Introductory note on digital power supplies
Analogue power supply products are more advantageous in applications that are simple to use and do not require many parameter changes, because the specificity of the application can be achieved through hardware curing, while digital power supplies have an advantage in complex, high-performance system applications with more controllable factors, faster real-time response time, and the need for multiple analogue system power management. In addition, in complex multi-system operations, compared to analogue power supplies, digital power supplies are programmed through software to achieve multiple applications, and their scalability and reusability allow users to easily change operating parameters and optimise the power supply system. It also reduces the number of peripheral devices through real-time overcurrent protection and management.
Difference between switching and analogue power supplies
In the complex multi-system business, compared with analogue power supply, digital power supply is programmed by software to achieve multi-faceted applications, and its scalability and reusability enable users to easily change the working parameters and optimise the power supply system. It also reduces the number of peripheral devices through real-time overcurrent protection and management.
Digital power supplies are controlled by DSPs and MCUs. Comparatively speaking, DSP-controlled power supply using digital filtering, MCU-controlled power supply is more able to meet the complex power requirements, faster real-time response, power
The power supply regulator performance is better.
What are the benefits of digital power it is firstly programmable, such as communication, detection, telemetry and all other functions can be achieved by software programming. In addition, digital power supply has high performance and high reliability, very flexible.
Interference: microcontroller between digital and analog, because the digital signal is a very wide spectrum of pulse signals, so the main digital part of the analog part of the interference is very strong; not only are generally used to separate the digital power supply and analog power supply, the two are connected to the filter, in some of the more demanding occasions, such as some of the microcontroller within the AD converter for AD conversion, often to let the digital part of the dormant state! In some demanding occasions, such as AD converters within some microcontrollers for AD conversion, it is often necessary to let the digital part of the dormant state, the vast majority of digital logic to stop working to prevent them from interfering with the analogue part. If the interference is serious, you can even use two separate power supplies, generally with inductive and capacitive isolation on the line. Can also be the entire board on the digital and analogue parts of the power supply are linked together, with separate paths directly to the power supply filter capacitors on the solder joints. If the anti-jamming requirements are not high, can also be connected together.
(1) If you do not use the chip's A/D or D/A function, you can not distinguish between digital power and analogue power.
(2) If you use the A/D or D/A, you also need to consider the reference power supply design.
Difference between switching power supply and analogue power supply
