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拆解报告：HP惠普45W USB-C电源适配器TPN-CA02_我的网站

一 |

Shi Jianyang (L) and his grandfather check the growth of crops on a farmland near a forest area along the Maowusu Desert in northwest China's Shaanxi Province in 2026.(Xinhua)A drone sweeps above the pine forest, sending images of the woods to a screen below. Under the trees stands Shi Jianyang whose grandfather and hundreds of villagers came 40 years ago with shovels and saplings to stop advancing sand.
At 29, Shi belongs to a new generation of desert-control workers equipped with drones, machines and remote irrigation systems. An earth auger can now do in a day what once required about 200 laborers, while a single phone can control drip irrigation across more than 1,000 mu (about 66.67 hectares) of woodland.
For the older Shi's generation, the challenge was getting trees to survive in moving dunes. For the grandson, it is figuring out how to make those forests healthier and more resilient for decades to come.
Their story captures a broader shift in desert control along the southern edge of the Maowusu Desert in northwest China's Shaanxi Province: turning shifting sand into forest was only the beginning.
In 1986, Shi Guangyin, Shi Jianyang's grandfather, led more than 300 villagers into Langwosha, a sandy area in Dingbian County in Yulin City. He had raised 60,000 yuan (about 17,377 U.S. dollars at the time) by selling his family's 84 sheep and borrowing from relatives and banks to contract 3,500 mu of barren sandy land.
The early setbacks were severe. Strong winds destroyed about 90 percent of the saplings in the first year, and about 80 percent of those planted the following year failed to survive.
After seeking advice from forestry experts, Shi and the villagers laid out checkerboard-shaped barriers on windward slopes to hold the sand in place, then planted trees, shrubs and grasses within them. Sapling survival rates rose to about 80 percent.
Over the next four decades, Shi and those working alongside him treated 250,000 mu of sandy and saline-alkali land, with more than 53 million trees and shrubs taking root.
Greening the Maowusu Desert is part of a much larger national undertaking. It is one of the three major battlefronts of China's Three-North Shelterbelt Forest Program, a decades-long effort to curb desertification across northern China.
China has made desertification control a national ecological priority. Since 2023, the country has stepped up efforts under the program, with greater emphasis on systematic restoration and on consolidating earlier gains.
Decades after the first trees took root, a new challenge emerged. Poplars planted decades ago for their rapid growth began reaching the end of their life cycle, with large numbers of trees dying, while forests dominated by a single species were more vulnerable to pests and disease.
Making a forest was one challenge. Keeping it healthy for another generation is another.
Shi Jianyang grew up watching his grandfather and father work to hold back the sand. His father, Shi Zhanjun, spent years planting trees alongside Shi Guangyin before dying in a road accident in 2008 while transporting saplings.
As a boy, Shi Jianyang sometimes resented the work that had taken his father. He spent summer holidays in makeshift tents in the sandy land, eating meals gritty with sand. During planting season, his father would return home with painful blisters in his mouth.
Yet he eventually chose forestry himself.
After studying forestry technology in university, Shi returned home in 2020 and began working in desert control. His team, initially made up of just seven or eight young locals, later brought in university graduates with expertise in soil science, landscaping and pest control.
The younger generation faced a different question: not simply how to make trees survive, but how to make a forest last.
Shi and his team spent more than 40 days in a 5,000-mu woodland setting up sample plots, measuring rainfall, studying soil microorganisms and tracking tree lodging. They proposed renewing aging forests with better-planned forest structures and expanded the planting of Mongolian pine, a long-lived evergreen species that had been successfully tested locally.
To date, about 50,000 mu of land has been planted with Mongolian pine. As some trees fail to survive and require replacement in subsequent planting seasons, the cumulative area of planting operations has reached about 65,000 mu.
Technology has also changed daily work. Drones patrol forests from the air, mechanized equipment dig planting pits, and irrigation can be managed remotely. Sapling survival rates, which Shi Guangyin's generation had raised to about 80 percent through improved sand-control and planting methods, have climbed further to about 92 percent with greater mechanization and more precise management.
Shi said the changes can be felt on the ground. Strong sandstorms have become rare, winds are weaker inside the forest, and the ground stays moist longer after rain. Summer days beneath the trees also feel cooler, while morning dew appears more often. The changes lead him to rethink desert control.
His approach also reflects a broader effort in China's desert regions to link ecological restoration with local livelihoods, giving communities a stronger economic stake in protecting restored land.
With his grandfather's support, Shi and his team have been looking for ways to make better use of the restored land as ecological conditions improve. They have developed potato seedlings suited to sandy soil, promoted greenhouse farming, and set up a livestock cooperative, while increasingly growing potatoes, watermelons and peppers on land once prone to losing water and nutrients.
Shi has also turned to livestreaming e-commerce to market potatoes and other local farm produce, while developing forest-based health and leisure projects. More than 2,000 local residents have seen their incomes rise steadily as farming, livestock breeding and other businesses have developed.
"We used to fear the sand and keep away from it. Now we understand it and know how to make use of it," Shi Guangyin said. "Today, there are opportunities to make a living everywhere in this sandy land."
Across Yulin, forest coverage has risen from 1.8 percent in 1949 to 34.8 percent, while shifting dunes that once encroached on villages have been brought under control.
For Shi Jianyang, however, the green landscape is not proof that the work is finished. "Planting a tree is not difficult," he said. "The difficult part is looking after it for decades."
The grandfather generation learned how to stop the sand. The young generation is learning how to make what grew there last.
Shi Jianyang (R) and his grandfather check tree growth in a forest area in Dingbian County in Yulin City, northwest China's Shaanxi Province in 2026. (Xinhua)

