What Is the Manufacturing Method of an Adjustable DC Power Supply?
Many people have discovered adjustable DC power supplies, but this is not the case. Designing an adjustable DC power supply is not difficult, but it is difficult to achieve precision. After you truly get started, you can easily gain experience and design step by step using discrete structures. Today, we will teach you how to design an adjustable DC power supply step by step. The first step in designing an adjustable DC power supply is to check the specifications. Many people have talked about the details. Today, I will briefly discuss the design concept of a traditional isolated adjustable DC power supply with a wide input range.
1. Firstly, determine the performance, and then choose the appropriate topology based on your specific needs
This multi selection flyback with adjustable DC power supply can basically meet your requirements. Choose a more experienced formula here. If you need some analysis, you can discuss it.
2. Select PWM IC and MOS that match the rough design of the equivalent circuit
After deciding to adopt a flyback topology design, you need to choose PWM ICs and MOSFETs that match the preliminary schematic design (sch). You can decide for yourself whether to use it separately or in an integrated manner. Split internal calculations.
Discretization: The advantage of separating PWM-IC and MOS is that power can be freely adjusted. However, the disadvantage is that (from a design perspective) the design and debugging cycle is relatively long. Integration: PWM IC and MOS are integrated into one. This software package saves developers a lot of computation and debugging steps, making it suitable for new environments and rapid development.
3. Create a schematic diagram
After confirming the selected chip, start creating the circuit diagram (sch).
It is a good idea to check the appropriate data table before designing to view simple parameters. Whether you choose PI integration or discrete options such as 384x or OBLD, you need to search the data table. Data tables usually come with simple circuit diagrams that form the basis of the design.
4. Determine appropriate parameters
After the schematic is ready, you need to determine the appropriate parameters for the next step of PCBLayout. Of course, different companies have different processes. You need to follow the appropriate process and develop good design habits. This step can include pre evaluation, general confirmation, etc., and calculations can be performed after approval is completed.
