公开(公告)号：US09083252B2

公开(公告)日：2015-07-14

申请号：US13658342

申请日：2012-10-23

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Erhan Ozalevli ,  David Daniels ,  Luthuli E. Dake

IPC: H02M3/335 ,  H02M1/00

CPC classification number: H02M3/33523 ,  H02M2001/0009

Abstract: A DC-DC converter includes a primary side sense circuit to detect a load current of the DC-DC converter based on reflected current from a secondary winding of the DC-DC converter to a primary winding of the DC-DC converter. A primary side diode models effects of a secondary side diode that is driven from the secondary winding of the DC-DC converter. An output correction circuit controls a switching waveform to the primary winding of the DC-DC converter based on feedback from the primary side sense circuit and the primary side diode.

Abstract translation: DC-DC转换器包括：初级侧感测电路，用于基于从DC-DC转换器的次级绕组到DC-DC转换器的初级绕组的反射电流来检测DC-DC转换器的负载电流。 初级侧二极管模拟从DC-DC转换器的次级绕组驱动的次级侧二极管的效应。 输出校正电路基于来自初级侧感测电路和初级侧二极管的反馈来控制到DC-DC转换器的初级绕组的开关波形。