Currentmode control for a quadratic boost converter with a single switch
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In this paper, a methodology for controller design of a quadratic boost converter is given using average currentmode control. It is shown that the transfer function of the first inductor currenttoduty ratio is minimum phase; thus, this inductor current is selected for feedback purposes. For the inner loop, a current gain and a high gain compensator are selected where the corresponding sintonization procedure is given. For the outer loop, a conventional PIcontroller is designed. The designoriented analytic results allow the designer to easily pinpoint the control circuit parameters that optimize the converter%27s performance. At the end, experimental results are given for a 49 W switching regulator where step changes between 10%25 to full load are shown. ©2007 IEEE.

In this paper, a methodology for controller design of a quadratic boost converter is given using average currentmode control. It is shown that the transfer function of the first inductor currenttoduty ratio is minimum phase; thus, this inductor current is selected for feedback purposes. For the inner loop, a current gain and a high gain compensator are selected where the corresponding sintonization procedure is given. For the outer loop, a conventional PIcontroller is designed. The designoriented analytic results allow the designer to easily pinpoint the control circuit parameters that optimize the converter's performance. At the end, experimental results are given for a 49 W switching regulator where step changes between 10%25 to full load are shown. ©2007 IEEE.
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Boost converter; Currentmode control; Quadratic converters; Switchmode DCDC converters Electric converters; Power converters; Quadratic programming; Transfer functions; Average currentmode control; Boost converter; BOOST converters; Control circuits; Controller designs; Conventional PI; Current gains; Current mode controlled; Currentmode control; Duty ratio; Full loads; High gain; Inductor currents; Minimum phase; Outer loop; Quadratic converters; Single switch; Step changes; Switchmode DCDC converters; Switching regulators; Power electronics
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