The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
To improve efficiency over a wide load range, it is important to dynamically adjust the operational phase number in multiphase voltage regulators. This paper analyzes in detail the power loss profile of a synchronous multi-phase buck converter and defines the optimal phase number under different load conditions. Experimental results are provided to verify the theoretical results.
This paper addresses the current methodologies for lossless DCR sensing circuits typically used in high current switching mode voltage regulators for both single phase and multiple phase topologies. It introduces a new negative TC (NTC) capacitor which exhibits near linear capacitance loss with an increase of temperature and compensates for the positive change of the output inductor's DCR. The improvement...
In this paper, a novel self-driven zero-voltage-switching (ZVS) non-isolated full bridge (FB) converter is presented for 12 V input VRM application. Existing multiphase buck controller and buck driver can be directly used in the proposed converter. The advantages of the proposed converter are: (1) duty cycle extension; (2) significant switching losses reduction due to ZVS of all the control MOSFETs;...
A dual-voltage-loop digital control architecture with non-linear control algorithm is proposed in this paper. An adaptive voltage positioning (AVP) control unit was generalized to achieve adaptive voltage positioning, by generating dynamic voltage reference and dynamic current reference. A dynamic reference step adjustment method lowers the high speed requirement of reference updating clock; a non-linear...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.