微容科技特殊应用解决方案——LLC谐振电路的大功率电源用谐振电容

时间： 2024-08-30 来源：微容科技公众号

技术问答

微容科技通过一种独特的C0G陶瓷材料，已开发出可用于LLC谐振电路的大功率电源用谐振电容，含100V，630V和1000V三个系列；尺寸有1206和1210，容值最大可达到100nF。

大功率电源用谐振电容可广泛应用于无线充，车载OBC，太阳能光伏逆变器和AI服务器电源。典型规格如下：

1206-C0G-100nF-100V
1206-C0G-10nF-630V
1206-C0G-1nF-1000V
1210-C0G-10nF-1000V
1210-C0G-15nF-1000V
1210-C0G-22nF-1000V
1210-C0G-33nF-630V

随着新能源的广泛使用，人们对能源的转换及高效利用越来越关注，LLC谐振转换器能满足现代电源设计所提出的苛刻性能要求，因此已成为电力电子领域的热门话题。由于可以实现更高的开关频率（fsw）并降低开关损耗，这些开关模式DC/DC电源转换器通常用于大功率、高效率的应用中。比如功率大于2KW的电源，工程师们一般都会优先考虑此拓扑结构，像车载OBC，充电机，太阳能微逆变器，大功率无线充等。

LLC谐振转换器以谐振腔为基础，其中的电感和电容可在特定频率下振荡，产生谐振频率，从而高效地将直流电压由某个值转换成另一个直流电压值。它一般由4个部分组成：电源开关、谐振腔、变压器和二极管整流器（见下图）。首先，MOSFET功率开关将输入直流电压转换为高频方波。然后，方波进入谐振腔，谐振槽消除了方波的谐波，输出基频正弦波。正弦波通过高频变压器传输到变流器的次级，根据应用情况将电压调高或调低，最后二极管整流器将正弦波转换为稳定的直流输出。

LLC转换器之所以能够在极高功率下保持高效率，是因为它具有谐振特性，其核心的器件是性能稳定的电容器。在传统的LLC电路中，大量使用廉价的薄膜电容器，但是随着所需电源的功率越来越大，电路的电流越来越大，温度越来越高，薄膜电容很难适应这种工况要求，故工程师将目光转向了通流能力大，耐温更高，体积更小的陶瓷电容，而特殊的C0G材质的大功率电源用谐振电容刚好适合这种应用趋势。

大功率电源用谐振电容对于降低传输损耗，提高功率传输效率有至关重要作用，其关键的特性如ESR、纹波-温升等参数可以做到比普通2类瓷更优秀的表现，帮助谐振电路实现更高的开关频率。

微容科技大功率电源用谐振电容高清图

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目录- 公司简介和产品介绍产品型号规格及代码定义车规MLCC产品范围车规MLCC-C0G系列车规MLCC-X7R系列车规MLCC-X7S系列车规MLCC-X7T系列应用技术要求

