Guide reading: Switching power supply is generally used in small communication base stations and unguarded equipment rooms. It is generally composed of pulse width modulation (PWM) control IC and MOSFET. As a power supply product, it must be equipped with battery management, charge and discharge management, voltage protection and other functions. . As a common product in the IDC data room, the control accuracy requirements for voltage are also particularly high.
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Guide reading: Switching power supply is generally used in small communication base stations and unguarded equipment rooms. It is generally composed of pulse width modulation (PWM) control IC and MOSFET. As a power supply product, it must be equipped with battery management, charge and discharge management, voltage protection and other functions. . As a common product in the IDC data room, the control accuracy requirements for voltage are also particularly high.
If the voltage of the switching power supply you are using is unstable, there may be many factors, so we can only use the exclusion method to judge the cause of it. The first is that the voltage range of the input switching power supply exceeds the output condition maintained by its own converter is too high or too low. In this case, the voltage instability will occur. You can check whether the output of the circuit is stable. If it is stable, it needs to be adjusted. The design of the transformer.
The second is that some local protection circuits are accidentally triggered, such as overvoltage, overcurrent, etc., carefully look at the control node of each protection circuit to see which place was accidentally accidentally touched.
There is also the instability of the VDD waveform of the control circuit, which has exceeded the control IC condition of the switching power supply. In this case, you can adjust the supply voltage or select a suitable decoupling capacitor to solve.
The last method is the internal interference of the switching power supply, such as current sampling, the voltage sampling circuit will cause the output voltage of the switching power supply to be unstable. You can check the circuit wiring, and sensitive circuits should avoid sources of interference.
The above methods hope to help you solve the unstable voltage situation of the switching power supply. If you don't know how to operate, how to repair it, you can call our salesperson at 0371-23951653 to consult our technical engineers.
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