【经验】如何对车载仪表的DC-DC开关电源芯片模块进行选型？
DC-DC开关电源模块以PWM（脉冲宽度调制）方式把输入电压调制成各种常用的电压幅度，它具有输入电压宽、电源转换效率高、可升压可降压等特点，应用越来越广泛，因而如何对DC-DC模块进行正确选型是每一位电子工程师必须掌握的技能，笔者将基于曾经设计过的一款车载仪表为例，在备选的几款SGMICRO开关电源芯片模块中，分享如何对车载仪表的DC-DC开关电源芯片模块进行选型的实践经验。
本项目产品为车载仪表，需要对其中DC-DC开关电源降压（Buck）电路的芯片进行选型，Buck电路的特点是把输入电压转换到一个较低的电压作为输出，它由图1的几个部分组成，而其芯片模块包含开关器件、控制回路两部分。
本项目的Buck电路的输入端连接仪表的电源输入接口，输入电压Vin、Vout输出电压分别为12V和5V，输出所连的负载所需电流Iout最大为1.5A。
图1 Buck电路的组成结构
本项目Buck电路的芯片模块从以下表1的几种SGMICRO（圣邦微）DC-DC开关电源芯片模块中对比选出，包括SGM6130,SGM6132,SGM6230,SGM6232,SGM6332：
表1 SGMICRO备选DC-DC开关电源芯片模块
DC-DC芯片模块的选型主要考虑以下四方面：
（1）是否切合本项目Buck电路的输入输出电压需求。本项目输入输出电压要求分别是12V、5V，按照降额80%来算，芯片的输入输出电压需要满足15V、6.25V，可见表1的5种候选型号均符合要求。
（2）输出电流能力。我们需求的输出电流为1.5A， 按照降额80%算为1.875A，表1的芯片也均符合要求。
（3）工作频率对其它系统的影响。因为车里面有Tuner（收音机）系统，Tuner AM模式的频率为0.5MHz-1.71M ，如果开关电源的工作频率落入AM频段，将对AM的信号接收产生严重干扰，所以开关电源的工作频率必须避开AM频段并且离AM频段越远越好，从这一点考虑，开关频率为0.385MHz的 SGM6130和SGM6230其工作频率距离AM频段的下限（0.5MHz）只有0.115MHz，会对AM低频信号造成同频干扰，因此不能选择这两颗模块。
（4）考虑CI测试的要求。CI（conducted Immunity）是车载电子里的一项抗扰性测试，CI里面有一个5b测试波形，就是对产品的电源输入注入34V的噪声干扰（干扰波形见图2），在本项目里就是对着12V电源输入 进行干扰，而12V输入又连着Buck电路的输入端，因而Buck的芯片模块的输入电压上限必须大于34V才能不损坏，从这一点看，SGM6230、SGM6232满足要求，而SGM6230在（3）的分析中其工作频率不符合要求，因此只有SGM6232满足要求。
图2 5b干扰波形
综上所述，经过上面4方面对比选型后，最终选择了SGMICRO的SGM6232作为本项目DC-DC降压电路的芯片模块。
- |
- +1 赞 0
- 收藏
- 评论 77
本文由轩轩提供，版权归世强硬创平台所有，非经授权，任何媒体、网站或个人不得转载，授权转载时须注明“来源：世强硬创平台”。
正在努力加载……相关推荐
【选型】国产同步降压电源芯片P2P对标TPS54302DDCR，静态工作电流仅25μA
圣邦微的同步降压电源芯片SGM61230XTN6G/TR的静态工作电流仅为25μA，可以作为增加备选方案的计划对标TPS54302DDCR，两者的开关频率接近，具备同样的EMI降噪功能；封装上也相同。
【选型】pin to pin替换TI TPS54202的开关电源芯片SGM61230，输出电流更大，静态电流更小
某客户的扫地机器人产品中，主电源芯片使用的是TI的TPS54202，规格为28V/2A，用于4节串锂电池电源供电的一级电压处理，降压至5V后供后级电路使用。由于价格及交期的原因需要寻找一款国产的替换物料，本文给大家介绍一款圣邦微的pin to pin替换物料SGM61230，可以完美替换TPS54202。
【选型】可PTP替代MP1482的同步整流降压芯片用于USB充电器，连续输出电流高达3A
客户一款USB充电器原先用的是MP1482，输出电流是2A，现在新产品不想改版，因此需要一款可PIN to PIN替换的芯片。同时由于芯源交期延长，价格升高，客户希望寻求国产替代。基于上述情况，推荐一款圣邦微的同步整流降压芯片SGM6332。
华冠半导体（HGSEMi）半导体器件选型指南
目录- 公司简介 MOS管/比较器/存储器电路/达林顿阵列 电源管理电路 低压差稳压器 线性稳压/通用接口电路 驱动/音频电路 运算放大器/时基与时钟/逻辑电路&其他电路 微处理器 运放 接口 半导体器件概览
型号- HG9923,DS1302,TEA2025,DS1307,CD4069,XC61C-XX,CD4075,CD4073,TL494,NE556,NE555,CD4078,CD4077,75N08,HGC5615,24C128,CD4071,CD4070,KA7500,HG9261XX,FCF8563,LM3480,74HC4067,LM311,LM432,LM431,LM555,LM317,74HC32,74HC595,CD4068,CD4067,CD4066,74HC238,HG51031,CD4060,24C256,HG1201-XX,HG9921,MAX6576,HG9922,LM4580,74HC00,74HC03,HG202,74HC02,MAX3085,74HC04,HG3480,74HC07,HGV8144,HGV8142,CD4094,LM386-1,HGV8141,LM1084,LM1085,HG29100-XX,LM1086,HGC29300-XX,CD4093,74HC4046,LM1081,HG9910,LM1083,HG335,74HC14,LM79XX,HG24C08B,HG18B20,74HC573,74HC574,HGC5620,74HC4053,74HC08,HGC29150-XX,74HC4051,74HC4052,HGV8091N,CD4081,LM385-2.5,LP2954,ZNBG4000,LP2951,LMV321,LP2950,ICL8038,HG8F629,74C194,HG8F628,NE594,HGC2543,MAX7219,HG75176,HGC2549,HG2003,HGV8092N,LM29150,HG2004,LM4250,HG13085,HG3232,HG235,LM78XX,HG232,HG1051,LM358,HG1052,HGV8558,HGV8555,HGV8556,HGV8554,LM2937-XX,HGV8551,HGV8552,CA3140,HG8F630,HG8F873,AD590,74HC273,HG2593,LM1117-XX,LM321,HG485,HG2591,LP3965-XX,LM324,HG2592,LM567,13N50,LM317M,LM317L,74HC123,74HC244,74HC245,74HC125,HG8F887,HG8F883,LM317T,LM7660,LM331,HG135,HG0066,HG0065,HGC1589,LM336,HGV8965N,LM339,HGV8334,HGV8331,HGV8332,74HC132,74HC374,74HC138,74HC139,DS1990,74HC373,LM386,CD40106,LP2997