Posted: September 27, 2019
Contributing Author: Sinjin Dixon-Warren
The iPhone 11 Pro Max ships with the Apple 1720 18 W USB-C power delivery charger. This device is rated to delivery 5 V and 3 A or 9 V and 2 A. In follow up to our recent blog concerning various aftermarket AC adapters, we decided to have a look inside the Apple product.
The 18 W A1720 is 4.3 cm by 4.3 cm by 2.7 cm corresponding to 50 cm3 (or 3.0 in3), thus giving a power density of 6 W/in3, which is only ~1/3 the power density achieved by the market leading Innergie 60C charger.
Cracking open the case of the A1720 we find a densely packed collection of electronic components mounted on a PCB. The backside of the PCB features a Cypress Semiconductor CYPD313532L-QXQQ and an Alpha & Omega AO32394E power MOSFET. The front side of the PCB is densely packed with three electrolytic capacitors, an inductor coil and a transformer. Removing these devices revealed two more packaged components, namely a Power Integrations SC1263K6 active flyback controller and an Infineon BSZ096N10LS5 100 V N-channel power MOSFET.
|Manufacturer||Part Number||Prominent Markings||Device Type||Item Description|
|USB Controller||USB Type-C Port Controller.|
|Alpha & Omega||AO32394E||(LOGO)
|Power MOSFET||Alpha & Omega AO33294E is a Power MOSFET.|
|CV/CC Flyback Switcher IC||Power Integrations Inc SC1263K6 is a CV/CC Flyback Switcher IC.|
|Power MOSFET||Infineon BSZ096N10LS5 is N-channel, OptiMOS 5, Power-Transistor rated for 100V.|
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