4 Power Structure Design

A good power structure is very important for low-power consumption design. The power structure not only implements high-power efficiency, but also must be a reasonable power management logic such as which power rail is always-on, which power rail can be asleep and also woken up. The reason why is the power structure needs to sort power rails to always-on power and power that can be shutdown if power consumption of video processing is too high, the current is not small even when video SOC stays in sleep mode. WIFI needs to continuously connect to the internet so that the power structure can respond to the remote request on time.

Figure 4-1 Battery Powered Camera Power Tree