完整后设资料纪录
DC 栏位语言
dc.contributor.author庄咏竣en_US
dc.contributor.author陈科宏en_US
dc.date.accessioned2014-12-12T03:03:33Z-
dc.date.available2014-12-12T03:03:33Z-
dc.date.issued2007en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#GT009412580en_US
dc.identifier.urihttp://hdl.handle.net/11536/80713-
dc.description.abstractTFT-LCD面版和数位相机等等电子产品,在近几年间受到广大的消费者的欢迎。而电源管理系统的使用可以达到提供稳定的供应电压源给予这些电子产品以及延长电池寿命的功用。
缓起动技术对于电源管理系统处在启动状况是很重要的,特别是对于直流转直流稳压器。缓启动技术不但可以有效地降低初始的入侵电流以避免系统受到破坏,也具有确保转换器启动成功的功用。传统的缓启动技术是利用外挂大电容产生缓慢上升的控制讯号来完成启动。然而,此大电容却会增加系统的成本与面积。
本论文提出具非线性回路控制缓启动技术产生从零到最大限制电流位准的步阶电流限制讯号来完成转换器的缓启动。因为每一个特定的电流限制位准都会对应到相对的输出电压,因此我们可以藉此把输出电压升到所设计的位准。此技术在任何的负载条件下不但具有高度的限制固定电流能力,也利用着无电容缓启动的设计来减少转换器的输入输出接脚以达到降低系统成本的目标。
此提出的缓启动技术是建构在电流模式控制的直流转直流升压转换器。藉由电流模式的控制,使转换器拥有很好的效能相对于电压模式的控制。除此之外,所设计转换器的实现是藉由联电0.35-□m 制程技术。其效率表现可达90%在重负载的条件之下。
zh_TW
dc.description.abstractThe electronic devices, such as TFT-LCD panel and digital camera, are great prevalent for customer market in the recent year. In order to provide the regulated supply voltage and extend the battery life, the power management system is utilized.
The soft-start technique is an important feature for power management system especially for the power-on sequence of dc-dc converters. It not only diminishes the inrush current to protect the converter from occurring damage but also ensure the converter to start up successfully. The conventional soft-start technique uses a large off-chip capacitor to generate gently reference voltage. However, the large off-chip capacitor occupies an external I/O pin to increase the cost and footprint area of the power module.
In this thesis, the proposed soft-start technique with nonlinear loop control provides the current-limit levels increased from zero up to the maximal current-limit value in design current steps. As a result, the specific output voltages can be raised up by characteristic current steps. The proposed technique not only has excellent constant peak current limiting capacity for any load conditions to diminish initial inrush current efficiently, but also reduces the numbers of the external I/O pins to decrease the cost of the converter without needing any external capacitors.
The proposed soft-start technique is based on the current-mode controlled boost converter with better performances than those of voltage-mode controlled converter. The converter implementation is simulated and fabricated by UMC 0.35-□m CMOS technology and the efficiency is 90% in the heavy load condition.
en_US
dc.language.isozh_TWen_US
dc.subject缓启动zh_TW
dc.subject直流转直流转换器zh_TW
dc.subject非线性控制回路zh_TW
dc.subjectsoft starten_US
dc.subjectdc-dc converteren_US
dc.subjectnonlinear control loopen_US
dc.title具非线性控制回路缓启动技术之直流转直流转换器zh_TW
dc.titleThe Soft-Start Technique with Nonlinear Control Loop for Integrated DC-DC Convertersen_US
dc.typeThesisen_US
dc.contributor.department电控工程研究所zh_TW
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