What are the main specifications of a regulated power supply?
1. Quality indicators of voltage regulator
(1) Voltage regulation rate SV
Voltage regulation rate is an important indicator of the stability performance of a voltage regulator, also known as the stabilization coefficient or stability factor. It characterizes the degree to which the output voltage VO of the voltage regulator is stable when the input voltage VI changes. It is usually expressed as the percentage of relative change between the input and output voltages per unit output voltage.
(2) Current regulation rate SI
The current regulation rate is a major self indicator that reflects the load capacity of a voltage regulator, also known as the current stability coefficient. It characterizes the ability of a voltage regulator to suppress fluctuations in output voltage caused by changes in load current (output current) when the input voltage remains constant. Under the specified conditions of load current changes, the current regulation rate of the voltage regulator is usually represented by the white fraction of the output voltage change value per unit output voltage
(3) Ripple suppression ratio SR
The ripple suppression ratio reflects the ability of a voltage regulator to suppress the mains voltage introduced at the input terminal. When the input and output conditions of the voltage regulator remain unchanged, the ripple suppression ratio of the voltage regulator is often expressed as the ratio of the peak to peak value of the input ripple voltage to the peak to peak value of the output ripple voltage, usually expressed in terms of decimals, but sometimes it can also be expressed as a percentage or directly as the ratio of the two.
(4) Temperature stability
The temperature stability of an integrated voltage regulator is determined by the percentage value ()/Δ T of the relative change in the output voltage of the regulator within the specified operating temperature range Ti * (Tmin ≤ Ti ≤ Tmax).
