A switched capacitor deadtime controller for DC-DC buck converter
2015 IEEE International Symposium on Circuits and Systems (ISCAS)(2015)
摘要
In this paper, it introduces a proposed hybrid control system which can simultaneously optimize deadtime and reverse inductor current with both the proposed Switched Capacitor Delay Deadtime Controller (SCD-DTC) and Unbalanced Input Pair Zero Current Detector (UIP-ZCD). Furthermore, the total silicon chip area of the hybrid control system occupies an area of 1.44mm
2
. The estimated power efficiency is 95.8% which has taken into account of losses due to wire bonding, package leads, PCB traces and other parasitic effects. The V
IN_BUCK
is 2.8-3.3V and being regulated to a V
OUT
value of 1.8V while driving 5-30mA of load current. The proposed SCD-DTC implemented in the buck converter minimizes the duration of body diode conduction to be <; 0.1ns.
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关键词
switched capacitor delay deadtime controller,DC-DC buck converter,hybrid control system,reverse inductor current,SCD-DTC,unbalanced input pair zero current detector,UIP-ZCD,wire bonding,package leads,PCB traces,body diode conduction
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