How to improve the efficiency of programmable DC power supply?
The advanced technology, full program control, full button operation, compact size, light weight, ease of carrying, and other features of the programmable DC power supply are all present. It uses microcomputer control and works in a variety of settings. Though power modules for various pieces of equipment have been upgraded due to advancements in science and technology, how much do you know about these programmable DC power supply parameters?
Programmable DC power supply engineers can increase the efficiency of the power supply by precisely measuring power and efficiency, precisely identifying the primary power loss points, swapping out components, or altering the topology structure during the design and debugging phases of the power supply prototype board. What are the procedures for evaluating a programmable DC power supply's efficiency?
1. Input power quality test
Testing the input power quality is necessary for prototype testing because the waveforms of the input voltage and current are not exactly the same.
2. Measurement of active components: switching apparatus
Because circuit parasitics hinder the device from switching promptly, transistor switching circuits usually waste most energy during the switching process.
"Start-up loss" is the energy lost when the switching device flips from OFF to ON, and "turn-off loss" is the energy lost when the switching device flips from ON to OFF.
3. Measuring passive components: magnetic components
Components classified as passive don't change or increase signals. A wide variety of passive parts, including resistors and capacitors, are used in programmable DC power supply; nevertheless, from the standpoint of measurement, magnetic parts, or magnetic devices, particularly inductors and transformers, are of primary importance.
Copper wire is wrapped around an iron core in multiple rounds to create both inductors and transformers. It is appropriate for filtering the power supply's current input and output since the inductor's impedance rises with frequency and its blocking effect is stronger at higher frequencies than it is at lower ones. Several indicators can aid in assessing a programmable DC power supply's performance.
