One-Cycle Control Switched Capacitor Resonant Converter

The development of power supply integration has led a new tide in the area with the higher degree of integration. The switch capacitor converter that with the advantage of high power density and flexibility on integrated has been the ideal power supply for portable Consumer Electronics. Utilizing the micro inductance, the zero-current switch is realized in the resonance switch capacitor converter (RSCC), in the same time, the EMI is eliminated. Also, the total output power has been increased. Thanks for applying the PWM control into the RSCC, the output voltage is no more strictly enslaved to fixed voltage ratio, so the output performance is promoted. In this article, one-cycle control method has been applied in the resonance switch capacitor converter to improving dynamics response and to increasing capacity of resisting disturbance. The following researches have been done:1. The basic structure and working principle of capacity of resisting disturbance have been analyzed. The steady-state equation and control equation have been deduced. The results show that the output of resonance switch capacitor converter with one cycle control method and the electric charge quantity of resonance switch network has the linear function.2. The Compare simulation result of RSCC, RSCC with the PWM control, and RSCC with one cycle control shows that RSCC with one cycle control has high output performance and high capacity of resisting disturbance.3. Based on the theory analysis and simulation result, Experiment has been done to contrast RSCC with the PWM controlled to RSCC with one cycle control. The Experiment results confirm the conclusion mentioned above.4. Through the simulation, the sneak circuit is found which appears easily in the actual running of RSCC. First discover the sneak circuit of RSCC with adjustable output. Meanwhile propose a method of eliminating the sneak circuit and prove by simulation.