,LP3965,LP2996,LP2995,XC62FP-XX,LM78L05,LM78L06,MC3845,LM78L08,LM78L09,LMV358,MC3842,MC3844,9N90,MC3843,TDA2822,LM385,HG6008,HG24C02B,HGV2774,HGV2771,HG5171,HGV2772,TDA8138,LM78M12,TDA8137,LM78M15,HGC5213-XX,74HC192,74HC193,74HC194,LM393,HG3085,ZNBG3211,HG24C256,MAX487,74HC86,MAX489,74HC165,LM78M05,HG1582-XX,MAX488,LM78M06,TL072,LM2940-XX,HGV258,LM78M08,LM78M09,TL074,50N06,28N60,74HC164,HGC1549,ULN2803,ULN2804,HG298,HG297,HG24C128,HGC1543,MAX232,TL082,HGV8094,HGV8092,TL084,HG1203-XX,HGV8091,HG293,LMC555,HG54123,LM2904,HG6570,LM2901,HGV8048,LM2902,HGV8045,LM2903,HGV8046,HGV8044,HGV358,HGV8041,HGV8042,85N06,HG3078,MAX490,HG3075,MAX491,HG3072,74HC74,HGV224,TL064,TL062,HGV221,MIC5212,HG1108-XX,HGV8064,HGV8061,HGV8062,HG24C04B,HG24C16B,DS75176,50N50,HGV8054,HGV324,HGV321,LM8002,XC62GR-XX,HG24C32,HGC29500-XX,HGV8928,TEA2822,HG75HVD3082E,HG7189,LM3916,LM78LXX,IRF830,LM3915,HG93C56,LM3914,TL064C,HGC8F630,MXA485,HG2981,HG2980,LM2954,HG93C46,LM285-2.5,HGC52XX,HG34C86,HG34C87,HGC8F629,MAX13805,MC34119,MC34118,LM2576-XX,IRF730,HG8137,CD4528,HG7169,70N06,LM78MXX,CD4520,TLC2543,HG8138A,HG1734,HG1735,20N60,HG1185-XX,HG1851,IRF840,CD4518,HG1990,CD4517,HG1991,LM285-1.2,HG7179,LM1881,24C64,CD4511,LM2931-XX,HGL297,HGL298,HG93C66,HG1509,KA7500B,LF347,LM29302,HG1501,HGC8F887,HG1621,HG75LBC184,HG75LBC182,CD4543,TL072C,TL084C,HG2803,HGL293,LF398,HG75LBC176,IRF740,3N80,CD4538,CD4541,XC62GP-XX,24C32,HG1205-XX,20N50,MAX1487,4N60,MC1403,24C08,MAX202,TL074C,TL062C,TLC5615,HG1937,LM2575-XX,HG1932,24C02,24C01,24C04,HG7012,CD1046,LM78L12,LM78L15,CD4562,HG809,LM29502,24C16,HG2571,HG2572,HG2573,HG3421,HG3420,11N90,12N60,ICL7660,93C06,HGC5219,LM2596-XX,CD1068,HGV8725N,TDA2030,75N75,HG8F676,HG8F675,LM4860,HG3423,HG1487,HG3422,HGV8061N,LM3414,HG1583,LM1117,LM4862,LM4861,HG1580,LM4863,TL082C,CD4007,LM385-1.2,HG1208-XX,TDA2003,CD4013,CD4011,HGV8062N,LM4990,LM4871,HG8F683,HG8F684,ULN2003,ULN2004,LM2574,LM2575,HGV8538,LM2576,HGV8535,HGV8536,HGV8534,HGV8531,MC34063,HGV8532,LM7905,LM809,CD4001,HG3526,HG3525,24C512,HG3524,LM35,LM7915,LM741,LM7912,HGV8968,HGV8726,HGC8F683,HGV8966,HGV8725,CD4028,HG24C512,CD4027,HGV8965,CD4025,OP07,10N80,74HC540,74HC541,ICL7106,PCF8563,ICL7107,HG4824,HGV8052N,LM4890,HGC8F676,HGC8F675,LM7805,LM7924,TD62083A,LM2596,CD4017,LM79LXX,CD4015,LM7809,LM7808,LM7806,CD4020,HGV2771N,CD4024,CD4023,CD4022,HG26C31,HG26C32,10N60,LM56,LM7815,HG56,ZNBG6000,LM7812,TD62084A,HG70XX,74HCU04,NE5532,CD4049,CD4053,CD4052,CD4051,93C66,CD4050,HG2982,HG2985,UC3845,LM4558,HG24C64,74LVC1G04,UC3842,UC3843,UC3844,LM79MXX,7N60,TLC1543,93C56,CD4040,CD4046,74HC533,74HC534,LM4560,HGC8F684
SGMICRO（圣邦微）信号链和电源管理芯片选型指南
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- SGM11108M,SGM8306-2,SGM8306-1,SGM61450,SGM3733B,SGM11108E,SGM852,SGM853,SGM851,SGM5347-12,SGM2558A,SGM2558B,SGM8261-5,SGM2564,SGM8261-1,SGM5347-10,SGM8261-2,SGM2549,SGM48017C,SGM72110,SGM8094,SGM836,SGM8091,SGM837,SGM61220,SGM8092,SGM8093,SGM835,SGM72108,SGM2553,SGM72106,SGM2555,SGM809B,SGM4519,SGM4517,SGM4518,SGM48010,SGM11106C,SGM63600,SGM41611,SGM4520,SGM4521,SGM48005,SGM8417-4,SGM8417-2,SGM4051C,SGM48000,SGM48001,SGM48002,SGM3843A,SGM61433,SGM621,SGM84782,74HC574,SGM58031,SGM620,SGM862,SGM41600,SGM2572,SGM41603,SGM860,SGM2571,SGM51622H,SGM4995,SGM4511,SGM2574,SGM4996,SGM4512,SGM4510,SGM2575,SGM51622D,SGM4515,SGM8T245S,SGM4516,SGM8250-1,SGM8250-2,SGM4514,SGM3209,SGM809,SGM8557-3,SGM8557-1,SGM8557-2,SGM803,SGM61012,SGM804,SGM802,SGM61013,SGM810,SGM811,SGM61007,SGM61006,SGM4782,SGM7237B,SGM8902,SGM8903,SGM8904,SGM4542,SGM8905,SGM4548,SGM4549,SGM3699,SGM4546,SGM4547,SGM48013C,SGM62110,SGM61020,SGM62112,AAP6153A,SGM61022,SGM62111,SGM800,SGM2596,SGM3200,SGM3206,SGM8270-2,SGM3207,SGM4535,SGM3204,SGM8270-4,SGM8T245,SGM829,SGM61230,SGM42512,SGM41664,SGM825,SGM61232,SGM823,SGM61234,SGM824,SGM891B,SGM42507,SGM42506,SGM40567,SGM4560,SGM42505,SGM4561,SGM6503,SGM4566,SGM8925,SGM6502,SGM8926,SGM6501,SGM4564,SGM8927,SGM5349-16,SGM4565,SGM6505,SGM4568,SGM6504,SGM8909,SGM818,SGM890B,SGM816,SGM42501,SGM40565,SGM42500,SGM814,SGM815,SGM812,SGM40560,SGM40561,SGM821,SGM822,SGM61235,SGM820,SGM4551,SGM4552,SGM4550,SGM4555,SGM4556,SGM4553,SGM4554,SGM51652S8,SGM8910,SGM5347-8,SGM4558,SGM11124E,SGM37863A,SGM11124F,74LVC2T45,SGM893B,SGM4581,SGM8941,SGM4582,SGM4583,SGM48521Q,SGM8704,SGM4588,SGMNQ59430,SGM8705,SGM4589,SGM8706,SGM8707,SGM8942,SGM8701,SGM8702,SGM8703,SGM12213A,SGM11210A,SGM61060,SGM2050C,SGM12UB1D2,SGM892B,SGM8276-4,SGM6510,SGM4573,SGM3001,SGM4574,SGM42513,SGM6514,SGM3005,SGM6513,SGM4578,SGM8276-2,SGM3002,SGM6512,SGM42622B,SGM8276-1,SGM3003,SGM6511,SGM4576,SGM8931,SGMOP17C,SGM8932,SGM8933,SGM6516,SGM12214A,SGM8934,SGM6515,SGM11210M,SGMNE20220,74AVC8T245,SGM3141B,SGM61030,SGM42403Q,SGM42553,SGM61032,SGM61031,74HC165,SGM62116,SGM8953-1,SGM62118,SGM8953-2,SGM62117,SGM8708,SGM8709,SGM4075-2,SGM3140B,SGM61040,SGM4075-1,SGM42544,SGM7300A,SGM7300B,SGM42541,SGM42540,SGM8951,SGM8952,SGM8710,SGM4590,SGM5200,SGM38045,SGM38042,SGM6533,SGM8711,SGM8712,SGM8955,SGM38046,SGM8956,SGM2053S,SGM8199L2,LM2904,SGM8199L1,SGM41002,SGM8968-4,SGM8968-2,LM2902,SGM8968-1,SGM8740,SGM8741,SGM8742,SGM2077A,SGM8743,SGM2077B,SGM8263-1,SGM8748,SGM8263-2,SGM8417-1,SGM8749,SGM12CB1A5,SGM8744,SGM40666B,SGM8745,SGM11104S,SGM40666A,SGM8746,SGM8747,SGM41513D,SGM41513A,SGM42561,SGM42560,SGM8957-1,SGM8957-2,SGM42562,SGM5208-14,SGM5223,SGM48018C,SGM11102F,SGM11102G,SGM41512A,SGM37603A,SGM8521,SGM8522,SGM11102S,SGM33685A,SGM5018,SGM33685B,SGM33685C,SGM8524,SGM8604-1,SGM11103E,SGM8604-5,SGM8193A3,SGM11103F,SGM8604-2,SGM8193A2,SGM48019C,SGM8604-3,SGM8193A1,SGM8193A0,SGM37604A,SGM8751,SGM11103S,SGM41007,SGM41008,SGM6332,SGM8750,FT2830P,SGM11212M,SGM41280,SGM41281,SGM41283,SGM5353-16,SGM37891A,SGM41285,SGM41286,SGM7SZ244S,SGM8542,SGM51652H8,SGM8543,SGM8301,SGM8544,SGM8302,SGM8545,SGM51652H4,SGM8541,SGM8429C-4,SGM8304,SGM8607-2,SGM37892A,SGM13003A,SGM8531,SGM8773,SGM8532,SGM8534,SGM8770,SGM8771,SGM8772,SGM8535,SGM8536,SGM8537,SGM12024A,SGM8538,SGM65230,SGM37893A,SGM65231,SGM65232,SGM8969-2,SGM8969-1,SGM13002A,SGM2035C,SGM7232,SGM9128YP,SGM41291,SGM2036S,74LVC1G32Q,SGM13001C,SGM13001B,74LVC138,SGM2581E,SGM8958-2,SGM41295,SGM13001A,SGM8958-1,SGM7222,SGM6132,SGM8554,SGM7223,SGM8555,SGM7224,SGM6130,SGM8556,SGM2581C,SGM8551,SGM7220,SGM2581A,SGM8552,SGM7226,SGM7227,SGM7228,SGM7229,SGM44599,SGM8581,SGM8713A-1,SGM8582,SGM6613A,SGM8584,SGM832B,SGM41282C,SGM832A,SGM8714B-1,SGM8924A,SGM811C,SGM5355-16,SGM7SZ19,74LVC1G125,SGM48535B