Main technical goals of switching power supply
Technology is becoming more and more advanced, bringing more convenience to people's lives. More electrical equipment has begun to enter our life. It can be said that switching power supplies can be seen everywhere around us. Switching power supplies are mainly used to control the current and turn our equipment on and off. So do you know what are the main technical goals of switching power supplies? Below, the editor of Carry Energy Conservation Co., Ltd. will introduce you to this problem.
1. Input voltage scale
When the input voltage of the switching power supply changes, the input voltage change scale keeps the output characteristics unchanged. The larger the scale, the stronger the ability of the power supply to adapt to changes in external urban power, and the larger the working scale of the switching power supply.
2. Voltage adjustment rate
Voltage regulation, also known as voltage stability, refers to the relative change in output voltage when the output current remains constant (that is, the load remains unchanged) and the input communication operating voltage changes. The technical goal is to verify whether the stability of the output voltage of the switching power supply meets the required standard under the worst power supply voltage environment.
3. Current adjustment rate
Current regulation is also called load regulation. It is the relative change of the output voltage when the rated input communication voltage (such as 220VAC) and the output current changes from the minimum value of 0 to the maximum value. The purpose is to verify whether the output voltage stability of the switching power adapter meets the required standards under the worst load environment.
4. Output internal resistance
The ratio of the change in output voltage to the change in output current. The smaller the ratio, the less the power supply's output voltage will vary with load size and the better the voltage regulation will be.
5. Conversion power
The ratio of power output power to input power. The higher the ratio, the greater the varying power, the smaller the size of the switching power supply, and the higher the reliability. The power of the current switching power supply can reach more than 90%.
6. Ripple of output voltage
Since the voltage stabilization process of the switching power supply is a process of continuous sampling, response and adjustment, there will be a ripple voltage superimposed on the output DC voltage, that is, the output ripple voltage. The smaller the value, the better the output characteristics. There are two ways to indicate the ripple: one is the rms value of the output ripple voltage, and the other is the peak value of the output ripple voltage.
The above main technical objectives of switching power supply are shared here. Switching power supply products are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial control equipment, communication equipment, power equipment, instrumentation and other fields.