Shi Jianyang (R) and his grandfather check tree growth in a forest area in Dingbian County in Yulin City, northwest China's Shaanxi Province in 2026. (Xinhua)
。充电器支持PD2.0快充，具备5V，12V，15V电压档位，同时自带有电源输入线和USB-C输出线，方便用户使用。产品已经通过了多个国家或地区的认证，全球各个地区都能使用，可见惠普笔记本电脑在全世界都是相当受欢迎的。下面我们就对这款充电器进行拆解，看看其做工用料如何。惠普45W电源适配器外观惠普这款45W电源适配器自带输入电源线以及USB-C输出线缆，不可分离设计，连接处做了抗弯折保护处理。
电源线采用三脚插头，来自Longwell良维，规格为10A 250V~，通过了CCC认证。
适配器机身方块扁平造型，采用PC阻燃材质黑色外壳，表面磨砂抗指纹。
机身顶面中心设计有HP品牌logo，右侧贴有Windows标签。

二 |
机身一侧印有适配器参数型号：TPN-CA02输入：100-240V~50/60Hz 1.4A输出：5V2A、12V3A、15V3A适配器已经通过了KC认证，由群光电能制造。
机身另一侧还有适配器其它认证信息，通过了GS、CE、EAC、CCC、PSE、UL、NOM、NYCE等多个认证，全球绝大多数国家和地区都能使用。
机身与线缆连接处做了抗弯折保护。
USB-C端子采用弯头设计，方便在狭窄角落使用，线头扁平外壳上设计有HP品牌。
测得电源线长度约为49cm。
测得机身长度为66.26mm。
宽度为66.33mm。
厚度为28.9mm。
测得USB-C输出线缆长度约为1.8米，可见适配器整体相当长，满足绝大多场景使用需求。

