Digital power is controlled by DSP and MCU. Comparatively speaking, the power supply controlled by DSP adopts the digital filtering method, which can meet the complex power demand more effectively than the power supply controlled by MCU, with faster real-time response speed and better voltage regulation performance of the power supply.
First of all, it is programmable, such as communication, detection, telemetry and other functions can be implemented by software programming.In addition, digital power supply has high performance and high reliability, very flexible.
Interference: microcontroller between the digital and analog, because the digital signal is a very wide spectrum of pulse signal, so the digital part of the analog part of the strong interference; Not only generally adopts digital power and analog power supply separately, with filter connected between them, in some occasions with higher requirements, such as some SCM internal AD converter, AD conversion, digital parts often need to be placed in a suspended state, most of the digital logic to stop working, to prevent them from forming interferences to the analog part. If the interference is serious, can even use two power supply respectively, the inductance and capacitance is commonly used in isolation. Can also be the whole board part of digital and analog power supply respectively connected together, with separate access directly to the power supply filter capacitance of the solder joints. If the request is not high, against interference can casually pick up together.
The above is just a simple introduction to the analog power supply, digital power supply, switching power supply differences, want to become an engineer, of course, to learn more things.