Article(id=1195432024178733707, tenantId=1146029695717560320, journalId=1189645257101713411, issueId=1195432021267890320, articleNumber=null, orderNo=null, doi=10.19822/j.cnki.1671-6329.20240210, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1762942804617, onlineDateStr=2025-11-12, pubDate=1738684800000, pubDateStr=2025-02-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762942804617, onlineIssueDateStr=2025-11-12, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762942804617, creator=13701087609, updateTime=1762942804617, updator=13701087609, issue=Issue{id=1195432021267890320, tenantId=1146029695717560320, journalId=1189645257101713411, year='2025', volume='', issue='2', pageStart='1', pageEnd='62', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762942803923, creator=13701087609, updateTime=1762945377007, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1195442813602152532, tenantId=1146029695717560320, journalId=1189645257101713411, issueId=1195432021267890320, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1195442813606346837, tenantId=1146029695717560320, journalId=1189645257101713411, issueId=1195432021267890320, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=40, endPage=43, ext={EN=ArticleExt(id=1195432024388448909, articleId=1195432024178733707, tenantId=1146029695717560320, journalId=1189645257101713411, language=EN, title=Comparison Analysis on 48 V System Power Conversion Schemes, columnId=null, journalTitle=Automotive Digest, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To enhance the stability and reliability of automobiles while ensuring their safe and efficient operation, a comparative analysis is conducted on 5 representative 48 V power system solutions: PWM controller, switching power supply buck converter, switching power supply controller, LLC transformer, and entry protector power supply scheme. The solutions are thoroughly compared in terms of integration, complexity, cost, and other relevant factors. A systematic evaluation of their advantages, disadvantages, and application scenarios is performed to address the functional requirements of different vehicles in various operating environments. This analysis serves as a valuable reference for automotive researchers and developers in selecting the appropriate power conversion scheme and aligning it with vehicle models based on actual product application needs.
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为了提高汽车稳定性与可靠性,保障汽车安全高效运行,对比分析了5种代表性48 V电源系统方案:PWM控制器电源方案、开关电源降压转换器电源方案、开关电源控制器电源方案、LLC变压器电源方案和入口防护电源方案。从集成度、复杂度、成本等多方面深入对以上方案进行对比,系统地分析了其优缺点和应用场景,以满足不同使用环境下不同车辆功能要求,为汽车研发人员根据实际产品应用需求选择合适的电源转换方案与车型进行匹配提供参考。
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2019(1):10-15., articleTitle=48 V系统技术发展概述, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1195653476580634766, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, xref=null, ext=[AuthorCompanyExt(id=1195653476589023375, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, companyId=1195653476580634766, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=Global R&D Center, China FAW Corporation Limited, Changchun 130013), AuthorCompanyExt(id=1195653476597411984, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, companyId=1195653476580634766, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=中国第一汽车股份有限公司研发总院, 长春 130013)])], figs=[ArticleFig(id=1195653478413545651, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=EN, label=null, caption=null, figureFileSmall=VDQ6UiT/Ivhd0O8lSd8bcQ==, figureFileBig=7Kes5u77CcUm5fSDg4KhOg==, tableContent=null), ArticleFig(id=1195653478480654516, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=CN, label=图1, caption=
PWM控制器电源方案示意, figureFileSmall=VDQ6UiT/Ivhd0O8lSd8bcQ==, figureFileBig=7Kes5u77CcUm5fSDg4KhOg==, tableContent=null), ArticleFig(id=1195653478593900725, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=EN, label=null, caption=null, figureFileSmall=0QC/8OAER40ZbvuABQXooQ==, figureFileBig=wc4Qt7x5pkgshH5apvWTBw==, tableContent=null), ArticleFig(id=1195653478665203894, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=CN, label=图2, caption=
开关电源降压转换器电源方案示意, figureFileSmall=0QC/8OAER40ZbvuABQXooQ==, figureFileBig=wc4Qt7x5pkgshH5apvWTBw==, tableContent=null), ArticleFig(id=1195653478732312759, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=EN, label=null, caption=null, figureFileSmall=baId8FeuqGSSzn6f102/lA==, figureFileBig=VwQeWZqxPw467A4TNcyWRw==, tableContent=null), ArticleFig(id=1195653478795227320, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=CN, label=图3, caption=
开关电源控制器电源方案示意, figureFileSmall=baId8FeuqGSSzn6f102/lA==, figureFileBig=VwQeWZqxPw467A4TNcyWRw==, tableContent=null), ArticleFig(id=1195653478862336185, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=EN, label=null, caption=null, figureFileSmall=9Qn+SfOEDKxmRxULxXpibA==, figureFileBig=TCRB6r8sMQKNnP55OfH41g==, tableContent=null), ArticleFig(id=1195653478937833658, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=CN, label=图4, caption=
LLC变压器电源方案示意, figureFileSmall=9Qn+SfOEDKxmRxULxXpibA==, figureFileBig=TCRB6r8sMQKNnP55OfH41g==, tableContent=null), ArticleFig(id=1195653479025914043, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=EN, label=null, caption=null, figureFileSmall=ymnNWx3na2VUtiP4Qb+0ww==, figureFileBig=e5XJKsXcwtNkyIda+r2kfQ==, tableContent=null), ArticleFig(id=1195653479084634300, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=CN, label=图5, caption=
入口防护电源方案示意, figureFileSmall=ymnNWx3na2VUtiP4Qb+0ww==, figureFileBig=e5XJKsXcwtNkyIda+r2kfQ==, tableContent=null), ArticleFig(id=1195653479151743165, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | PWM控制器 电源方案 | 开关电源降压转换器电源方案 | 开关电源控制器 电源方案 | LLC变压器 电源方案 | 入口防护 电源方案 |
| 复杂性 | 困难 | 容易 | 容易 | 困难 | 中等 |
| 集成度 | 低 | 高 | 较高 | 低 | 中等 |
| 带载能力 | 强 | 弱 | 一般 | 强 | 一般 |
| 成本 | 中等 | 低 | 低 | 高 | 低 |
| 场景 | 存在外部MCU驱动,负载电流需求较大(0~50 A) | 适合小巧控制器,功能简单,负载电流需求很小(0~3 A) | 适合小巧控制器供电,负载电流需求中等(0~20 A) | 需要驱动高功率负载,例如暖风、座椅加热等超大功率负载(0~200 A) | 后级芯片耐压值较低,需要防护电路保护 |
), ArticleFig(id=1195653479248212158, tenantId=1146029695717560320, journalId=1189645257101713411, articleId=1195432024178733707, language=CN, label=表1, caption=
5种48 V系统电源方案对比分析
, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | PWM控制器 电源方案 | 开关电源降压转换器电源方案 | 开关电源控制器 电源方案 | LLC变压器 电源方案 | 入口防护 电源方案 |
| 复杂性 | 困难 | 容易 | 容易 | 困难 | 中等 |
| 集成度 | 低 | 高 | 较高 | 低 | 中等 |
| 带载能力 | 强 | 弱 | 一般 | 强 | 一般 |
| 成本 | 中等 | 低 | 低 | 高 | 低 |
| 场景 | 存在外部MCU驱动,负载电流需求较大(0~50 A) | 适合小巧控制器,功能简单,负载电流需求很小(0~3 A) | 适合小巧控制器供电,负载电流需求中等(0~20 A) | 需要驱动高功率负载,例如暖风、座椅加热等超大功率负载(0~200 A) | 后级芯片耐压值较低,需要防护电路保护 |
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