Patent Document ID: 8493046
Application ID: 13498289
Patent Flag: 1

Claim One:
1. A control device for a DC/DC converter, which obtains at least one of an output voltage value, an output current value, an input voltage value, an inductor current value, and a capacitor current value of the DC/DC converter, and transmits a switch on•off instruction signal to a drive circuit, the control device comprising: a feedback controller which generates a first time value for switch-off timing as the amount of feedback control from the at least one of the output voltage value, the output current value, the input voltage value, the inductor current value, and the capacitor current value of the DC/DC converter, a machine learning controller which generates a second time value for switch-off timing as the amount of control from the at least one of the output voltage value, the output current value, the input voltage value, the inductor current value, and the capacitor current value of the DC/DC converter, and a difference time calculator which obtains a difference between the first time value from the feedback controller and the second time value from the machine learning controller, and transmits a difference signal to the drive circuit, wherein the machine learning controller multiplies a deviation between a control target value at a certain sampling and a control estimation value obtained from learning history by a weight of α=A·f(n·λ), where A is a factor (except for zero) for suppressing the first undershoot or overshoot, f(n, λ) is a damping function, λ is a factor (positive constant except for zero) for suppressing the second overshoot or undershoot, and n is an integer indicating the nth sampling, and calculates the second time value by imparting a bias component to the weighted value.