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坐在长途汽车的最后一排-揭开不为人知的秘密与挑战
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坐在长途汽车的最后一排-揭开不为人知的秘密与挑战

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前言

最近充电头网拿到了联想笔记本电脑最新INBOX标配的65W 49cc氮化镓快充充电器,这是迄今为止联想笔记本电脑最小体积的65WINBOX电源适配器,目前已标配于LenovoAirXAI元启、YOGA36014AuraAl元启翻转轻薄本、YOGA36014AI元启版、YOGAAir15AuraAl元启版等机型。

产品得益于镓未来G1N65R150PB-NGaN方案以及平面变压器模块的加持,设计得相当小巧,三围仅47*35*30mm,功率密度高达1.32W/cm³,小巧便携方便日常使用。

该笔记本电脑INBOX标配充电器支持PD3.0以及PPS通用快充协议,支持全输入电压范围最大输出功率达65W的长时间满载运行,不仅能够满足笔电充电瞬间1.5倍过功率的要求,还兼容平板、手机日常快充需求,适用于联想、苹果、三星等品牌设备。下面充电头网就对这款充电器进行拆解,看看实际质量如何。

联想65W氮化镓充电器外观

机身正面中心区域设计有Lenovo品牌。

另一面设计有65字样,表明这是一款65W快充充电器。

输入端外壳印有产品参数信息。

充电器参数特写

型号:ADLX65UAGC2E

输入:100-240V~50/60HZ1.8A

输出:5V3A、9V3A、15V3A、20V3.25A,65WMax

制造商:康舒科技股份有限公司

产品已经通过了CCC认证、中国节能认证和VI级能效认证。

充电器配备固定式国标插脚。

输出顶面配备单USB-C接口。

实测充电器机身长度为47.15mm。

宽度为35.31mm。

厚度为30.28mm。

和苹果61W充电器放在一起对比,体积优势明显。

充电器拿在手上的大小直观感受。

另外测得充电器重量约为87g。

使用ChargerLABPOWER-ZKT003C测得USB-C口支持PD3.0、PPS、QC5、DCP充电协议。

此外PDO报文显示C口还具备5V3A、9V3A、15V3A、20V3.25A四组固定电压档位,以及5-11V3A和5-21V3A两组PPS电压档位。

联想65W氮化镓充电器拆解

将输入端外壳拆开,插脚与连接导线锡焊。

取出PCBA模块,模块周身覆盖铜散热片帮助散热。

测得散热片长度约为43.18mm。

宽度为31.27mm。

厚度为26.45mm。

模块输入端填充白胶。

将散热片拆下,内侧设有麦拉片进行隔离绝缘,PCBA模块底部、侧面贴有导热垫帮助传递热量。

模块正面一览,保险丝、高压滤波电解电容以及变压器等均采用小板焊接,堆叠十分紧凑,之间采用麦拉片、塑料壳进行隔离绝缘,缝隙间填充白胶加固。

输入端一览,左侧小板上焊接延时保险丝,主板前端焊接安规X2电容以及共模电感。

模块侧面一览,小板背面设有整流桥,高压滤波电解电容也采用小板焊接,底部设有塑料壳进行隔离绝缘。

另一侧焊接平面变压器模块。

将整个PCBA模块拆分开,方便对器件进行观察了解。

延时保险丝来自华德,规格为3.15A250V。

安规X2电容来自HJC华容,规格为0.47μF。

一旁共模电感用于滤除EMI干扰,采用底座竖焊最大化利用空间。

整流桥来自PY平伟,型号TBMR810,规格为8A1000V,采用TBM封装。

另一块小板上设有四颗高压滤波电解电容。

其中一颗电解电容来自AiSHi艾华。

艾华的电容规格为420V18μF。

另外三颗黑色电容均来自Elite金山,其中两颗大的规格为400V33μF。

一颗小的规格为400V12μF。

模块拆分后主板正面一览,输出端设有一颗协议芯片。

主板背面一览,设有电源主控芯片、氮化镓开关管、贴片Y电容、光耦以及输出VBUS开关管等器件。

电源主控芯片来自安森美,型号NCP1345,这是一款高度集成的准谐振反激控制器,专为高性能离线式USB-PD及Type-C电源转换器设计。该器件采用创新的双引脚VCC架构,可直接连接辅助绕组以简化供电管理,在减少外围元件数量的同时提升系统性能。采用SOIC-9封装。

