最近的news storiesreport that some fast chargers designed with MCUs can be easily hacked. When users connect their devices to these fast chargers via the USB cable, hackers may be able to compromise the charger by sourcing more power than the device can safely handle, damaging or even destroying the device.

Hackers can alter the firmware of fast charge devices in order to deliver extra voltage and damage connected equipment . . .

设计人员可以尝试在MCU中添加更多代码，以防止黑客修改，但仅当MCU可以更新时才。或者，他们可以尝试在设计充电器的设备中添加过载保护。这些方法很难理想。

Hard-Wired State Machine Approach

A simpler and lower cost approach is to design fast chargers and power supplieswithoutMCU和固件，而是使用硬连线状态机方法。

Fast chargers and power supplies designed with Dialog’sRapid Charge™controllers cannot be hacked, because they arehard-wired state machines, so there is no firmware that can be accessed and corrupted. And, with a hard-wired state machine, you won’t need to spend extra time and expense to harden firmware or add overload protections.

All of Dialog’sRapid Charge™controllers are hard-wired state machines.