公开(公告)号：US20140253080A1

公开(公告)日：2014-09-11

申请号：US13793703

申请日：2013-03-11

Applicant: QUALCOMM INCORPORATED

Inventor： Xufeng Jiang ,  Chunlei Shi ,  Sugato Mukherjee

IPC: G05F1/62

CPC classification number: G05F1/62 ,  H02M3/156 ,  H02M3/1588 ,  H02M2001/0009 ,  H02M2001/0025 ,  H02M2001/0032 ,  Y02B70/1466 ,  Y02B70/16

Abstract: A method and apparatus for determining the entry and exit from a pulse skipping mode in a power supply is provided. The power supply may incorporate a buck regulator. The method begins when current is sensed at an inductor of a power supply. This sensed current is then compared with a predetermined threshold current value. If the comparison reveals that the current is below the predetermined threshold current value, a pulse skipping mode is entered. If the current is found to be above the predetermined threshold the pulse skipping mode is not entered and normal operation continues. The apparatus includes a transconductance amplifier, an offset voltage source, a reference power supply reference voltage source, first and second voltage comparators, and a processor.

Abstract translation: 提供了一种用于确定电源中的脉冲跳过模式的进入和退出的方法和装置。 电源可以并入降压调节器。 当在电源的电感器处感测到电流时，该方法开始。 然后将该感测电流与预定的阈值电流值进行比较。 如果比较显示电流低于预定阈值电流值，则输入脉冲跳跃模式。 如果发现电流高于预定阈值，则不进入脉冲跳跃模式，并且正常操作继续。 该装置包括跨导放大器，偏移电压源，参考电源参考电压源，第一和第二电压比较器以及处理器。