【经验】如何为低功耗无线通信产品选择高功率密度易过EMI的同步DC/DC降压芯片？

时间： 2022-01-28 来源：世强

技术问答

为满足在低功耗无线通信产品（如3G，4G，WiFi等）中对电源供电系统空间尺寸的要求，现有DC/DC buck降压电源方案如下图所示。主要参数如下：V_in=5V，V_out=1.8V，I_out=500mA，f=3MHz，表面积：1.45mm*1.00mm。R_ds(up,on) = 600mΩ，R_ds(down,on)=350mΩ，功率电感：1μH。

图1：现有DC/DC buck降压电源方案原理图及PCBLayout图

现在有以下更加苛刻的要求：

1、进一步减少该部分电路所占PCB板的面积；

2、优化EMI设计；

3、进一步提高效率，降低温升。

为解决如上设计痛点，本文推荐选用圣邦微电子（SGMICRO）同步DC/DC降压芯片 SGM6032设计，V_in=5V，V_out=1.8V，I_out=600mA，f=6MHz；R_ds(up,on) = 350mΩ，R_ds(down,on)=250mΩ，功率电感：470nH。表面积(mm)有两种：2mm*2mm和1.21mm*0.81mm；基于SGM6032新方案DC/DC buck降压电源方案原理图及PCBLayout图参考如下图2所示。

图2：基于SGM6032 DC/DC buck降压电源芯片方案原理图及PCBLayout示意图

推荐理由如下：

1、低成本、小型化：SGM6032工作频率（f=6MHz）是原来的2倍，理论上可以减小功率电感的体积与感量，如典型应用所示，电感量从1μH减到了470nH，有利于优化成本，减少PCB的面积；

2、高效率：SGM6032内置的两颗MOS管，Rds(on)更低（R_ds(up,on) = 350mΩ,R_ds(down,on)=250mΩ），效率得到显著提升；

3、优化EMI：原设计方案需要通过调试EMI滤波器和优化PCB走线来实现，而SGM6032的管脚配置有利于缩小高频环路面积，主要体现在续流部分功率回路面积明显减小，EMI性能将得到改善。

最终选择SGM6032是可以满足客户使用的，而且具有一定的设计余量.且SGM6032具有良好的供货交期，可以快速支持样品和量产服务。

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描述- SGMICRO specializes in high-performance and high-quality analog and mixed-signal integrated circuits, and is committed to building a comprehensive portfolio of the highest quality analog and mixed-signal integrated circuits to address all customer needs.

型号- 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

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SGMICRO DC/DC转换器选型表

SGMICRO DC/DC转换器选型表包含包含同步整流降压转换器、AMOLED显示屏电源降压、非同步降压转换器升压、同步整流升压转换器、非同步升压转换器、电荷泵DC/DC转换器、专用DC/DC转换器和LCM偏置电源；升降压、电荷泵供电，最大输入电压60V，最大开关电流10A，内置MOS。

产品型号	品类	CH	Enable	Vcc (Min)(V)	Vcc (Max)(V)	I_OUT(mA)	Frequency (kHz)	Iq (μA)	SHDN Iq(μA)	Package
SGM6010	DC/DC Synchronous Rectifier Buck Converters	1	L	3	5.5	3000	300 to 2000	0.41	2	TDFN-3×3-10L

选型表 - SGMICRO 立即选型

SGMICRO-TI/ADI/MAXIM/MPS/SILERGY/ST等信号链电源芯片对照表

描述- 圣邦微SGMICRO与TI/ADI/MAXIM/LT/Onsemi/ST/Microchip/Nexperia/MPS/TOSHIBA/ROHM/RICHTEK/SILERGY/ABLIC/Renesas/Diodes/NXP/NJM/Infineon/Allegro 等品牌的信号链、电源芯对照表。