,SGM89000,SGM7SZ14,SGM811B,SGM48535A,SGM48752X,SGM431VB,SGM2560A,SGM37603,SGM2560B,SGM6611C,SGM15CB1A4,SGM810B,SGM41280A,SGM8591,SGM8592,SGM48753X,SGM9203,SGM6612A,SGM8594,SGM8922A,SGM4T245,SGM48753,SGM48754,SGM48755,SGM48756,SGM51242R8,SGM48757,SCM40668,SGM813B,SGM48759,74AVC4T245,SGM8140,SGM8141,SGM48751,SGM449,SGM48752,SGMNQ07430,SGMPM21330,SGM48510,SGM458,SGM3785S,SGM37864,SGM61720,SGM459,SGM37863,SGM457,SGM8142,SGM452,SGM450,SGM451,SGM05UB1B3,SGM37862,SGM37861,SGM05CB1A8,SGM05CB1A7,SGM812B,SGM05CB1A4,74GTL2005,SGM25881,SGM447,SGM448,SGM446,SGM7SZ244,SGM8478-1C,SGM51242R4,SGM8139,SGM51242R2,SGM3705,SGM48536,SGM48537,SGM48538,SGM48539,SGM5351-16,SGM2588G,SGM2588E,SGM2588K,SGM3712,SGM3713,SGM2588C,SGM3710,SGM3711,SGM2588A,SGM48522,SGM48523,SGM48525,SGM48526,SGM48760,SGMNQ07440,SGM48520,SGM48521,SGM8557-5,SGM71XX,SGM706B,SGM460,SGM3701,SGM3700,SGM3727,SGM3741B,SGM3725,SGM3726,SGMOP07,SGM898,SGM899,SGM896,SGM897,SGM895,SGM4823,SGM2566B,SGM3735,SGM3732,SGM4822,SGM2566A,SGM3716,SGM3740B,SGM48544,SGM4806,SGM3717,SGM48545,SGM3714,SGM3715,SGM4809,SGM4807,SGM3718,SGM4808,SGM3719,74LVC157,SGM48780,SGM48540,SGM48541,SGM48542,SGM48543,SGM37898,SGM51652H,SGM51652D,SGM3720,SGM37891,SGM4812,SGM37892,SGM4810,SGM37895,SGM3749,SGM3747,SGM3748,SGM72204A,SGMNQ40430,SGM
必易微提供高性能、高可靠性的一站式芯片解决方案，应用在智能家电、工业电源、新能源领域
必易微系统应用总监文鹏先生在第20届中国家电用集成电路技术交流会上，受邀发表了题为《家电低待机辅助电源技术》的主题演讲。必易微深耕电源管理多年，凭借深厚的技术积累和一系列富有特色的创新方案，在智能家电、工业电源、新能源等辅助电源提供高性能、高可靠性的一站式芯片解决方案，展现出了独特的竞争优势。
微源半导体（LPSemi）电源芯片/音频功放/MOS管/协议芯片选型指南
型号- LP5300C,LP7854A,LP5300F,LPB1001,LP6281,LPB1002,LP6282,LP6283,LP6284,LP7800HA,LP6285,LP7800HB,LP6286,LPM9030A,LP28400A,LP28303A,LP5301A,LP6452AF,LP6270,LP3352T,LPB1009,LP6304B,LP6452AT,LPB1006,LPB1003,LP7864H,LP5300A,LP7852A,LP78073A,LPA4722,LP4069HT,LPM9040A,LP6299,LPB2105,LPB2106,LPA4732,LP6291,LP6294,LP6295,LP6296,LP6298,LP6288,LP6289,LP28058,LP6453AT,LPM8205,LP28055,LP28056,LP3803,LP78070F,LP78070S,LP3809,LP3808,LP6215A,LPM9435,LP3818C,LPA4809,LP6226A,LP64920F,LP28021,LP3811,LP3810,LP6212A,LP28013,LP28014,LP28011,LP4068T,LP6453F,LP6453A,LPA2010,LP4068H,LP4056H,LPM9926,LP6453T,LP4069T,LP6452F,LP6452A,LP4021A,LP4069H,LPB1010H,LP4069P,LP4069PT,LP28013S,LP3989,LP3988,LP6451F,LP3986,LP3985,LP28013H,LP3984,LP3981,LP3980,LP6221A,LP28014A,LP4030HA,LPA2153,LP4030HB,LPA2154,LP28014H,LP4054H,LP4030HC,LP4030HD,LP7806K2,LP4067T,LP28014S,LP6462H,LP7806K4,LP6450F,LP6498H,LP6220A,LP6498A,LP4068A,LP6498B,LP4055A,LPA2163,LPA2164,LPA2165,LPA2010S,LP28015A,LPA2160,LPA2161,LP28019S,LPA4990,LPA4871,LP4076E,LP4076H,LP105,LP6230B,LP3996,LP3995,LP3994,LP6230C,LP3993,LP3992,LP3991,LP28300C,LP28300B,LP28300A,LPA2100,LPA2101,LPA2102,LPA2103,LP7855XA,LP28009A,LP102,LP3307,LP6253H,LP3302,LP3301,LPA2108,LPA4891,LPA4890,LPA2110,LP4062A,LP3988H,LP6495*,LP2206,LP4063S,LP1115,LP4051T,LP2203,LP1113,LP2202,LP2201,LP1111,LP1110,LP6470T,LP28019B,LP3209,LP6493F,LP3204,LP4060S,LP3202,LP3201,LP3321,LP3320,LP7855SH,LP28601,LP4060A,LP7801,LP102A,LP4072H,LP3318,LP6492F,LP3317,LP3986H,LP3316,LP3315,LPA2101A,LP3310,LP28057A,LP28021A,LP6453TF,LP28021D,LP64933,LP3987H,LP4073H,LPM3413,LPM3414,LP6261H,LP3983H,LP5280S,LP3983S,LP6297B,LP6452ATF,LP3102,LP3101,LP3100,LP103S,LP6297A,LP3220,LP103Q,LP3350,LP6261S,LP4070E