Dynamic Characteristics of Switching DC-DC Power Converter with Static Model Reference

A New Model Control DC-DC Converter to Improve Dynamic Characteristics

“…N1 is substituted for Eqs. (8) and (9) corresponding to the static model control [6] and then NR,,1 is transferred to the subtracter in Fig. 2.…”

“…The problem which we have to consider next is to present the typical digital control method. We have already reported the novel digital control method "Static Model Reference" [6] which is the smart digital reference of output voltage. In this case, the VCO (Voltage controlled oscillator) is used as both A-D signal converter and digital PWM generator [7], [8].…”

“…fEo is sent to the comparator in the P-controller, the up-counter in the D-controller and a new model controller. In I and D controllers, fEo is counted during the pulse counting interval fTs and the number N11 of pulses is generated [6]- [8]. In this case, the suffix n denotes the n-th period of the switching period Ts.…”

“…are equal to the reference values NR,112 in[6] when M Transient responses in step change of the load resistor R, taking KD as a parameter. Transient responses in step change of the load resistor R, taking K, as a parameter.…”

A novel digital boundary current control AC-DC converter

“…Especially, the ac-dc converter of boundary current mode operation, in theory the input power factor is unit. [1]- [3]. Therefore, the high performance, high-reliability and high power efficiency are expected, the digital control method ac-dc converter attracts attention In the method that an analog IC is used, the zero-cross point is detected by using a comparator.…”