型号- SY8388,SN74HC541,A3981,IR44273,74AVC8T245Q,TS3A24159,TS3A24157,FAN3100,SLG88103,ADA4622-2,SLG88104,ADA4622-1,SGM2560,NA199,SGM2564,TSL6002,LMR23620,SGM48017C,LM431,FAN49103,MAX4282,SGM61220,BD9A201,74HC595,TLV3542,TLV3541,TS3A4751,TLV522,LMR23630,FAN53611,TC7SZ14FU,74LCX04,NCS21803,HCF4051,NCS21801,HCF4052,74LCX08,HCF4053,TSC214I,TLV3544,LMP2022,TSB611,NL27WZ04,SGM2588,FAN53601,SN74HC573,SN74HC574,INA333,TSU101,TSC213I,TSU102,NTMFS4C10N,UCC27531-Q1,TSU104,RT8293,74HC573,74HC574,SGM621,RT8290,SGM41600,TSB621,SGM620,SGM2572,SGM41603,SGM2571,SGM2576,SGM2575,SGM2578,SGM8T245S,RT8296,NL17SG07,SGM8557-1,TSU111,SGM8557-2,TSU112,ESD103-B1-02,INA321,TLV2242,TLV2241,SGM2205-12XK3G,ISL28118,OPA2277,BU30TD2,LM5109,BQ25619,SGM48013C,BQ25618,INA317,BQ25611,SGM62110,SGM62112,FSA4157,TPS76933,SGM2593,XB6091IS,BQ25601,TPS76950,BQ25600,SGM61230,TXS0104,TXS0102,SGM61232,SGM61234,TLV8801,TXS0101,SGM61233,74HC123,SGM5349-16,TLV62084,SGM431V,LTC2054,TPS51200,LTC2050,TLV8812,TLV8811,SGM61235,TLV8802,RT8253,BD9D323,BD9D322,AD5541,PMPB27EP,TPS54302,SGM4553YXET,LM7322,SGM8706,LM7321,SGM8707,SGM8701,MAX4664,LPV7215,SGM12UB1D2,AP2191,SGM3001,SGM42513,74LVC245A,SGM3005,TPS61099,SGM3002,SGM8276-2,TPS7A8300,SGMOP17C,TPS2553,ISL28130,TPS2556,TPS2557,SGM42403Q,SGM42553,BD6222,SGM8255B-2,ISL28134,74AHC1G08GV,TPS2551,74HC165,SGM62116,SGM62118,SGM62117,TPS3852-Q1,MAX4684,74HC164,AP2172,A3916,AP2171,TPS560430,A3918,BQ25638,SGM8709,U74LVC126,MP8676,SGM61280,MCP6V16,SGM42544,NCP718,LMX331,LMR36520,LM27761,TC7SZ32FU,SN74LVTH162373,ADM708,ADM707,SGM38042,SGM38046,TPS54340,MAX4230,TPS3823,LM2904,TC74VHC138,LM2902,LM2903,SGM8740,SGM2077A,SGM8742,SGM2077B,SGM8743,PESD5V0F1BSF,SGM41515A,MIC5209,LPV802,LPV801,SGM8748,SGM8749,NLAS44599,TPS54336,SGM40666A,SGM8746,TC74VCX16245,TPS54331,74LCX32,TPS54335,SGM41513D,SGM41513A,MCP6406,FTL75939,OPA548,SGM8957-1,MCP6402,SGM8957-2,TLV6208,SGM5223,MAX4232,TC74LCX16244,MAX4231,TPS3808,SN74LVC2T45,OPA2333P,MAX4236,SGM8551XN,TPS3840,TPS54320,SGM48018C,OPA990,RT4730,SGM41512A,SGM8745X,SN74AHC1,MAX9938,74LVTN16244,74LVTN16245,LPV821,SGM48019C,MCP6V52,MCP6V51,RT4723,OPA2210,TLV755P,SN74AC244,MCP6V54,AW2027,SGM8604-2XTDU8G,SGM8750,LPV812,LPV811,AD8534,SGM41283,SGM5353-16,AP2120,AD8539,AD8538,74LVC125,MCP6V69,74LVC126,SGM41285,DRV8313,MCP6V67,SN74LVC2G66,SGM7SZ244S,CAT4104,TS321,SGM8429C-4,AD5593R,SGM61430A,MP28373,MP5121,TMP108,74LVT16373,SGM8304,MAX40078,AD8541,74LVT16374,MCP6442,TMP103,TMP102,MP9943,MP9942,AP2112,MCP6V79,NCV890100,SGM13003A,MCP6V76,STSPIN250,MCP6V77,