Teardown of Apple 12W USB-A Charger (A2167)

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Introduction

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ChargerLAB has gotten an Apple 12W USB-A Charger, which is the only Apple charger supporting the 5V2.4A protocol. Even it used a synchronous rectifier back in the day, it was still not a popular charger. However, it supports 5V2.4A and can reach the maximum output power of the charger when charging for the devieces with a Lightning cable. To be honest, it's not bad. Let's take it apart.

Bill of materials (BOM)

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Common Mode Choke: Sumida
High-voltage Filter Capacitor: Nippon Chemi-Con (12μF)
Primary Master Control Chip: 601A
Primary Switch Transistor: Infineon IPS80R1K4P7, 80R1K4P7 CoolMOS P7 (800V, 1.4Ω)
Transformer: Sumida OEM2143
SMD Optocoupler: L217
Synchronous Rectifier: Onsemi NTTFS5C658NL, 658L (60V, 5mΩ)
Synchronous Rectifier Controller: Onsemi FAN6240, ACD (200kHz)
Solid Filter Capacitor: 1200μF, 6.3V