This paper presents a small-signal analysis of the power stage of a tapped-inductor pulse-width modulated (PWM) buck dc-dc converter, operating in continuous-conduction mode (CCM). Using the circuit averaging technique, the small-signal model of the power stage is developed. The derivation of duty cycle-to-output voltage and input-to-output voltage transfer functions are presented. An example tapped inductor buck dc-dc converter is considered. The time-domain and frequency-domain characteristics of the converter are analyzed, illustrated, and discussed. The theoretical results are validated using circuit simulations.
Duty Cycle and Input-to-Output Voltage Transfer Functions of Tapped-Inductor Buck DC-DC Converter / Saini, Dalvir K.; Chadha, Ankit; Ayachit, Agasthya; Reatti, Alberto; Kazimierczuk, Marian K.. - ELETTRONICO. - (2018), pp. 1-5. (Intervento presentato al convegno IEEE ISCAS 2018) [10.1109/ISCAS.2018.8351323].
Duty Cycle and Input-to-Output Voltage Transfer Functions of Tapped-Inductor Buck DC-DC Converter
Ayachit, Agasthya
;Reatti, Alberto
;
2018
Abstract
This paper presents a small-signal analysis of the power stage of a tapped-inductor pulse-width modulated (PWM) buck dc-dc converter, operating in continuous-conduction mode (CCM). Using the circuit averaging technique, the small-signal model of the power stage is developed. The derivation of duty cycle-to-output voltage and input-to-output voltage transfer functions are presented. An example tapped inductor buck dc-dc converter is considered. The time-domain and frequency-domain characteristics of the converter are analyzed, illustrated, and discussed. The theoretical results are validated using circuit simulations.
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