型号- A360J0201C0G500NA,A271F0805C0G101NK,A271J0805C0G101NK,A392M0402X7R250NB,A331G0805C0G251NK,A1R2A0402C0G250NB,A100G0603C0G101ND,A0R5B0603C0G101ND,A821M0402X7R160NB,A471K0201X7R100NA,A471M0201X7R100NA,A392K0402X7R250NB,A821K0402X7R160NB,A1R8B0201C0G250NA,A3R0A0603C0G500ND,A272K0603X7R101ND,A272K0402X7R160NB,A226M1210X7S250N3,A272M0402X7R160NB,A102J1206C0G631N1,A105M0805X7S101NH,A102F1206C0G631N1,A103G1206C0G631N1,A2R7A0603C0G101ND,A2R7C0603C0G101ND,A8R2C0201C0G500NA,A1R5B0402C0G500NB,A105K0805X7S101NH,A102M0201X7R100NA,A225K0805X7R250N5,A226K1210X7S250N3,A473K0603X7R101ND,A3R0C0603C0G500ND,A102K0201X7R100NA,A225M0805X7R250N5,A122G0603C0G101ND,A180G0201C0G500NA,A180G0201C0G250NA,A683J1206C0G500N1,A5R6C0402C0G250NB,A0R6A0603C0G101ND,A332J0805C0G251NH,A561K0402X7R250NB,A104M0402X7R160NB,A227M1210X7T2R5N3,A683F1206C0G500N1,A562F1210C0G631NO,A3R6B0402C0G500NB,A1R3B0402C0G250NB,A153K0402X7R100NB,A104M0603X7R101ND,A562J1210C0G631NO,A101F0603C0G101ND,A103F1206C0G500NE,A153M0402X7R100NB,A472G1206C0G631N1,A104K0603X7R101ND,A332F0805C0G251NH,A105K0805X7R160N5,A221F0402C0G250NB,A240F0603C0G500ND,A153G1206C0G101NE,A105M0805X7R160N5,A6R0B0201C0G500NA,A6R0B0201C0G250NA,A9R0C0603C0G101ND,A103J0805C0G101NH,A332K0402X7R100NB,A6R2D0201C0G500NA,A221J0402C0G250NB,A7R5B0603C0G500ND,A7R5D0603C0G500ND,A240J0603C0G500ND,A183G1210C0G631NP,A6R0D0201C0G500NA,A222G1206C0G251NO,A332M0402X7R100NB,A563M0402X7R500NB,A8R0C0201C0G250NA,A1R1B0402C0G250NB,A151J0805C0G251NK,A103J1206C0G500NE,A8R2C0201C0G250NA,A561M0402X7R500NB,A103F0805C0G101NH,A563K0402X7R500NB,A104K0402X7R160NB,A151F0805C0G251NK,A561K0402X7R500NB,A121F0603C0G101ND,A123F1206C0G500NE,A360J0201C0G250NA,A392M0402X7R500NB,A1R0B0603C0G500ND,A121J0603C0G101ND,A123J1206C0G500NE,A223G0805C0G500N5,A392K0402X7R500NB,A823K0603X7R101ND,A182M0201X7R250NA,A823K0402X7R160NB,A272J0603C0G500ND,A102G0603C0G101ND,A471G0805C0G101NK,A823M0402X7R160NB,A333F1206C0G101NE,A6R0D0201C0G250NA,A104G1206C0G500N1,A152M0201X7R250NA,A681F0603C0G101ND,A681J0603C0G101ND,A152K0201X7R250NA,A221M0402X7R101NB,A1R6A0402C0G500NB,A272F0603C0G500ND,A333J1206C0G101NE,A221M0201X7R160NA,A223M0603X7R500ND,A3R3B0603C0G500ND,A8R0C0201C0G500NA,A471M0402X7R160NB,A1R2A0402C0G500NB,A1R2C0402C0G500NB,A1R3B0402C0G500NB,A101J0603C0G101ND,A360F0201C0G250NA,A1R6C0402C0G500NB,A223K0603X7R500ND,A823K0805X7R101N5,A471G0603C0G101ND,A221K0402X7R101NB,A823M0805X7R101N5,A272G0805C0G101NK,A471K0402X7R160NB,A390G0402C0G250NB,A472J0805C0G101NH,A221K0201X7R160NA,A682K0201X7R100NA,A8R0B0402C0G500NB,A8R0D0402C0G500NB,A5R0B0603C0G500ND,A682M0201X7R100NA,A560G0201C0G250NA,A220G0402C0G250NB,A820G0603C0G500ND,A271G1206C0G631NK,A123K0402X7R100NB,A122K0201X7R100NA,A101G0805C0G201ND,A472F0805C0G101NH,A182K0201X7R250NA,A123M0402X7R100NB,A1R0A0402C0G250NB,A272K0201X7R100NA,A1R0C0402C0G250NB,A471F1206C0G631NK,A471J1206C0G631NK,A152G0805C0G251NK,A272M0201X7R100NA,A102G0805C0G101NK,A122M0201X7R100NA,A4R0A0201C0G250NA,A683K0402X7R100NB,A0R9A0603C0G500ND,A562K0201X7R250NA,A6R8B0603C0G101ND,A1R2B0603C0G500ND,A561G1206C0G251NK,A1R6C0402C0G250NB,A3R3A0402C0G500NB,A222K0402X7R250NB,A240G0402C0G250NB,A270G0603C0G101ND,A2R0B0201C0G500NA,A1R5A0201C0G250NA,A330F0201C0G500NA,A682F1206C0G631N1,A3R0B0402C0G250NB,A182G0805C0G251NK,A1R8C0402C0G500NB,A183G1206C0G101NE,A563M0402X7R250NB,A330J0201C0G500NA,A1R0C0402C0G500NB,A3R9A0402C0G250NB,A106M0603X7T6R3NK,A472G0603C0G500ND,A2R4B0603C0G101ND,A120G0603C0G101ND,A273J1206C0G500NE,A102M0402X7R160NB,A821M0201X7R100NA,A391K0402X7R101NB,A822K0201X7R160NA,A102M0603X7R101ND,A473G1206C0G500N1,A1R5B0402C0G250NB,A682J1206C0G631N1,A273F1206C0G500NE,A822K0603X7R250ND,A391K0201X7R160NA,A1R5A0201C0G500NA,A101J0805C0G101ND,A820F0603C0G101ND,A6R2B0201C0G250NA,A104M0805X7R101N5,A820J0603C0G101ND,A106M0805X7S250NH,A7R0B0603C0G101ND,A101F0805C0G101ND,A682G0805C0G251NH,A223M0603X7R250ND,A183K0402X7R100NB,A4R0C0201C0G500NA,A822G0805C0G500N5,A361F1206C0G251NK,A681M0402X7R100NB,A5R1B0603C0G101ND,X7T系列,A222J0603C0G500ND,A122M0603X7R101ND,A431K0201X7R100NA,A0R7B0603C0G101ND,A5R1C0603C0G500ND,A682K0402X7R160NB,A221J1206C0G251NK,A6R2B0201C0G500NA,A360G0402C0G500NB,A220G0402C0G500NB,A391J1206C0G251NK,A4R3B0603C0G101ND,A471J0603C0G500ND,A271K0201X7R160NA,A3R3C0402C0G250NB,A271K0402X7R101NB,A273K0603X7R500ND,A105M0603X7R250ND,A1R6B0201C0G250NA,A122M0402X7R160NB,A152G0603C0G101ND,A152F1210C0G631NK,A474M0603X7R160ND,A153G1210C0G631NP,A471F0603C0G500ND,A152J1210C0G631NK,A682K0603X7R101ND,A222F0603C0G500ND,A391F1206C0G251NK,A683M0603X7R160ND,A4R3B0201C0G250NA,A5R6B0603C0G500ND,A1R1A0603C0G500ND,A3R6C0201C0G250NA,A183M0402X7R500NB,A1R5C0603C0G500ND,A180F0402C0G500NB,A222G1210C0G631NO,A5R6D0201C0G250NA,A8R2D0402C0G500NB,A3R6A0603C0G500ND,A272M0603X7R101ND,A1R1C0201C0G250NA,A473K0402X7R160NB,A681J0805C0G251NK,A182F1210C0G631NK,A1R8B0201C0G500NA,A474K0805X7S101NH,A821G0603C0G101ND,A475M0603X7T6R3NK,A182J1210C0G631NK,A473M0805X7R101N5,A106K0805X7T6R3NH,A240G0402C0G500NB,A8R0D0402C0G250NB,A331M0201X7R250NA,A560G0201C0G500NA,A6R2C0402C0G500NB,A390G0402C0G500NB,A221F120

