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홈 | MPW / CDC | IP Library

"한국 반도체산업의 경쟁력"

IDEC에서 설계인력양성의 발판을 마련하겠습니다.

IP명 A Time-Based MPPT Circuit for IoT Applications
Category Analog Application PMIC, energy harvest
실설계면적 2.5㎛ X 2㎛ 공급 전압 3.3V
IP유형 Hard IP 동작속도 10MHz
검증단계 Silicon 참여공정 HM-2101
IP개요 This chip presents a highly efficient Time-Based Maximum-Power-Point-Tracking (TB-MPPT) integrated-circuit. Conventional TB-MPPT circuit shows unstable status (oscillation) near the Maximum Power Point (MPP), which causes the degradation of the overall power tracking efficiency. To overcome this critical issue, the proposed circuit separates the tracking operation into two periods, and it utilizes convergence range averaging technique with an adaptive perturbation step according to each control signal to accurately extract the current power level without oscillation problem. This work will be fabricated in 180 nm CMOS process to demonstrate advantages of the proposed scheme. With 0.47V 12mW Photovoltaic (PV) cell, the expected measurement results are 94.2% of MPPT efficiency and 91.6% of power conversion efficiency (PCE). It occupies silicon chip area of 5 mm2.
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