Step-up continuous mode DC-to-DC converter with integrated fuzzy logic current control

摘要

A step-up continuous-mode DC-to-DC converter with integrated current control, comprising means (3) for comparing a voltage signal (Vout) in output from said converter and a reference signal (Vref) for generating an error signal (Ve) and means (7) for generating a compensation ramp which are suitable to generate a ramp signal which is added to a signal which is proportional to a current ramp that flows across the converter, the signal in output from the comparator means and the signal obtained from the sum being sent to additional comparator means (6), the output whereof, together with an oscillator signal (8), is sent to locking means (9) for driving a power transistor (20) of the converter, characterized in that fuzzy logic control means (11) are interposed between the comparator means (3) and the additional comparator means (6), the fuzzy logic control means (11) receiving in input the error signal output by the comparator means (3) and emitting in output a signal (Ve) which depends on the variation of the error signal over time to be sent to the additional comparator means (6).