公开(公告)号：AU4753497A

公开(公告)日：1998-04-24

申请号：AU4753497

申请日：1997-10-03

Applicant: ANALOG DEVICES INC

Inventor： SZEPESI THOMAS S ,  BUXTON JOSEPH C ,  ZANSKY ZOLTON ,  BOWERS DEREK F

IPC: H02J7/10 ,  G05F1/56 ,  G05F3/22 ,  G05F3/26 ,  H02M3/155 ,  H03F3/21 ,  H03F3/45

Abstract: Operational transconductance amplifiers (OTAs) are combined at their outputs, yielding a single frequency compensation connection point. In a preferred embodiment, the output of each OTA is asymmetric, i.e., they can only source current and the OTA outputs are tied together to a constant current sink. Consequently, the OTA that sources more current controls the voltage of the merged output. This merged output point provides a voltage output that may be used as a frequency compensation point.

公开(公告)号：AU2002352960A1

公开(公告)日：2003-06-17

申请号：AU2002352960

申请日：2002-11-25

Applicant: ANALOG DEVICES INC

Inventor： SCHIFF TOD ,  BUXTON JOSEPH C ,  REDL RICHARD

IPC: H02M3/158

公开(公告)号：WO03049266B1

公开(公告)日：2004-05-13

申请号：PCT/US0238148

申请日：2002-11-25

Applicant: ANALOG DEVICES INC

Inventor： SCHIFF TOD ,  BUXTON JOSEPH C ,  REDL RICHARD

IPC: H02M3/158

CPC classification number: H02M3/1584

Abstract: An N-phase switching voltage regulator includes N current sensing elements (14, 16, 23, 24) which carry respective phase currents. The voltages present at the switch node sides of the sensing elements are summed and presented to an amplifier (28) which also receives the regulator's output voltage, to produce an output which is proportional to the regulator's total output current Iout. The invention also provides a means for direct insertion of total inductor output current information into a regulator's voltage-mode control loop, to provide active voltage positioning (AVP) for the output voltage. A voltage based on total inductor output current is summed with the regulator's reference voltage; this sum and Vout are applied to the voltage control error amplifier (114), the output of which is processed to operate the regulator's switches (100, 102). This enables the regulator's ouput to have a desired droop impedance and to provide AVP of Vout as a function of total filtered inductor output current Iout(fltr).

Abstract translation: N相开关电压调节器包括携带相应相电流的N个电流检测元件（14,16,23,24）。 存在于感测元件的开关节点侧的电压被求和并呈现给放大器（28），该放大器还接收调节器的输出电压，以产生与调节器的总输出电流Iout成比例的输出。 本发明还提供了一种用于将总电感器输出电流信息直接插入调节器的电压模式控制回路中的装置，以提供用于输出电压的有源电压定位（AVP）。 基于总电感输出电流的电压与调节器的参考电压相加; 该和和Vout被施加到电压控制误差放大器（114），其输出被处理以操作调节器的开关（100,102）。 这使得调节器的输出具有期望的下垂阻抗并且将Vout的AVP提供为总滤波的电感器输出电流Iout（fltr）的函数。

公开(公告)号：EP0929934A4

公开(公告)日：2001-08-01

申请号：EP97910066

申请日：1997-10-03

Applicant: ANALOG DEVICES INC

Inventor： SZEPESI THOMAS S ,  BUXTON JOSEPH C ,  ZANSKY ZOLTON ,  BOWERS DEREK F

IPC: H02J7/10 ,  G05F1/56 ,  G05F3/22 ,  G05F3/26 ,  H02M3/155 ,  H03F3/21 ,  H03F3/45 ,  H02J7/00 ,  H03F1/08

CPC classification number: G05F3/222 ,  H03F3/211 ,  H03F3/45071

Abstract: Operational transconductance amplifiers (OTAs) (10, 12) are combined at their outputs, yielding a single frequency compensation connection point (16). In a preferred embodiment, the output of each OTA is asymmetric, i.e., they can only source current and the OTA outputs are tied together to a constant current sink (14). Consequently, the OTA that sources more current controls the voltage of the merged output. This merged output point provides a voltage output that may be used as a frequency compensation point.

Abstract translation: 运算跨导放大器（OTA）（10,12）在它们的输出端被组合，产生单个频率补偿连接点（16）。 在一个优选实施例中，每个OTA的输出是不对称的，即它们只能提供电流，而OTA输出连接在一起形成一个恒流吸收器（14）。 因此，产生更多电流的OTA控制合并输出的电压。 该合并输出点提供可用作频率补偿点的电压输出。