Development of DC regulated power supply towards high precision
With the development of electronic devices towards high-precision, high stability, and high reliability, DC regulated power supplies have put forward high requirements for the power supply of electronic devices.
quality index
(1) Voltage regulation rate SV. The voltage regulation rate is an important indicator that characterizes the stability performance of a DC regulated power supply, also known as the stability coefficient or stability coefficient. It represents the degree of stability of the output voltage VO of the DC regulated power supply when the input voltage VI changes, usually expressed as a percentage of the relative change in input and output voltage per unit of output voltage. Voltage regulation rate formula.
(2) Current adjustment rate SI. The current regulation rate is a major self indicator that reflects the load capacity of a DC stabilized power supply, also known as the current stability coefficient. It characterizes the ability of a DC stabilized power supply to suppress fluctuations in output voltage caused by changes in load current (output current) when the input voltage remains constant. Under specified load current changes, the current adjustment rate of a DC stabilized power supply is usually expressed as a percentage of the output voltage change value per unit output voltage. Formula for current adjustment rate.
(3) Ripple suppression ratio (SR). The ripple suppression ratio reflects the ability of a DC stabilized power supply to suppress the introduced mains voltage at the input end. When the input and output DC stabilized power supply components of the DC stabilized power supply remain unchanged, the ripple suppression ratio is often expressed as the ratio of input ripple voltage peak to peak and output ripple voltage peak to peak, usually expressed in decibels, but sometimes it can also be expressed as a percentage or directly expressed as the ratio of the two.
(4) Temperature stability K. The temperature stability of an integrated DC stabilized power supply is the percentage ratio of the relative change in the output voltage of the DC stabilized power supply within the specified operating temperature range of Ti * (Tmin ≤ Ti ≤ Tmax). Temperature stability formula.