74LVTH125,SGM8770,AP2114,SGM38042B-1,LM2841,AD8513,AD621,AD620,NCS20034,SGM65230,NCS20032,AD623,AD8515,SGM65231,AD627,TC7SPN334,SGM13002A,SGM8477-1,SGM2035C,SGM41291,SGM2036S,MCP6V96,TUSB320,74LVC138,SGM7SZ245S,SGM8958-2,SGM41296,SN74CBT3245,MP9928,SGM41298,SGM8958-1,SGM6132,MAX4736,SGM6130,AD8532,AD8531,MAX4730,TPS3422,SGM833A,MCP6472,SGM833B,TLV1702,SGM7SZ32,SQ27403,MC74LVC74,TPS3420,TPS3421,TP2011,SGM2037H,MUX36S08,BISS0002,MC74AHC08,74LVC373A,TPS2595XXDSG,MCP6001,TPS3895,AD8502,TPS3896,TPS3897,AD8500,MCP6002,TPS3898,AP2151,SGM41282C,TPS3899,AD8506,AD8505,TLV7021,SGM832A,TP2025,MC33074,TP2021,MCP6004,MCP6006,LT7183,74LVC374A,AP2141,SN74LVC2G04,MCP6492,74LVC1G126,74LVC1G125,SGM48535B,SGM7SZ14,SGM48535A,SGM48752X,TPS2596,BU28TD2WNVX,AS179,XC6201,SGM15CB1A4,XC6206,TC7WZ04,SN74LVC2G14,MCP6022,SGM2210P,SGM7SZ08,MCP6024,SGM834A,SN74LVC2G17,MCP6021,SGM834B,SGM7SZ04,MP2497,SGM7SZ00,IRL44273LPBF,SGM48753X,SGM48754X,AD5592R,TLV61046A,TPS7A8400,SGM48753,SY8301,SGM48754,SQ24335,SGM2211S,SGM48757,ISL21080,SGM48759,SY8303,MCP6032,MCP6031,SGM48751,SGM48752,SGMNQ07430,SGM61720,TSV911,TSV912,TSV914,SN74AVC16T245,MP2490,SGM05UB1B3,LPV324,OPA4379,OPA4374,HD3SS3412,MCP6044,OPA4376,OPA2192,MCP6041,74VHC244,LMR16030,74AHCT595,APD7118,OPA2197,TPS62730,MCP6042,OPA2196,SN74AVC8T245,SN74LVC157,OPA2191,ADG509,ADG508,SGM8478-1C,FSA2457,TMUX415,TC7SZ00,LM1117,AD8599,TPS62743,TSV6192,SN74LVC125,SGM706S,SN74LVC126,RT6160,TPS76901,TC7SZ07,SGM2564A,TLV707P,NTMFS4C06N,MP2451,TS393,LMH6643,TC74VCX164245,SN74LVC138,SGM48760,SGM25662,MIC708,MCP6061,MP2460,LME49726,RT6150,MIC706,SN74AHCT86,MCP6074,TC7SH125F,STSPIN220,APD196,SGMOP07,74HC541,TC7SET08,LMC7211,BQ25890H,MAX706,MAX9119,MAX708,MCP6071,SGM2566C,74AHC573D,TC7SZ32,BU33TD2,74LVC157,YDA145,BD9G341,SGM2567S,NJMOP2277,INA828,LPV358,NCP382,NE5532,SGM2217Q,LMG1025-Q1,NCV6324,SGMNQ40430,NCV6334,SGM48536BQ,SGM21102G,74AHCT86,BGA524N6,SGM21102C,FSA2466,SGM21102B,INA818,SGM21102A,SGM05FB1E2,SN74AHC244,TLV74118,TC7SZ32F,NC7WZ04,74AVC8T245BQ,TSV991,TSV992,TSV994,SGM3851A,SGM48536CQ,TC913,74AHC244,AD8571,74AVC2T45,SGM2521A,TLV74128,SN74LVC541,AZ1117,LMV881,BU28TD2,MAX14589,TLV2316,SGM61330,SGM724,TS5V330,SGM5209-14,74LV541A,SGM3758,NJU7076,MAX4163,MAX4162,PESD15VW1BCSF,TLV74133,TPS25921A,OP213,TLV74130,SGM722,TLV2333,SGM723,SGM721,SGM8610-2,NLAS3899,OPA2140,EL5420,MAX4174,MAX4173,SGM15UB1E2,TC7SH126FU,SGM41100A,SGM61310,SKY13351,A4980,SGM41100V,SGM61306,SGM61305,SGM61308,SGM61307,SGM8262-2,TC7PZ14,SGM3795,74LCX126,74LCX125,74LVC541A,SGM3799,SA4159

