Introduction to digital power supply
In applications that are easy to use and require few parameter changes, analog power products have more advantages, because the specificity of their applications can be achieved through hardware solidification. However, in applications where there are many controllable factors, faster real-time response, and more requirements, In complex high-performance system applications involving analog system power management, digital power supplies have more advantages. In addition, in complex multi-system businesses, compared to analog power supplies, digital power supplies can be used in various applications through software programming. Its scalability and reusability allow users to easily change working parameters and optimize the power supply system. It can also reduce the number of peripheral components through real-time overcurrent protection and management.
In complex multi-system businesses, compared to analog power supplies, digital power supplies realize various applications through software programming. Its scalability and reusability allow users to easily change working parameters and optimize the power supply system. It can also reduce the number of peripheral components through real-time overcurrent protection and management.
Digital power supplies are controlled by DSP and MCU. Relatively speaking, the power supply controlled by DSP adopts digital filtering method, which can better meet the complex power requirements, has faster real-time response and better power supply voltage stabilization performance than the power supply controlled by MCU.
What are the benefits of digital power
First of all, it is programmable. All functions such as communication, detection, and telemetry can be implemented through software programming. In addition, digital power supplies have high performance, high reliability, and are very flexible.
Interference: Between digital and analog in a single-chip microcomputer, because the digital signal is a pulse signal with a very wide spectrum, it is mainly the digital part that interferes strongly with the analog part; not only are the digital power supply and the analog power supply generally separated, the two are used. Filter connection, in some demanding situations, such as when the AD converter inside some microcontrollers performs AD conversion, the digital part is often put into sleep state, and most of the digital logic stops working to prevent them from causing damage to the analog part. interference. If the interference is serious, you can even use two power supplies separately. Generally, inductors and capacitors are enough to isolate them. You can also connect the power supplies of the digital and analog parts of the entire board together, and use separate paths to directly connect them to the solder joints of the power supply filter capacitor. If the requirements for resisting interference are not high, they can be connected together casually.
