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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yan Lu Wing-Hung Ki Patrick Yue, C. |
| Copyright Year | 1986 |
| Abstract | A fully integrated low-dropout-regulated step-down multiphase-switched-capacitor DC-DC converter (a.k.a. charge pump, CP) with a fast-response adaptive-phase (Fast-RAP) digital controller is designed using a 65-nm CMOS process. Different from conventional designs, a low-dropout regulator (LDO) with an NMOS power stage is used without the need for an additional stepup CP for driving. A clock tripler and a pulse divider are proposed to enable the Fast-RAP control. As the Fast-RAP digital controller is designed to be able to respond faster than the cascaded linear regulator, transient response will not be affected by the adaptive scheme. Thus, light-load efficiency is improved without sacrificing the response time. When the CP operates at 90 MHz with 80.3% CP efficiency, only small ripples would appear on the CP output with the 18-phase interleaving scheme, and be further attenuated at VOUT by the 50-mV dropout regulator with only 4.1% efficiency overhead and 6.5% area overhead. The output ripple is less than 2 mV for a load current of 20 mA. |
| Sponsorship | IEEE Power Electronics Society |
| Starting Page | 1294 |
| Ending Page | 1303 |
| Page Count | 10 |
| File Size | 1025339 |
| File Format | |
| ISSN | 08858993 |
| Volume Number | 31 |
| Issue Number | 2 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2016-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | MOS devices DC-DC power converters Voltage control Regulators Charge pumps Clocks Noise voltage regulator DC-DC converter switched capacitor power converter (SCPC) low dropout regulator (LDO) digital controller power supply rejection (PSR) DC–DC converter low-dropout regulator (LDO) switched-capacitor power converter (SCPC) |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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