Closed-Form Operational Boundaries for Buck Converters With Constant On-Time Control

被引：2

作者：

Bizzarri, Federico ^{[1
,2
]}

Nora, Paolo ^{[3
]}

Brambilla, Angelo ^{[1
]}

机构：

[1] Politecn Milan, DEIB, I-20133 Milan, Italy

[2] Univ Bologna, Adv Res Ctr Elect Syst Informat & Commun Technol, I-41026 Bologna, Italy

[3] Microchip Technol Srl, I-20025 Legnano, Italy

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2021年 / 68卷 / 10期

关键词：

Switches; Buck converters; Steady-state; Hysteresis; Control systems; Resistance; Manifolds; Switched mode power supplies; DC-DC power converters; nonlinear circuits; bifurcation; switching circuits; OUTPUT CAPACITOR;

D O I：

10.1109/TCSII.2021.3068900

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this brief, we provide three operational boundaries in closed analytical form for a Constant ON-Time buck converter working in continuous current mode. Two of these boundaries are related to the sudden appearance of pulse-bursting induced by either (i) the hysteresis of the comparator that drives the input of the block implementing the circuit control algorithm (hysteresis condition), or (ii) by a period doubling bifurcation (bouncing condition). The third operational boundary corresponds to the saturation condition of the circuit controller which does no longer guarantee an OFF-time larger than the minimum allowed one. These stability boundaries are provided both for the adaptive and the fixed ON-time working modes.

引用

页码：3331 / 3335

页数：5

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