Teardown of Apple 40w Dynamic Power Adapter with 60w Max (a3365)
Posted4 months agoActive4 months ago
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Teardown analysis of Apple's 40W Dynamic Power Adapter.
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Sep 17, 2025 at 12:55 PM EDT
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> The unique dynamic power delivery can be understood as "peak 60W, stable 40W," intelligently adjusting output power based on the device’s needs.
"intelligently adjusting output power based on the device’s needs" is what _every_ power supply does, that's how electricity works. If there is no device connected, there is no power output from the supply. If devices appears and draws some power, power supply supplies it. It's true about every battery and every household power supply.
The real innovation is that when charger gets hot, it somehow signals the device to draw less power... but there is zero indication of how this is actually being done.