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 |
|---|---|---|---|---|
| Cypress Semiconductor | CYPD313532L-QXQQ | CYPD313 532LQXQQ 1919 TWN 6157 |
USB Controller | USB Type-C Port Controller. |
| Alpha & Omega | AO32394E | (LOGO) 32394E GA9K1U |
Power MOSFET | Alpha & Omega AO33294E is a Power MOSFET. |
| Power IntegrationsInc | SC1263K6 | (LOGO) SC1263K6 |
CV/CC Flyback Switcher IC | Power Integrations Inc SC1263K6 is a CV/CC Flyback Switcher IC. |
| Infineon | BSZ096N10LS5 | S10L RL21 |
Power MOSFET | Infineon BSZ096N10LS5 is N-channel, OptiMOS 5, Power-Transistor rated for 100V. |
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