DC Regulated Power Supplies Toward High Precision
DC Voltage Regulator With the development of electronic equipment in the direction of high precision, high stability and high reliability, the power supply of electronic equipment has put forward high requirements.
Quality Indicators
(1)Voltage regulation rate SV.Voltage regulation rate is an important index to characterize the advantages and disadvantages of DC regulated power supply voltage stabilization performance, also known as voltage stabilization coefficient or stabilization coefficient, which characterizes the degree of stability of the output voltage VO of DC regulated power supply when the input voltage VI varies, and is usually expressed as a percentage of the relative change of the input and output voltages per unit of the output voltage. Voltage regulation rate formula.
(2) current adjustment rate SI. current adjustment rate is a major self-indicator to reflect the load capacity of DC regulated power supply, also known as current stability coefficient. It characterizes when the input voltage is constant, DC regulated power supply to the load current (output current) due to changes in the output voltage caused by the fluctuation of the suppression ability, in the specified conditions of the load current change, usually to the unit output voltage under the output voltage of the output voltage change in the percentage of the value to indicate the DC regulated power supply current adjustment rate. Current adjustment rate formula.
(3) Ripple rejection ratio SR. Ripple rejection ratio reflects the DC regulated power supply on the input side of the introduction of the utility voltage rejection ability, when the DC regulated power supply input and output bars DC regulated power supply components remain unchanged, the ripple rejection ratio is often expressed in terms of the ratio of input ripple voltage peak-peak to the peak-peak value of the output ripple voltage, usually expressed in decibel Number of said, but sometimes can also be expressed as a percentage, or directly expressed in terms of the ratio of the two.
(4) temperature stability K. The temperature stability of the integrated DC regulated power supply is based on the specified DC regulated power supply operating temperature Ti maximum change range (Tmin ≤ Ti ≤ Tmax) DC regulated power supply output voltage of the relative change in the percentage value. Temperature stability formula.、
