Teardown of MSI 100W USB-C Power Adapter (A21-100P1A)

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Introduction
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MSI is a well-known manufacturer of laptops and PC-related devices. So its power adapter is more suitable for long-term high-power use. And today, we will take apart this MSI 100W power adapter for a laptop to see why it can continuously output high power.

Bill of materials (BOM)
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Time-delay Fuse: Walter Electronic
Safety X2 Capacitor: SCC
Bridge Rectifier: Yangjie YBS3010
PFC Boost Controller: ON Semiconductor NCP1611
PFC Boost MOSFET: Vishay SiHD180N60E
PFC Rectifier: Yangjie MURS360B
Electrolytic Capacitor: Chinsan, AiSHi
Master Control Chip: marked with 6151C
MOSFET: Infineon IPD65R190C7
Transformer: Chicony
Optocoupler: 1009
Synchronous Rectifier Controller: MPS XMP6908
Synchronous Rectifier MOSFET: ON Semiconductor NTMFS008N12MC
Protocol Chip: Weltrend WT6633P
Output VBUS MOSFET: Infineon BSC0901NS