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| A Family of Switching Capacitor Regulators |
| Gu Ling, Jin Ke, Cao Wenjing, Ruan Xinbo |
| Nanjing University of Aeronautics & Astronautics Nanjing 210016 China |
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Abstract The traditional PWM DC-DC converter’s dynamic performance is limited by the inductor. However, the switching capacitor converter transmits energy by the capacitor directly instead of the inductor. Therefore, it has good dynamic characteristics. But its output voltage is fixed and restricted by the circuit’s structure. In addition, there is large instantaneous rushed current. To combine the above two converters, this paper abstracts a family of switching capacitor basic cells and switching inductor basic cells, combines the two kinds of cells, and then proposes a family of switching capacitor regulators. Each of the converters has both the switching capacitor mode and the switching inductor mode. The converter uses the capacitor as the component of transmitting energy. So it has good dynamic performance. The switching inductor mode makes it overcome the shortcoming of the switching capacitor converters and its output voltage can be regulated by the duty cycle of the switches. A 1.2V/130A output voltage regulator module based on one of the proposed topologies was built in the lab to verify the theoretical analysis.
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Received: 07 March 2011
Published: 20 March 2014
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2012, Vol. 27 
