Review and teardown of PowerCube by allocacoc
A quick review and teardown of the PowerCube by allocacoc
Side plate showing KEMA – KEUR certification:
Inside the device:
The USB charger:
The main IC is the On-Bright OB2538AP.
The reverse side of the PCB:
The USB charging sockets are mounted on the other side of this small PCB. These four resistors form the two voltage devices that set the identification voltages on the data pins.
The resistors are connected as shown in the following table:
|PULL UP RESISTOR||PULL DOWN RESISTOR||OUTPUT VOLTAGE|
|D+||5.6KΩ (562)||6.2KΩ (622)||2.6 V|
|D-||10KΩ (103)||6.2KΩ (622)||1.9 V|
This setup makes the charger advertise itself as an Apple 2 Amp charger.