面向99效率99占空比超高功率密度的电路技术.pdf

Circuit Techniques Towards 99% Efficiency, 99% Duty Ratio and Ultra-High Power Density D. Tan, PhD, F-IEEE January 17, 2020 Glad to be back to APEC seminars ∗ Don’s APEC seminars ∗ D. Tan, “Circuit techniques towards 99% efficiency, 99% duty ratio, and ultra-high power density,” #13, IEEE APEC, 2020 ∗ D. Tan, “The forward converter: Isolated gate drives,” #S9, IEEE Applied Power Electronics Conference (APEC), 2007 ∗ D. Tan, “The forward converter: Practical input and output filter design,” #S18, IEEE APEC, 2004 ∗ D. Tan, “The forward converter: from the classic to the contemporary,” #S6, IEEE APEC, 2001 ∗ D. Tan, “Linear and nonlinear current programming,” #S10, IEEE APEC, 1998 ∗ R. D. Middlebrook D. Tan, “Feedback, multi-loop, and current programming,” #S7, IEEE APEC, 1994 2 Towards 99% Efficiency and 99% Duty Ratio 1. Introduction 3 Where are we going? Topology is dead 99% efficiency is not enough! Perfect switch is not enough Near adiabatic is the future Ultra-high power density demands both 99% efficiency and 99% duty ratio 4 Abstract ∗Abstract: ∗ Emerging switched-capacitor power circuits have obtained unprecedented performances in power efficiency and power density. Consequently they