发明名称 |
Utilizing secondary-side conduction time parameters of a switching power converter to provide energy to a load |
摘要 |
A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the switching power converter utilizes a transformer to transfer energy from a primary-side of the transformer to a secondary-side of the transformer. In at least one embodiment, the switching power converter control parameters includes a secondary-side conduction time delay that represents a time delay between when the primary-side ceases conducting a primary-side current and the secondary-side begins to conduct a secondary-side current. In at least one embodiment, determining and accounting for this secondary-side conduction time delay increases the prediction accuracy of the secondary-side current value and accurate delivery of energy to a load when the controller does not directly sense the secondary-side current provided to the load. |
申请公布号 |
US9024541(B2) |
申请公布日期 |
2015.05.05 |
申请号 |
US201414201050 |
申请日期 |
2014.03.07 |
申请人 |
Cirrus Logic, Inc. |
发明人 |
Xie Yanhui;Kost Michael A.;Melanson John L.;He Zhaohui;Franklin Chris M. |
分类号 |
H05B37/02;H02M3/335;H05B33/08 |
主分类号 |
H05B37/02 |
代理机构 |
Terrile, Cannatti, Chambers & Holland, LLP |
代理人 |
Terrile, Cannatti, Chambers & Holland, LLP ;Chambers Kent B. |
主权项 |
1. A method comprising:
receiving one or more signals from a switching power converter; processing the one or more signals to determine an approximate secondary-side conduction time delay that begins when at least one of the signals indicates cessation of primary-side current conduction in a transformer of the switching power converter and ends when conduction begins in a secondary-side current in the transformer; determining the secondary-side current conduction time utilizing the secondary-side conduction time delay; determining an approximate amount of charge transferred to the secondary-side of the transformer using the determined secondary-side current conduction time; and generating a current control signal to control power delivered to a load coupled to the switching power converter based on the determined approximate amount of charge transferred to the secondary-side of the transformer. |
地址 |
Austin TX US |