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An ultra-low-quiescent-current dual-mode digitally-controlled buck converter IC for cellular phone applications
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
An ultra-low-quiescent-current dual-mode digitally-controlled buck converter IC for cellular phone applications
作者:
Xiao, Jinwen.
面頁冊數:
121 p.
附註:
Chair: Seth R. Sanders.
附註:
Source: Dissertation Abstracts International, Volume: 65-02, Section: B, page: 0949.
Contained By:
Dissertation Abstracts International65-02B.
標題:
Engineering, Electronics and Electrical.
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3121762
ISBN:
0496691139
An ultra-low-quiescent-current dual-mode digitally-controlled buck converter IC for cellular phone applications
Xiao, Jinwen.
An ultra-low-quiescent-current dual-mode digitally-controlled buck converter IC for cellular phone applications
[electronic resource] - 121 p.
Chair: Seth R. Sanders.
Thesis (Ph.D.)--University of California, Berkeley, 2003.
This dissertation presents a low-quiescent-current dual-mode digitally-controlled buck converter IC for cellular phone applications. In cellular phones, the load current demanded by the on-board circuitry varies from below 0.1 mA up to a few hundred mA, reflecting operation in standby and active (talk) modes. Thus, high efficiency over a wide load range is of high priority for power management units, since the total energy is limited by the capacity of a single cell Li-ion battery. A dual-mode buck converter IC, implemented with a 0.25-mum CMOS process, takes 2 mm2 active area and demonstrates equal or better regulation performance compared to state-of-the-art analog switchers. A very low quiescent current of 4 muA is achieved experimentally, resulting in a more than three-fold reduction compared to the leading state-of-the-art analog controllers. Consequently, a high efficiency, exceeding 70%, is achieved over a wide load range between 0.1 and 400 mA.
ISBN: 0496691139Subjects--Topical Terms:
226981
Engineering, Electronics and Electrical.
An ultra-low-quiescent-current dual-mode digitally-controlled buck converter IC for cellular phone applications
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This dissertation presents a low-quiescent-current dual-mode digitally-controlled buck converter IC for cellular phone applications. In cellular phones, the load current demanded by the on-board circuitry varies from below 0.1 mA up to a few hundred mA, reflecting operation in standby and active (talk) modes. Thus, high efficiency over a wide load range is of high priority for power management units, since the total energy is limited by the capacity of a single cell Li-ion battery. A dual-mode buck converter IC, implemented with a 0.25-mum CMOS process, takes 2 mm2 active area and demonstrates equal or better regulation performance compared to state-of-the-art analog switchers. A very low quiescent current of 4 muA is achieved experimentally, resulting in a more than three-fold reduction compared to the leading state-of-the-art analog controllers. Consequently, a high efficiency, exceeding 70%, is achieved over a wide load range between 0.1 and 400 mA.
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