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Vue éclatée de l'Apple TV 4ème génération

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Adım 7
Apple TV 4th Generation Teardown: adım 0, 3 resimden 1. Apple TV 4th Generation Teardown: adım 0, 3 resimden 2. Apple TV 4th Generation Teardown: adım 0, 3 resimden 3.

  • Last to come out of the box: a great big chunky heat sink with a cute little power supply board tucked away inside.

  • Heat rises, so this heat-generating component lives on top of the stack, with the heat-sensitive logic board beneath.

  • The redesigned power supply is rated at 12 V at 0.917 A. Compare that to the 3rd-gen Apple TV's main reactor, which pumped out 3.4 V at 1.75 A.

  • We noticed a distinct lack of cables connecting the power supply to the logic board. We're theorizing the power is either transmitted by magic, or through the heat sink screw posts.

  • And as a fun bonus, some chips:

  • NXP Semiconductor TEA1738LT switch mode power supply controller

  • Toshiba TLP291 photocoupler

  • STMicroelectronics STF6N65M2 650 V N-channel MOSFET

Le dernier à sortir de la boîte : un grand dissipateur thermique bien épais avec une jolie petite carte d'alimentation repliée à l'intérieur.

L'air chaud monte, donc ce composant générant de la chaleur est installé au-dessus de la boîte, avec la carte mère sensible à la chaleur en dessous.

L'alimentation redessinée est évaluée à 12 V à 0,917 A. Comparez cela avec le l'alimentation principale de la Apple TV 3ème génération, qui pompe 3,4 V à 1,75 A.

Nous avons remarqué un manque distinct de nappes reliant l'alimentation à la carte mère. Nous en déduisons que le courant est transmis soit par magie, soit via les supports des vis du dissipateur thermique .

[* black] Last to come out of the box: a great big chunky heat sink with a cute little power supply board tucked away inside.
[* icon_note] Heat rises, so this heat-generating component lives on top of the stack, with the heat-sensitive logic board beneath.
- [* black] The redesigned power supply is rated at 12V at 0.917A. Compare that to the [guide|8293|3rd-gen Apple TV's main reactor|stepid=33183|new_window=true], which pumped out 3.4V at 1.75A.
+ [* black] The redesigned power supply is rated at 12 V at 0.917 A. Compare that to the [guide|8293|3rd-gen Apple TV's main reactor|stepid=33183|new_window=true], which pumped out 3.4 V at 1.75 A.
[* black] We noticed a distinct lack of cables connecting the power supply to the logic board. We're theorizing the power is either transmitted by magic, or through the heat sink screw posts.
+[* black] And as a fun bonus, some chips:
+ [* red] NXP Semiconductor [link|https://www.nxp.com/part/TEA1738LT#/|TEA1738LT] switch mode power supply controller
+ [* orange] Toshiba [link|https://toshiba.semicon-storage.com/ap-en/semiconductor/product/optoelectronics/detail.TLP291.html|TLP291] photocoupler
+ [* yellow] STMicroelectronics [link|https://www.st.com/en/power-transistors/stf6n65m2.html|STF6N65M2] 650 V N-channel MOSFET

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