对照表 - SGMICRO

【方案】30~80kW组串式光伏逆变器优选器件方案

描述- 该方案针对30~80kW的组串式光伏逆变器，采用多路BOOST升压电路，减少光伏电池组件最佳工作点与逆变器不匹配的情况，最大程度增加发电量。逆变侧采用T型三电平拓扑，开关频率支持16kHz（最佳频率点），效率最高可达98.54%。辅助电源采用1700V耐压SiC MOSFET，单端反激电源可直接应用在1000V母线系统。同时，在BOOST升压电路和逆变电路中均采用IGBT模块设计，集成度更高。

型号- MKS4J022202D00MSSD,10-FZ12NMA080NS03-M260F,0505025.MX52LEP,TFLEX HD300,BGM111,C2M1000170D,EFR32MG13P732F512GM48-C,RBN75H125S1GP4-A0,10-FY12NMA160SH01-M820F18,KT05,PS9402,SGM6022,MLX91208,28R1101-000,28R0610-000,30-FT12NMA160SH-M669F28,PS9031,LSIC2SD120E30CC,30-FT12NMA200SH-M660F08,LXXXX 15.00/05/90 4.5SN GR,28R1476-100,92ML,LX 15.00/05/90 4.5SN GR BX,MKS4J033305D00KSSD,TPCM780,RC12-6-01LS,SMBJ18CA,28R1953-000,PS9531L3,SI86XX,28B0141-000,WDU50N,SGM6032,WGM110,R5F56514FDLJ,C4D30120D,WDU70N,RBN40H125S1GPQ-A0,C2M0080120D,V23990-P629-L43,SGM2019,LSIC1MO120E0080,SID11X2K,SI8261BCD-C-IS

优选器件方案 - WEIDMUELLER,LITTELFUSE,LAIRD,SILICON LABS,WIMA,RENESAS,VINCOTECH,STANDEX-MEDER,II-VI MARLOW,WOLFSPEED,PI,ROGERS,MELEXIS,SGMICRO - V2.1 PDF 中文下载

圣邦微在光模块中应用的相关产品，涵盖TEC/APD/EML驱动、高性能运放、DCDC等｜视频

比较全面的展示了圣邦微在光模块中应用的相关产品，总的来说目前是有20--30个光模块相关产品。主要涵盖了TEC＼APD＼EML驱动这样的专用器件，高性能运放、电源相关LDO＼DCDC、负压，负载开关以及温度传感器等产品。

新产品发布时间 : 2023-11-17

SGM6032-2.5YG/TR PcbLib & SchLib & IntLib

型号- SGM6032-2.5YG/TR

CAD模型库 - SGMICRO - 2024-07-08 RAR 英文下载

SGM光模块/小基站应用解决方案 | ICT及5G通信专场世强硬创新产品研讨会

型号- SGM41285B,SGM41285A,SGM41282,SGM41283,SGM8604-X,MP3430,ADN8834,SGM8558-2,MAX15059,ADN8835,SGM41285,SGM2564,SGM2567,SGM2566,SGM8604-1,SGM8604,SGM41291,SGM8605-1,SGM66099,SGM41282C,MP8833,SGM41299,SGM41295,SGM41296,SGM41298,SGM6032,SGM6031,SGM6030,SGM2031,SGM874X,SGM660,SGM2036,SGM8558,SGM2567A

