| 摘要 |
<p>[Problem] To estimate the output current value without detecting the output current, and to determine an ON time or a TURN OFF time on the basis of the estimated value and an output voltage and an input voltage. [Solution] A control unit determines an ON time on the basis of a digital input voltage value Ei(n), a digital output voltage value Eo(n), and a digital output current prediction value Io(n) *. The control unit predicts the digital output current value in an nth (normal, present) switching cycle on the basis of (i) the digital input voltage value Ei(n) and the digital output voltage value Eo(n) in the nth switching cycle, and (ii) the calculation result Ton(n-1) for the ON time in the (n-1)th switching cycle. The control unit uses the predicted digital output current prediction value Io(n) * to generate the ON time NTon(n) in the nth switching cycle.</p> |
