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This paper presents a novel current mode controller for the synchronous rectifier Buck (SR-Buck) converter. In term of the discrete equation, the required duty cycle can be calculated directly with two parallel terms: the current term and the voltage term. Based on the analysis of the proposed algorithm, the small signal model of the closed-loop system is derived, thus a proportional and integral...
nowadays switch mode power supplies (SMPSs) have already widely adopted fully digital control. The paper proposes a concise and effective data transmission protocol based on the multi- resolution feedback method (MRFM) in the application of multiple isolated power supplies. The MRFM can compress sampling data of the 10-bit analog-to-digital converter (ADC) into the 4-bit code, and greatly improves...
The paper proposes an efficient data transmission protocol for multiple isolated power supplies based on multi-resolution feedback method (MRFM). Adopting the nonlinear sampling method and the digital control technology, the MRFM can reduce the data bits of controlled variables without affecting the control accuracy and dynamic response, and can greatly improve the data transmission rate. In this...
A new digital control strategy of parallel duty cycle control (PDC) for power factor correction (PFC) is presented and analyzed in this paper. Based on this new control strategy, the duty cycle determination algorithm includes the current term and the voltage term, which can be calculated in parallel and requires only one multiplication and three additions or subtractions operations in digital implementation...
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