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IP명 A Reconfigurable SC with Direct VOUT-Charging and -Discharging and Adaptive Switching Frequency Control for Fast and Power-Efficient Feedback Network
Category Analog Application PMIC
실설계면적 5㎛ X 5㎛ 공급 전압 1.8V
IP유형 Hard IP 동작속도 2MHz
검증단계 Silicon 참여공정 HM-2102
IP개요 This proposal presents a direct output voltage (VOUT) charging and discharging (DVCD) control scheme and adaptive switching frequency (ASF) control scheme for improving load transient response and power conversion efficiency (PCE) of reconfigurable switched-capacitor (SC) converters. ASF control scheme enables the reconfigurable SC converter to track optimum VCRs based on the output load current (IOUT). Removing the VOUTsensing time of conventional VCR feedback networks enables the converter to connect VOUT directly to the input supply voltage (VIN) or ground during the load-transient response. The proposed interface is implemented with a reconfigurable series-parallel SC converter, which regulates a 1.05–1.45 V of VOUT with a 1.8 V VIN. The reconfigurable series-parallel SC converter with the proposed control scheme achieves a peak PCE of 80.2% at 1 mA of output load current and maximum output power of 3.7 mW.
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