三 |
适配器机身放在手上的大小直观感受。
最后测得适配器总重量约为272g。

四 |
使用ChargerLAB POWER-Z KM002C测得适配器支持PD2.0、Samsung 5V2A充电协议。
并且具备5V3A、12V3A、15V3A三组固定电压档位。惠普45W电源适配器拆解对惠普这款45W电源适配器外观和输出进行了解后，下面就进行拆解，看看内部的用料和做工。
沿外壳接缝拆开充电器外壳，内部PCBA模块采用黑色麦拉片绝缘，采用铝制散热片散热。
在拆解中发现电源线采用梅花插头连接。
适配器交流输入采用导线焊接连接。
输出端导线也采用焊接连接。导线冷压端子焊接，并外套热缩管绝缘。
PCBA模块正反面均包裹麦拉片绝缘。
使用游标卡尺测得PCBA模块长度约为60.38mm。
PCBA模块宽度约为60.69mm。
PCBA模块厚度约为23.97mm。
散热片通过焊接固定在PCB背面。
取下PCBA外层的散热片，内部元件打胶固定及散热。
其中共模电感，安规X2电容，变压器，初级电解电容等元件均打胶固定。

五 |
PCB背面打胶填充，并粘贴黑色胶块支撑。
其中整流桥和初级开关管共用一块T型散热片，开关管通过螺丝固定在散热片上。
PCBA模块正面一览，右上角为保险丝和输入EMI滤波电路，左侧为高压滤波电容，中间位置为整流桥和开关管，右侧为变压器，在右下角为输出滤波电容。

六 |
PCBA模块背面一览，左侧焊接输出协议芯片和VBUS开关管，同步整流控制器，左侧焊接反馈光耦。

七 | 通过对PCBA模块的观察，惠普这款45W电源适配器采用反激开关电源架构，同步整流，宽电压输出。

八 | 输出电压由协议芯片通过光耦进行控制，实现宽电压输出。下面我们就从输入端开始了解各个器件。
输入端延时保险丝规格为2.5A 250V。
第一级共模电感采用漆包线和绝缘线绕制。

九 |
安规X2电容来自SCC实全电子，规格为0.33μF。
第二级共模电感采用漆包线绕制，打胶固定绝缘板。
整流桥型号KBP206GL，规格为2A 600V。
高压滤波电容来自金山，规格为68μF 400V。
初级主控芯片丝印PCL，采用SOT23-6封装。
初级开关管来自东芝，型号2SK3569，是一颗耐压600V的NMOS，导阻为540mΩ。
一颗4.7μF50V电解电容用于主控芯片供电。
变压器采用胶带严密缠绕绝缘，标签印有CHICONY群光字样。
蓝色Y电容特写。
EL1018光耦用于输出电压调节与反馈。
同步整流控制器来自MPS，型号MP6901，是一颗快速关断智能同步整流控制器，支持最高400KHz开关频率，支持CCM，DCM，和准谐振拓扑，支持高侧和低侧应用。
同步整流管来自AOS万代，型号AON6450，是一颗耐压100V的NMOS，导阻12.1mΩ，采用DFN5*6封装。
输出滤波电容规格为680μF 25V。

十 |
协议芯片采用伟诠WT6630P，支持USB PD 2.0快充协议，内置5V、12V、15V、20V的VBUS，可设置为30W，45瓦，60W三种输出模式。该芯片支持节电模式、过压保护、低压侧输出电流分流监控器。
输出VBUS开关管采用万代AO4447A，PMOS，耐压30V，SOIC-8封装。
全部拆解完毕，来张全家福。

十一 | 充电头网拆解总结惠普这款45W电源适配器采用输入线和输出线一体设计，三插电源线长度为50CM，输出线长度为180CM，自带接地线的设计能够提供有效的接地，避免使用时的触电感觉。适配器支持PD2.0快充，具备5V，12V，15V三档输出电压。充电头网通过拆解了解到，惠普这款电源适配器内部PCBA模块包裹散热片，内部整流桥和MOS管固定散热片并打胶加强散热。内部高压开关管来自东芝，同步整流控制器来自MPS，同步整流管和VBUS开关管来自AOS，协议芯片来自伟诠，高压滤波电容来自金山，低压滤波电容来自辉城，大面积的散热设计，满足笔记本电脑长时间满载需求。

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Published on:16:43:30