,LP78080,LP6490F,LP3219,LP3218,LPM3407A,LP3211,LP7811,LP6260S,LP7810,LP7813,LP7815,LP62610,LP78070,LP78071,LPS100,LP6260M,LP4080H,LP3981H,LP3368,LP28011H,LP3366,LP3120,LPW5210,LPW5211,LPA2173,LPA2174,LPW5213,LP5300,LPA2175,LP5301,LPA2176,LP5302,LP5303,LP3981S,LP5304,LP5305,LP5306,LP5308,LP5309,LPA2171,LPA2172,LP3982S,LP28014SE,LP3354,LP3353,LP3352,LP3110,LPW5220,LP3351,LP28013A,LP7804T,LP4081H,LP7801TE,LP28021S,LPA2110A,LP28021H,LP7855MF,LP3384,LP28021HD,LP7862,LP7861,LP7864,LP7863,LP28058F,LP7866,LP3390,LP7865,LP7867,LP1115B,LP1115A,LP3980H,SUPER22,LP6280A,LP7860,LP3383,LP7850,LP3382,LPW5201,LP7853,LP6400,LP7802T,LP7852,LP3380,LPW5203,LP7855,LP7855MH,LP6402,LPW5204,LP6403,LP6280S,LPW5206,LP7856,LP3980S,LPW5207,LP7859,LP3993B,LPW5208,LP7858,LPW5209,LP5308M,LP4020,LP7801T,LP6310,LP6312,LPM9007,LP7801L,LP6291H,LP7801D,LP3990A,LPA4722A,LP7800S,LP6301,LP6401F34,LP6302,LP6303,LP7812B,LP7812C,LP7812A,LPM9030,LPM9031,LP4040,LP6460,LP6461,LP6342,LP6453,LPM9026,LP6212,LP6454,LPM9022,LP6216,LPM9024,LP6218,LP1111A,LP7859A,LPM9021,LP3201S,LP4030,LP6450,LP5240,LP6451,LP5241,LP6452,LPM9015,LP6201,LPM9017,LPA8003S,LP7810A,LPW5202XX,LP53050,LP4060,LP6480,LP4061,LP6240,LP6482,LP4063,LP6483,LP4065,LPA2104A,LPM9050,LP4055,LP4057,LP6235,LP6236,LP4059,LP6238,LP6239,LP7857M,LP5305A,LPA2104S,LPM4953,LP7857H,LP5305F,LPM9040,LP5380,LPM9042,LP6470,LP4051,LP28052H,LP6471,LP4052,LP4053,LPM3401A,LP6222,LP6223,LP6224,LP6225,LP28053A,LP6226,LPM9033,LP6229,LP5304A,LP5304C,LP7820A,LPM3406,LPM3407,LP4081,LP4082,LP6260,LP6261,LP4077,LP7855S,LP6255,LP6497,LP4078,LP6256,LP3220S,LP6257,LP6401F24,LP7855M,LPM9029C,LPM3400,LPM3401,LP5303A,LP3100A,LP5301F,LP4070,LP6490,LP5280,LP6491,LP4072,LP6492,LP4073,LP6493,LP4074,LP6252,LP6494,LP4075,LP4076,LP6496,LP4066,LP4067,LP7854S,LP4068,LP4069,LP7854H,LPM2301,LP7800K4,LP5314A,LPM2302,LP7800K2,LP3367A
拓尔微电子（TOLL）电源管理/马达驱动/电池管理/接口控制/信号处理/汽车应用芯片选型指南
描述- 拓尔微电子股份有限公司成立于2007年4月，是一家专注于高性能模拟及数模混合芯片研发、设计与销售的集成电路设计企业，致力于向个人消费电子、智能家居、网络通信、工业控制、汽车电子等下游领域提供高性能芯片及模组产品。历经十余年的研发积累与市场拓展，公司规模快速增长，先后在杭州、深圳、厦门、广州、无锡、成都和台湾等地建立分支机构及研发中心。
型号- TMI4056,TMIS23601,TMI7321,TMI7320,TMI4054,TMU003,TMI86881HAX,TMI7431Q,TMI85120S,TMI7206,TMI8423,TMI8421,TMI9743A,TMI8420,TMI6240,TMI6241,TMI86880HCX,TMI86880HDX,TMS8020XX,TMI31601,TMI4054H,TMI8549,TMI8548,TMI9404,TMI6013,TMI6011,TMI6262AL,TMI86881HCX,TMI5122D8,TMI6038D,TMI3255TF,TMI6038C,TMI6263CH,TMI9408,TMI9405,TMI82H05D-Q1,TMI8118S,TMI9410,IM5200,TMIS7701C,TMI86881HBX,TMI7431E,TMI4056D,TMI3255SF,TMI3244TF,TMI8140-Q1,TMI4056H,TMI8208,TMI9416,TMI4056E,TMI3113H2D,TMI36010,TMI6038,TMI6263AL,TMI4101AN,TMI6036,TMI7003,TMI6263AH,TMI8420Q,TMI33431E,TMI87301-Q1,TMI6030,TMI85303,TMS8010,TMI6036D,TMI6036A,TMIS7702,TMIS7701,TMI36021,TMI8720PD,TMI8100,TMI9431,TMI36020,TMI8340,TMI86881HDX,TMS8010N,TMI85303-Q1,TMI6263BH,TMIS1296,TMI8260SP,TMI3181A,STI8070C,STI8070D,STI8070A,TMIS23501,STI8070B,TMIS23502,STI8070G,TMI8113,TMI6056,STI8070E,TMI3252SH2,TMI36030,TMI3181D,STI8070F,TMI36031,TMI8110,TMI8230,TMI6050,TMI5130A,TMI3408D,TMI3408C,TMI3408F,TMIS1025,STI3453,TMI8118,TMI8123,TMI6240I,TMI7003C,TMI8122,TMI7003B,TMI9640A,TMI8120,TMI8722-Q1,TMI6240S,TMI3252SHF,TMI8116-Q1,TMI85121S,TMI6241A,TMI6241D,TMI86881MCX,TMI86880LDX,TMI97051,TMS8609D,TMS8609B,TMI3252TH,TMS8609F,TMS8609E,TMI6411-XXDA,TMI7608,STI3470,TMI3125,STI3472,TMI32520,TMI5302,TMI3253,TMI8180A,TMI3131,TMI3252,TMI3494,TMI6401,TMI3255,TMI2286,TMI9703E,TMI3493,TMI2282,TMI8180G,TMI3492,TMI3252TF,TMI2284Q,TMI86880LCX,IM2406A,TMI3252T,TMI86881MAX,TMI86880LBX,TMI86881MBX,STI3408B,TMI3252SH,TMI32530,TMI3252S,TMI3256,TMI8723N,TMI3259,TMI6402,TMI3258,TMI3278H,TMI2294,TMI86881LCX,TMI97151,TMI3253SHF,TMI8940D,IM2405A,TMI86620LXS,TMI86620LXT,TMI2286D,TMI36010S,TMI8837,TMI3253S,TMIS7722,TMI3267,TMI3253T,TMI9713A,TMI8722,TMI8721,TMI9713C,TMI4101DN,TMI9713E,TMI5330,TMS8007,TMI3273,TMS8008,TMI3388C,TMI3255B,TMI3388B,TMS8003,TMI3388A,TMI86881LBX,TMM8726-Q1,TMI86881MDX,TMI3352A,TMI86881LAX,TMIS1196,TMI3278,TMI3254S,TMI8723,TMI3286,TMI5102,TMI7303B,TMI4012DD,TMI6267AH,TMI7303A,TMI8876Q,TMI4012DC,TMI86820LXS,TMI7327B,TMI4012DF,TMI5101,TMI7327A,TMI4012DE,TMI3281,TMI7303D,TMI4012DB,TMI7303C,TMI4012DA,TMI3280,TMI9290A,TMI4011C,TMI4012DT,TMI4011B,TMI4012DS,TMI4011A,STI3452HFI,TMI7205B-Q1,TMI4012DP,TMI4012DR,STI3508C,TMI4012DQ,TMI4012DL,TMI4012DK,TMI4012DN,TMI4012DM,TMI4012DH,IM2403A,TMI4011E,TMI4012DJ,TMI4011D,TMI4012DI,TMI62033,TMI9713,TMI5111,IM2413N,TMI3171,TMI4021,IM2413P,TMI86881LDX,TMI4022C,TMI4010A,TMI4022B,TMI4022A,TMI2605S,TMI3254SF,IM6001,TMI36031R,TMI86820LXT,TMI4022D,TMI7325B,TMI8876,TMI85120,TMI85121,TMI7301,TMI4156,TMI5120,TMI9608,TMI8870,TMI3181,TMI2293Q,TMI3286B,TMI86880HBX,TMI3273T,TMI36030R,TMI3253TH,TMI8460SP,TMI9723,TMI7302A,TMI7326B,TMI7326A,TMI6220,TMI7302D,TMI3253TF,IM2423P,TMI2282L,TMI86880HAX,STI3452HF,TMI3253SH,TMI8262Q,IM2406,IM2404,IM2405,IM2403,STI3508CB,TMI3408,TMI31601F,TMI32120,TMI5700,STI3411A,TMI4056DH,TMI86630LXT,TMI86630LXS,TMI8512-Q1,TMI6809,TMI6411-XXDA-Q1,TMI6803,TMI3411,TMI3410,TMI3412,TMI4056EH,TMI7604R,TMIP3120,IM7002X,TMI8420-Q1,TMI3421,TMI6810,TMS8525,TMI9130I,TMI9130E,TMI9130F,TMI31602F,STI8036B,TMI31602H,TMI3113H2,STI3453FI,TMI2283QE,TMI86820HXT,TMI86820HXS,TMI3256B,TMI6411-XXTB-Q1,IM2605,TMI3341C,IM2603,IM2600,TMI8260DP,TMI9130C,TMI9130D,TMI86880MAX,TMI9130A,TMI9130B,TMI32560,TMI32561,TMI8D100,TMI8837S,TMI3255S,TMI8150B,TMI3255T,TMI3451,TMI3257I,TMI3112H,TMI3331,TMI2243,TMI3452,TMIP3130,TMI3273TF,TMI3112F,TMI3342B,TMIS1857,TMI86810S,TMI86810T,TMI3459,TMI3256S,TMI33421,TMI3455,TMI2245,TMI3244T,TMI3341,TMI3101,TMI3343,TMI3342,TMI86810D,TMI3113B,TMI3343B,TMI3331A,TMI3101C,TMI3113D,TMI3343C,TMI3101D,TMI3125F,TMI3343D,TMI8260FP,TMI86880LAX,TMI8122-Q1,TMI86880MCX,TMI33431,TMI2242D,TMI3108,TMI2242E,TMI8913,TMI3344,TMI8920,TMI3351,TMI6402T,TMI3112,TMS8601,TMI88225,TMI4151AN,TMI86880MDX,TMI86880MBX,TMI3359,TMI2243D,TMI3113,TMI8921,TMI8135,TMI6411-XXTA,TMI6411-XXTB,TMI8130,TMI6411-XXTD,TMI6411-XXTE,TMI6411-XXTF,TMI6056D,TMI39610,TMI6250I,TMI8264,TMI8263,TMI8262,TMI8261,TMI8140,STI9287C,STI9287B,TMI8038,TMI8037,TMI6283H,STI3452I,TMI8152,TMI8151,TMI8270,TMI8721-Q1,TMI4151DN,TMI6260C,TMI6260D,TMI6030D,TMI6030C,TMI6260A,TMS8203E,TMI8160,STI8036,TMI6261C,TMI6261B,TMS8201E,TMIS7702C,TMI8230S,TMI86600XT,TMI8720-Q1,TMI86600XS,TMI97153A,TMI97153B,TMI97153C,TMI3411P,TMI3411B,TMI3108K,TMI71301,TMI34595,IM2423,TMF82124-Q1,TMI7608S,TMI7608R,TMI4012SC,TMI4012SB,TMI4012SE,TMI4012SD,TMID23513,TMI4012SA,TMI5700A,TMI6050B,TMI32080,STI9287CA,STI3508,TMI8085,TMI6201A-XX,IM2415,TMI4012SF,TMI9290,STI9287,TMI5810,TMI2283QED