初级开关管采用镓未来G1N65R150PB-N,是一颗耐压650V的氮化镓功率器件,瞬态耐压800V,标称导阻150mΩ,栅极耐压支持±20V,可使用传统硅MOS驱动,相比增强型氮化镓,大大简化栅极驱动电路设计。

镓未来G1N65R150PB-N采用PQFN8x8封装,散热焊盘为源极,减小高频走线面积,提升EMI性能。

贴片Y电容来自四川特锐祥科技股份有限公司,具有体积小、重量轻等特色,非常适合应用于氮化镓快充这类高密度电源产品中。料号为TMY1470J。

特锐祥专注于被动元器件的研发、生产及销售,注册资本1亿元。旗下产品包括:贴片式Y电容、插件式Y电容,贴片式中高压直流电容、以及贴片式NTC。TRX将致力于陶瓷材料的研究,以拓展更多品类的应用,为客户提供更多的解决方案。

另外两颗贴片Y电容也是来自特锐祥,料号TBY2471ME,耐压300V,容量470pF,容差±20%。

1008光耦特写,用于输出电压反馈。

平面变压器模块小板正面右侧设有同步整流控制器和同步整流管。

另一面设有固态滤波电容和钽电容,用于同步整流输出滤波。

将平面变压器磁芯敲碎,对应内部小板为环形结构设计。

同步整流控制器丝印IBHJP,实际型号为MP6908A,来自MPS芯源半导体,最高工作频率600KHz。支持DCM、CCM、QR、ACF多种工作模式,支持高侧和低侧应用,具备振铃检测防止误开通,采用TSOT23-6封装。

同步整流管来自Toshiba东芝,型号TPH4R50ANH,NMOS,耐压100V,导阻3.7mΩ。

固态滤波电容规格为25V330μF。

Kemet基美的聚合物钽电容,规格为100μF25V,这里也是为了减小体积,同时适合GaN适配器高开关频率的特点。

协议芯片采用通嘉LD6612QM,具有高度整合性,能减少外部零件,是具有整体成本与设计尺寸优势的解决方案。LD6612结合了USB-PDbasebandPHY、Type-Ccable侦测、并联稳压器、电压和电流监控、负载开关NMOS控制电路及微控制器。芯片内建的稳压器可让工作电压操作于3V~24V,协议支持:PD3.0,PPS,FCP/SCP,QC5/QC4+/QC3.0/QC2.0,Apple5V2.4A,BC1.2等。

输出VBUS开关管来自万国半导体,型号AONR32308C,这是一款耐压30V的NMOS管,导阻4.6mΩ,采用DFN3*3封装。

万国半导体AONR32308C资料信息。

全部拆解一览,来张全家福。

充电头网拆解总结

最后附上联想65W氮化镓充电器的核心器件清单,方便大家查阅。

联想这款充电器在白色外壳衬托下显得非常简洁,腰身上设有Lenovo品牌和65W功率字样,输入端配备固定式插脚。性能上支持PD3.0、PPS快充协议,具备5V3A、9V3A、15V3A、20V3.25A四组固定电压档位,以及5-11V3A和5-21V3APPS,满足笔电全输入电压范围的长时间满载快充需求。

充电头网通过拆解了解到,充电器PCBA模块设计得十分紧凑,采用安森美NCP1345搭配镓未来G1N65R150PB-N氮化镓器件,以及MPSMP6908搭配东芝同步整流管组成开关电源,高频高效电源方案以及平面变压器的使用,使模块能够做到非常小巧,满足时下用户的需求。

模块初次级有塑料壳隔离,同时缝隙间填充白胶提升整体结构稳定性,覆盖铜散热片更好散热,用料做工讲究。

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