DC-DC converter with automatic inductor detection

专利名称：DC-DC converter with automatic inductor

detection for efficiency optimization

发明人：Gerhard Thiele,Konrad Wagensohner,Josy

Bernard

申请号：US13028034申请日：20110215公开号：US08436601B2公开日：20130507

专利附图：

摘要：A DC-DC converter has high-side power and low-side power transistors

connected in series between supply terminals, an inductor connected between the power

transistors and an output terminal. A comparator compares the output voltage with areference voltage. A detector detects when inductor current approaches zero. A timer isconfigured to determine a minimum ON time of the high-side power transistor optimizedfor a particular value inductor. A current detector detects current flow in the back-gatediode of the low-side power transistor. timer is configured to determine an overridingON time in response to the back-gate current detector. Logic provides control signals togate power transistors in response to the comparator and the longer one of theminimum ON time and the overriding ON time. The minimum ON time for the high-sidepower transistor is adjusted in response to the actual inductance of the inductor.

申请人：Gerhard Thiele,Konrad Wagensohner,Josy Bernard

地址：Dachau DE,Mauern DE,Freising DE

国籍：DE,DE,DE

代理人：William B. Kempler,Wade J. Brady III,Frederick J. Telecky, Jr.

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