本論文題目為Mini LED背光應用之數位式升壓型轉換器研究與設計，內容詳細探討了升壓型轉換器其功率級架構與右半平面零點(Right-hlaf-plane zero)對於暫態行為的影響，同時介紹變頻操作之漣波控制的原理與分類，並說明其優劣。再來於數位文獻中介紹雙迴路控制之升壓型轉換器，透過暫態迴路能跳脫系統頻寬之限制，減輕右半平面零點之影響，並加速暫態的回復時間。本作品之暫態迴路採用偏差限制控制技術(Fast and Deviation-Constrained Control)，以輕轉重載為例，開關全開直到電感電流達到新穩態值後，以變頻且固定工作週期操作為基礎的切換式升壓轉換器。透過保持固定的工作週期(Duty Cycle)，可以改善傳統單迴路控制之升壓轉換器受到系統右半平面零點影響，進而加速暫態回復時間(Recovery time)且能抑制輸出電壓振福變化(Overshoot/Undershoot)。
本論文作品採用數位式雙迴路控制之升壓型轉換器，其保留穩態迴路的零穩態誤差的優點，並於暫態時切換至暫態迴路，限制輸出電壓振幅變化並快速回復到系統穩態，最後以FPGA搭配功率級板進行系統驗證與量測，再透過晶片實作實現數位控制器並進行量測，證明此數位暫態抑制技術能大幅度改善系統的暫態性能，與傳統單迴路系統相比能加速89%回復時間且具備暫態電壓抑制能力。

The topic of this thesis is the study and design of digital boost converter for Mini LED Backlighting applications. We introduce system architecture of Mini LED applications and power supply standard, then discuss the influence of the right half-plane zero(RHPZ) and the transient behavior of the boost converter in detail. Meanwhile, We introduce ripple-based control in detail and compare its pros and cons.
Then, We introduce digital dual-loop control of boost converter which using transient loop to avoid system bandwidth limit to reduce the RHPZ effect and accelerate transient recovery time. Therefore, this thesis collates many paper about fast transient and minimum output voltage deviation of analog and digital control. Analyze system control methods and compare advantages and disadvantages. It is concluded that the use of fast and deviation-constrained control technology can achieve an excellent improvement in transient effects compared to the usual traditional linear control.
According to this technology, this thesis adopts dual-loop control in digital boost converter, which retains the advantages of zero-state error of steady loop and switches to fast and deviation-constrained control in transient state to suppress output voltage amplitude variation and quickly return to system steady state. The overall architecture implementation requires only one voltage feedback ADC, which greatly reduces the hardware cost and the energy consumed. Finally, we use FPGA and chip as the experimental platform and performing system verification and measurement, it is proved that the control technology can greatly improve the transient performance of the system, and the performance is improved by 89% compared with the traditional linear control system.

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