What is a digital power supply
In applications that are simple and easy to use with minimal requirements for parameter changes, analog power products have more advantages because their targeted application can be achieved through hardware solidification. However, in complex high-performance system applications with more controllable factors, faster real-time response speed, and the need for multiple analog system power management, digital power supplies have advantages. In addition, in complex multi-system business, compared to analog power supply, digital power supply is achieved through software programming for various applications. Its scalability and reusability enable users to easily change working parameters and optimize the power system. Through real-time overcurrent protection and management, it can also reduce the number of peripheral devices.
The difference between switching power supply and analog power supply
In complex multi-system business, compared to analog power supply, digital power supply is achieved through software programming for various applications. Its scalability and reusability enable users to easily change working parameters and optimize the power system. Through real-time overcurrent protection and management, it can also reduce the number of peripheral devices.
Digital power supplies are controlled by both DSP and MCU. Relatively speaking, the power supply controlled by DSP adopts digital filtering method, which can better meet complex power requirements, achieve faster real-time response speed, and better power voltage stability performance than the power supply controlled by MCU.
What are the benefits of digital power supply? Firstly, it is programmable, and all functions such as communication, detection, telemetry, etc. can be implemented through software programming. In addition, digital power supplies have high performance and reliability, making them very flexible.
Interference: In the microcontroller, the interference between the digital and analog parts is mainly strong due to the fact that the digital signal is a pulse signal with a wide spectrum; Not only are digital power sources and analog power sources generally separated and connected by filters, but in some demanding situations, such as when AD converters inside certain microcontrollers perform AD conversion, the digital part often needs to enter a sleep state, and the majority of digital logic stops working to prevent them from interfering with the analog part. If the interference is severe, it is even possible to use two separate power sources, usually isolated by inductors and capacitors It is also possible to connect the digital and analog power supplies on the entire board separately, and directly connect them to the solder joints of the power filter capacitor using separate paths If the anti-interference requirements are not high, they can also be easily connected together
(1) If the A/D or D/A function of the chip is not used, digital power and analog power can be indistinguishable.
(2) If A/D or D/A is used, it is also necessary to consider the reference power supply design.
The difference between switching power supply and analog power supply