选型指南 - 微容科技 - 2022版 - 2022/7/27 PDF 中文下载

【选型】LLC谐振电路中推荐超结MOSFET TPP60R160MFD，Trr仅112ns

LLC拓扑高效和高功率密度受到广大工程师的青睐，但是这种软开关拓扑对MOSFET的要求却高于以往硬开关拓扑，MSOFET体二极管的反向恢复时间（TRR）尤为重要。本文推荐无锡紫光微电子的超结MOSFET，TPP60R160MFD为例，这是20A、600V的SJMOS，开关速度快，最大导通电阻190mR，TRR典型值仅为112ns。

器件选型发布时间 : 2020-06-21

高端MLCC制造企业微容科技荣获2024年中国电子元器件TOP100企业＆AAA信用企业

微容科技扎根于高端MLCC制造产业，坚持用匠心做好产品，自主研发高端产品发展战略，大力投入研发资源，为中国高端制造产业的规模化、产业化、本土化打下坚实的基础，在今年2024中国电子元件产业峰会上荣获2024年中国电子元器件TOP100企业＆AAA信用企业。

原厂动态发布时间 : 2024-09-12

微容科技超微型MLCC选型表

提供微容超微型MLCC选型参考，覆盖0201、01005产品，0201容量范围0.1pF~4.7μF,额定电压6.3V~50V, 01005容量范围0.2pF~0.22uF,额定电压6.3V~25V。主要应用:智能手机等移动终端,芯片内置,各类集成模块,各类电子产品的高端先进系列

产品型号	品类	尺寸(EIA/JIS)	温度特性代码	静电容量(pF/nF/μF)	偏差	额定电压(Vdc)	厚度(mm)
V0R2A0105C0G250NZT	超微型MLCC	01005/0402	C0G	0.2pF	±0.05pF	25V	0.22mm

选型表 - 微容科技立即选型

【元件】聚焦高端MLCC，微容科技推出“千伏级高压与高容高温“高可靠性车规MLCC

微容科技的极限高温高容车规系列MLCC，容量可220μF,温度上限可达125度，（规格：A107M1210X7T4R0N3Z，A227M1210X7T2R5N3Z）可适用于有高算力要求的高阶ADAS系统、如智能驾驶域控制器、车身域控制器等。微容科技率先成立车规级MLCC研究院，成功完成了车规级MLCC的全系列开发，成为中国大陆地区首家可以全系列提供满足AEC-Q200车规等级的MLCC制造企业。

产品发布时间 : 2024-04-30