公开(公告)号：US20090167271A1

公开(公告)日：2009-07-02

申请号：US12396975

申请日：2009-03-03

申请人： BENJAMIM TANG ,  ROBERT T. CARROLL ,  SCOTT WILSON SOUTHWELL ,  KENNETH A. OSTROM ,  RICHARD C. PIERSON

发明人： BENJAMIM TANG ,  ROBERT T. CARROLL ,  SCOTT WILSON SOUTHWELL ,  KENNETH A. OSTROM ,  RICHARD C. PIERSON

IPC分类号： G05F1/10

CPC分类号： H02M3/1584

摘要： Disclosed is a multi-phase pulse width modulated voltage regulator and method in which transient voltage excursions or deviations that exceed the load line voltage by more than a predetermined amount are detected by an ATR circuit and a correction signal is applied. The correction signal is in the form of asynchronous pulses and the number of such pulses is a function of the magnitude of the voltage excursion as determined by the number of thresholds that are exceeded. Also disclosed is an adaptive voltage positioning (AVP) circuit and method for early detection of a transient event by sensing voltage changes at the load and adjusting the target voltage with pre-determined current values prior to the time that ATR event changes in the current at the load are detected. The AVP load line is pre-positioned for more precise current control. Also disclosed is an adaptive filter with adjustable frequency characteristics in response to an ATR event. Also disclosed is a pulse limiting circuit. Also disclosed is a tri-state implementation. Response to transient events is further improved with an external ATR circuit coupled to the load.

摘要翻译： 公开了一种多相脉宽调制电压调节器和方法，其中通过ATR电路检测超过负载线电压超过预定量的瞬态电压偏移或偏差，并且施加校正信号。 校正信号是异步脉冲的形式，并且这样的脉冲的数量是由超过的阈值的数量确定的电压偏移的大小的函数。 还公开了一种用于通过感测负载上的电压变化来早期检测瞬态事件的自适应电压定位（AVP）电路和方法，并且在ATR事件在电流当前变化的时刻之前用预定电流值调节目标电压 检测负载。 AVP负载线预先定位，以实现更精确的电流控制。 还公开了响应于ATR事件具有可调频率特性的自适应滤波器。 还公开了一种脉冲限制电路。 还公开了三态实现。 外部ATR电路耦合到负载，进一步提高对瞬态事件的响应。

公开(公告)号：US20090146643A1

公开(公告)日：2009-06-11

申请号：US12332707

申请日：2008-12-11

申请人： KENNETH A. OSTROM ,  TIMOTHY M. NG ,  BENJAMIM TANG

发明人： KENNETH A. OSTROM ,  TIMOTHY M. NG ,  BENJAMIM TANG

IPC分类号： G01R19/00

CPC分类号： H02M3/156 ,  H02M2001/0009

摘要： Methods and apparatus for current sensing according to various aspects of the present invention sense the current in a circuit, such as an inductor circuit. The current sensing systems may comprise an RC element connected such that the RC time constant matches the L/R time constant of the inductor. The current sensor may be configured to generate voltages that are proportional to the instantaneous current in the inductor with scaled gain for a wide range of inductor self resistance (DCR) values.

摘要翻译： 根据本发明的各个方面的用于电流感测的方法和装置感测诸如电感器电路的电路中的电流。 电流感测系统可以包括RC元件连接，使得RC时间常数与电感器的L / R时间常数匹配。 电流传感器可以被配置为产生与电感器中的瞬时电流成比例的电压，其具有用于宽范围的电感器自身电阻（DCR）值的缩放增益。