100N15K,AKG60N036D,AKT6010Q,AKT2080G,AKG70N059K,AKS65N1M4KM,AKT3095CG,AKG70N059D,AKT40A10G,AKG70N059P,AKG60N036P,AKCK2M160DBMH,AKS65N1K2FMF,AKT3060G,AKG100N15P

选型指南 - 瑶芯微 - 2022/10/14 PDF 中文下载