公开(公告)号：US20090278516A1

公开(公告)日：2009-11-12

申请号：US12436136

申请日：2009-05-06

申请人： Hrishikesh BHAGWAT ,  Rupak GHAYAL ,  Saumitra SINGH ,  Pawan GUPTA ,  Prakash EASWARAN

发明人： Hrishikesh BHAGWAT ,  Rupak GHAYAL ,  Saumitra SINGH ,  Pawan GUPTA ,  Prakash EASWARAN

IPC分类号： G05F1/10

CPC分类号： H02M3/1588 ,  Y02B70/1466

摘要： A transient recovery circuit for switching devices. The transient recovery circuit includes a detecting circuit for detecting a rapid transient in an output voltage of a switching device by detecting a rate of the output voltage transient; an auxiliary controlling circuit in a feedback loop of the switching device for correcting the output voltage by changing a bandwidth of the feedback loop if the rapid transient is detected; and an initializing circuit for initializing the feedback loop to expected operating points in a continuous conduction mode after correcting the output voltage.

摘要翻译： 用于开关器件的瞬态恢复电路。 瞬态恢复电路包括检测电路，用于通过检测输出电压瞬变的速率来检测开关装置的输出电压中的快速瞬变; 所述开关装置的反馈环路中的辅助控制电路，用于通过在检测到所述快速瞬变时改变所述反馈回路的带宽来校正所述输出电压; 以及用于在校正输出电压之后将连续导通模式中的反馈回路初始化为期望工作点的初始化电路。

公开(公告)号：US20120176112A1

公开(公告)日：2012-07-12

申请号：US13082420

申请日：2011-04-08

申请人： Saumitra SINGH ,  Rupak Ghayal ,  Ravindra Kumar N

发明人： Saumitra SINGH ,  Rupak Ghayal ,  Ravindra Kumar N

IPC分类号： G05F1/10

CPC分类号： G05F1/573 ,  G05F3/26

摘要： A circuit for sensing load current of a voltage regulator. The circuit includes a power transistor and a minor transistor. A first transistor sizing circuit is coupled to the power transistor and is operable to control size of the power transistor based on a bias voltage of the power transistor, thereby regulating a first voltage for varying load conditions. The circuit also includes a feedback amplifier coupled to the power transistor and the mirror transistor. A transistor is coupled to the feedback amplifier and the mirror transistor. An analog to digital converter (ADC) is coupled to the transistor. A second transistor sizing circuit is coupled to the mirror transistor, the transistor, and the ADC. The second transistor sizing circuit is responsive to an output voltage to control size of the minor transistor, thereby ensuring that accuracy of output voltage sensed by ADC is not limited by ADC's resolution.

摘要翻译： 用于感测电压调节器的负载电流的电路。 电路包括功率晶体管和次级晶体管。 第一晶体管尺寸电路耦合到功率晶体管，并且可操作以基于功率晶体管的偏置电压来控制功率晶体管的尺寸，从而调节用于变化负载条件的第一电压。 电路还包括耦合到功率晶体管和反射镜晶体管的反馈放大器。 晶体管耦合到反馈放大器和反射镜晶体管。 模数转换器（ADC）耦合到晶体管。 第二晶体管尺寸电路耦合到镜像晶体管，晶体管和ADC。 第二晶体管尺寸电路响应于输出电压以控制次级晶体管的尺寸，从而确保ADC感测的输出电压的精度不受ADC的分辨率的限制。