전자공학회논문지S (Journal of the Korean Institute of Telematics and Electronics S)
- 제34S권6호
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- Pages.85-93
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- 1997
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- 1226-5837(pISSN)
Watkins-Johnson 컨버터의 동작특성 해석
Operation Analysis of th Watkins-Johnson Converter
초록
This paper analyzes the steady-state and dynamic characteristics of the watkings-johnson converter. the major contributions of this paper includ identification of the following characteristics unique to the watkins-johnson converter: (1) The output voltage of the converter is nearly constant at the continous conduction mode (CCM), and at discontinousou conduction mode (DCM) it decreses linerly as the output curretn increases. (2) The control-to-output transfer function is a second-order one with a left-half-plane (LHP) zero determined by the combination of the output capacitor and equivalent series resistor of the converter. This LHP zero signinificantly improves the stability of the converter. (3) The control-to-output transfer function reduces to a first-order one, as the converter moves from CCM to DCM. (4) The parastic resistance of the inductor does not cause any significant influence on poles and zeros of the transfer function.
키워드