艾创微（AICHUANGWEI）电源管理/信号链/电机驱动/宽禁带半导体功率芯片选型指南
描述- 艾创微成立于 2015 年，总部位于合肥市肥西经开区，专注于研发高性能模拟及数模混合芯片，为客户提供高效能、低功耗、品质稳定的集成电路产品,同时提供一站式的应用解决方案和现场技术支持服务。公司研发的产品包括车规级电源管理芯片、车规级信号链芯片、车规级电机驱动芯片及宽禁带半导体功率芯片，主要应用于新能源及新能源汽车、智能电网、新一代智能家电等领域。
型号- ICW4008A,ICW3102,ICW6216,ICW4008B,ICW2540A,ICW6215,MD57XX,MD8933,ICW1235-Q1,MD7209,MD7208,MD53XX,ICWM12020001,MD957X,MD76XX,ICWM12020002,ICWM12008001,MD7682,ICW4008S,ICW103A,ICW2802,ICW2801,MD75XXH,ICW2006,ICW6207,ICW4009A,ICW6208,ICW875X,ICW2540,MD0001,ICW5015,ICW8249,MD116X,MD7620A,ICW1215-Q1,ICW5013,BC100S,ICW128S,MD132X,ICW847X,ICW5012,MD75UXX,ICW5010,MD88XX,ICW1221-Q1,MD7672,ICWM12040001,MD7671,MD84XX,MD7673,ICW206-7V,MD78UXX,ICW1232-Q1,ICW100,ICW2139,ICW78XX,ICW2199,MD9927,ICW1233-Q1,ICW5069,ICWH06530001,ICWH06530002,MD52XX,MD75XX,MD71XX,MDZ12XX,MD73RXX,MD162X,MD7612XX,ICW37170,ICW4007,ICW78M15,ICW3485E,ICWM12016001,ICW1261-Q1,MD73SRXX,ICW3104-N,ICW6205,ICWM17065001,ICW2001,MD7680XX,ICW6206,ICW845X,ICW6204,ICW2003,MD7218,ICW6201,ICW3490E,ICW212GS,ICW7135,ICW1238-Q1,MD7219,ICW6200,ICW6510T,MD8941,ICW3052,MD8942,SRDXXX4561096,MD83XX,ICW206,MD53RXX,ICW209,ICW3232E,ICW2358,ICW78M24,ICW0310,ICW7741,MD113X,ICW7188,ICWM12004001,ICWM12004002,ICW203H-7V,MD70XX,SRDXXX31304121,MD51XX,ICW3116B,MD75RXX,ICW0308,ICWM12004003,ICWM12002501,ICW3669F,ICW1231-Q1,ICW0306,MD71XXH,ICW1117,ICW841X,ICW1236-Q1,MD6127CXX,MD3156XX,MD73SQXX,ICWH06506501,ICW37200,ICW5178,ICW5176,ICW5012-N,ICW5177,ICW5175,ICW3151,ICW3150,MD82XX,ICW3783A,MD151X,ICW32S16C,ICW864X,ICW3126,MD7616-30,ICW1214-Q1,ICW208AD,ICW28010W,ICW836X,MD58XX,ICW3122,ICW1237-Q1,ICW3121,ICW8651,MD77XX,ICW2150,ICWH06513501,MD53UXX,MD7660,MD73XX,ICW206-8V,MD53XX-1,ICW3667A,ICW3667B,ICW37130,ICW1218,ICW2545,MD73XXH,ICW3118,ICW4009B,ICW8702,ICW2450A,ICW1076,MD85XX,ICW203H-8V,ICW8020,ICW203H,ICW3115B,ICW118A,ICW5947,ICW3128,ICW2159,ICWM12032001
ETEK（力芯微）电源IC/信号&传感IC/显示屏&LED驱动/逻辑IC&MOSFET/车规产品选型指南
描述- 力芯微是一家主营电源管理IC的芯片设计公司，总部位于江苏无锡，周边配套了完整的芯片产业链，是国家重要的集成电路产业化基地。力芯微以市场需求和技术前沿趋势为导向，持续研发全系列、高品质的电源管理芯片，并持续布局信号链芯片等其他类别产品。目前，基于在手机、可穿戴设备等应用领域的优势地位，力芯微已经成为消费电子市场主要的电源管理芯片供应商之一，主要客户为三星、小米、LG、海尔等知名厂商。
型号- ET74AUP1G17,ET95152,ET85904,ET3138,ET74AUP1G14,ET3137,ET9919B,ET9611Y,ET1637,ET74LVC1G14,ES6V3DPX,ET74LVC1G17,ET85902,ET8141,ES12DFX,ET85901,ET74HC04,ET74AUP1G07,ET64B16V,ES30P4N3HX,ET1624,ET74AUP1G08,ET74AUP1G02,ET1620,ET74AUP1G04,ET9902,ET516XXYB,ET74AUP1G00,ET9918B,ET64C16YAM,ET8134,ES55DFHX,ES15DFCX,ET74HC573,ET81311,ET20135,ET9580,ET93010A,ET8131,ET8132,ET74HC14,ET20170,ET74AUP2G07,ET6625,ET6623,ET64B16VAM,ET74AUP2G04,ET74AUP1G32,ET74AUP2G02,ES332R2PA,ET74AUP1G34,ET2016B,ET1616,ET5A5ADJZB,ET2016C,ET8123,ET74LVC1G32,ET2016A,ET74LVC1G34,ET74LVC2G02,ET85002,ET82099,ET85001,ET74LVC2G04,ET6622,ET6621,ET74LVC2G07,ET85004,ET7H2XX,ET8121,EM02N08H,ET4557,EM02N08F,ET3712A30XX,ES03DMSBHX,ET2016,ET9612Y,ET74HC238,ET5HAXX,ET9563,ET74LCX244,ET6416Y,ET5014AM,ET633XXYB,ET74LVC2G14,ET74HC595,ET20155,ET74LVC2G17,ET5B0XX,ET5H1XX,ET9562,ET64C16Y,ET5914,ET3856,ET64C16V,ET6326,EMQ40N03T1,ET5H6ADJ,EM02N70M,ET5917,ETQ6H3XX,ETQ8134M,EMR13N03M,ET9523C,ET85304,ET3176,ET85302,ET85301,ES05DMSBX,ET48751,ET48752,ET3172,ET3715