商品及供应商介绍 - SGMICRO - 2021.3.31 PDF 中文下载

SGM6032 6MHz, 600mA Synchronous Buck Regulator

型号- SGM6032-1.6YG/TR,SGM6032-0.6YTDI6G/TR,SGM6032-0.6YG/TR,SGM6032-3.0YG/TR,SGM6032-1.1YTDI6G/TR,SGM6032-1.0YG/TR,SGM6032-2.5YTDI6G/TR,SGM6032-3.3YG/TR,SGM6032-3.3YTDI6G/TR,SGM6032-2.8YTDI6G/TR,SGM6032-2.8YG/TR,SGM6032-1.0YTDI6G/TR,SGM6032-1.8YG/TR,SGM6032-1.1,SGM6032-1.5YTDI6G/TR,SGM6032-1.0,SGM6032-1.15,SGM6032-1.2,SGM6032-3.0,SGM6032-0.6,SGM6032-1.5,SGM6032-3.3,SGM6032-0.8,SGM6032-1.8YTDI6G/TR,SGM6032-1.1YG/TR,SGM6032-1.6,SGM6032-2.5,SGM6032-2.8,SGM6032-1.8,SGM6032-1.2YTDI6G/TR,SGM6032-0.8YG/TR,SGM6032-1.2YG/TR,SGM6032-0.8YTDI6G/TR,SGM6032-1.6YTDI6G/TR,SGM6032-1.5YG/TR,SGM6032-2.5YG/TR,SGM6032,SGM6032-1.15YG/TR,SGM6032-3.0YTDI6G/TR,SGM6032-1.15YTDI6G/TR

数据手册 - SGMICRO - REV.A.4 - JUNE 2022 PDF 英文下载

SG Micro's TEC controller SGM41298/9

型号- SGM6033,SGM6032,SGM41282,SGM320X4,SGM41283,SGM66052,SGM41299,SGM2564,SGM41285,SGM2566,SGM41298,SGM8604

商品及供应商介绍 - SGMICRO - WLCSP PDF 英文下载查看更多版本

1.5A TEC控制器SGM41298精准实现光模块温度控制，可实现国产替换

型号- SGM41282,SGM41283,SGM66052,SGM41299,SGM41285,SGM41298,SGM6033,SGM6032,SGM320X4,SGM5348,SGM2564,SGM2566,SGM8604

商品及供应商介绍 - SGMICRO PDF 中文下载

SGM6032 6MHz, 600mA Synchronous Step-Down Regulator

型号- SGM6032-1.6YG/TR,SGM6032-0.6YTDI6G/TR,SGM6032-0.6YG/TR,SGM6032-3.0YG/TR,SGM6032-1.1YTDI6G/TR,SGM6032-1.0YG/TR,SGM6032-2.5YTDI6G/TR,SGM6032-3.3YG/TR,SGM6032-3.3YTDI6G/TR,SGM6032-2.8YTDI6G/TR,SGM6032-2.8YG/TR,SGM6032-1.0YTDI6G/TR,SGM6032-1.8YG/TR,SGM6032-1.1,SGM6032-1.0,SGM6032-1.5YTDI6G/TR,SGM6032-1.15,SGM6032-1.2,SGM6032-3.0,SGM6032-0.6,SGM6032-1.5,SGM6032-3.3,SGM6032-0.8,SGM6032-1.6,SGM6032-2.5,SGM6032-1.8YTDI6G/TR,SGM6032-1.1YG/TR,SGM6032-2.8,SGM6032-1.8,SGM6032-1.2YTDI6G/TR,SGM6032-0.8YG/TR,SGM6032-1.2YG/TR,SGM6032-0.8YTDI6G/TR,SGM6032-1.6YTDI6G/TR,SGM6032-1.5YG/TR,SGM6032-2.5YG/TR,SGM6032,SGM6032-1.15YG/TR,SGM6032-3.0YTDI6G/TR,SGM6032-1.15YTDI6G/TR

数据手册 - SGMICRO - REV.A.3 - JUNE 2018 PDF 英文下载查看更多版本