A30,ET5904,ET74AUP2G17,ET95101,ETK6201,ET74AUP2G14,ET3720,ET5907,ET6224R,ET74LVC2G34,ET9383Y,ET3167,ET3168,ET2016X,ET3166,ET5223,ETQ5A0XX,ES26P4M,ET3164,ET3161,ET20175,ET20176,ET3713,ET515DXXYB,ET74LVCH8T245,ET1651,ET3159,ET5A0XXYB,ET9818,ET3719,ET9819,ET3716,ETQ6H2XX,ET20176HY,ET9513C,ET8280,ET3157,ET5014L,ES15DUCFM,ET3153,E33DFB,ET3718AXX,ET634XXYB,ET5H7XX,ET1640,ET5H6ADJAM,ET74AUP2G34,ET553XX,ET6408Y,ES79DFVXM,ET358,ET9650M1,EMQ40DN03T1,ET1117,ET5A2ADJZB,ET3895,ET3896,ET93011,ETMC3021,ET8307,ES052R2PL,ES09DFX,ET9631,ET74HC165,ES4850DFHX,ET74HC164,EM08DN12Z,ET9515,ET9640A,ET85502,ET85501,ETM3401,ET8215AM,EM03N06FX,ET85504,E25DFB,ET3712A45BDCLS,ET4857,CD1628,ET5A0ADJ,ES334RTBP,ET20176HAM,ET553ADJ,ES05DUCFM,ET2016XAM,ET74LVC1G126,ET74LVC1G125,ET631XXYB,ET8528,ET5C108,ES24P4N3,E05DFBH,ES05DPX,ET6226,ET1210,ET4712A70,ET5014,ET6312B,ET74AUP1G126,ET74AUP1G125,ET5H5XX,ET1206,ET9555M,ET7429,ET1202,ET551XX,ET6H3XX,ET20176H,ET1629A,ET1629B,ET9381Y,ET7304,ET1629C,ET7303,ET3RL02,ET7302,ES334RTPH,ET2095,ET533XXAM,ET820982,ES3314DUCFBM,ET82097X,ET74HC245,ET542XXY1B,ET6280,ET3148A,ET7H1XX,ET6034AY,ET3712A45BSCLD,ET9792,ET533XX,ET5H2XX,ET7805,ET515XXYB,ET540XXY1B,ES45DPF-BHX,ET3565,ES30P4N3LX,ET531XXYB,ES20DFX,ET8210,ET74HC138,ET7480,ET8215,ET8216,ET9668,ET2110,ET6038,ET6037,ET9639L,ET3562,ET2102,EMR12N03T1,ET2468,EM06N30M,ET2467,ET2104,ET8330A,ES26P4NA,ET5228H,ETQ74LVCH8T245,ET8202,ET8203,ET85601,ET632XXYB,ET3158A,ET85604,ET6144,ET6143,EM03N09FX,ET85602,ET6142,ET557XX,EMR15N03M1,ET6935,ET6934,ET74LVCSZ17,ET7228,ET9528,ET9640,ET7460,ET74LVC1G00,ET9540CL,ET6218R,ET74LVC1G02,ES10DPXM,ET74LVC1G04,ET6930,ET5A3ADJZB,ET536XXYB,ES45D3HP,ET74LVC1G07,ET74LVC1G08,ET7222
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
详细分析BUCK电路的演变过程
对于BUCK电路的应用，合肥艾创微电子科技有限公司的ICW4007、ICW4008和ICW4009产品都是高效率高精度的非隔离降压开关电源恒压控制驱动芯片，分别可以满足3.3V/0.4A、5V/0.4A和12V/0.4A的应用需求。
【产品】高集成度、高效率的Buck LED功率开关KP1054XVP，采用SOP-4封装
必易微电子的KP1054XVP系列是高度集成的功率开关，带有准谐振降压（QR-Buck）恒流（CC）控制芯片，适用于LED照明应用。KP1054XVP在单个芯片中集成了500V功率MOSFET，600V 超快恢复二极管和功率控制器。该IC还集成了无需VDD电容的高压LDO电源电路，以及无需辅助绕组的变压器消磁电路。芯片采用准谐振控制模式，从而实现高效率。
【应用】可输出负压的国产BUCK-BOOST电源芯片SGM660助力400G光模块，满足小型化需求
目前400G光模块的PCB空间非常紧张，器件选型时优先考虑封装能否放下。圣邦微电子的电源芯片SGM660封装为WLCSP-0.85*1.25，且外围器件只有一个电感和两个电容，电路较简单，适合小型化设计；开关限流点也有450mA/620mA可选，输出电流能力完全满足需要。
昱盛电子（Viva）音频/电源集成电路选型指南
描述- 昱盛电子於高性能效率之电源升降压管理芯片、高功放之音频功放芯片已深耕20馀年。最专业的研发精英针对变化快速的市场,能最快提出符合客户需求的方案。
型号- VP3675TSG28,VSD383X SERIES,VP3481,VP3482,VP3681,VP3682,VP3881,VSD385X SERIES,VA2205,VA2207,VA2208,VSD395X,VM6501,VM4003,VSD383X,VMP1024,VP3803,VA2236,VP3605,VP3804,VP3606,VMP1022,VSD391X,VP3607,VA2110,VP3608,VP3609,VA9105,VSD391X SERIES,VM8001,VM8002,VM6505,VM6504,VM4005,VM6502,VD8201,VSD393X SERIES,VD8401,VD8202,VSD395X SERIES,VA2239,VM3001,VMP1012,VM3002,VMP1018,VA2101,VM3004,VS8601,VS8201,VS8401,VP3186,VP3187,VMP1009,VMP1008,VP3675QNG28,VA2213,VMP1002,VSD393X,VMP1001,VMP1006,VM6001,VMP1005,VMP1004,VD8901,VA9201,VD8102,VD8101,VD8103,VD8305,VA2221L,VP3675,VP3478,VA2218,VSD385X
电子商城
现货市场
服务
针对电子系统中的详细传热和流体流动模拟进行优化，可准确分析复杂的两相冷却组件（如热管/均热板），量化利用率，并警告是否干涸。
实验室地址： 深圳 提交需求>
提供语音芯片、MP3芯片、录音芯片、音频蓝牙芯片等IC定制，语音时长：40秒~3小时（外挂flash），可以外挂TF卡或U盘扩容。
最小起订量： 1pcs 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
我要提问
查看全部1条回复