公开(公告)号：US09614365B2

公开(公告)日：2017-04-04

申请号：US14220905

申请日：2014-03-20

申请人： Cisco Technology, Inc.

发明人： Weizhong Tang ,  Sung Kee Baek ,  Craig Zimmerman

IPC分类号： H02H7/12 ,  G06F1/26 ,  H04M19/08 ,  G06F11/16

CPC分类号： H02H7/1213 ,  G06F1/26 ,  G06F11/16 ,  G06F11/2015 ,  H03K17/0822 ,  H04M19/08

摘要： A system and method for preventing bus voltage sagging when an Oring-FET in an N+1 redundant power supply configuration is faulty during power up. Each redundant power supply includes an Oring-FET and a voltage comparator. The voltage comparator receives and compares an input voltage and an output voltage of the Oring-FET during power up. In the event input voltage is less than the output voltage, the Oring-FET is deemed to be operating properly and provides output to a communicatively coupled system bus in response to the input voltage reaching a predetermined voltage threshold level. In the event the input voltage is approximately equal to the output voltage, the voltage comparator assists in preventing inrush current from flowing from the communicatively coupled system bus and prevents voltage sagging on the communicatively coupled system bus when another redundant power supply configuration is providing power to the communicatively coupled system bus.

公开(公告)号：US10003187B2

公开(公告)日：2018-06-19

申请号：US15439725

申请日：2017-02-22

申请人： CISCO TECHNOLOGY, INC.

发明人： Weizhong Tang ,  Sung Kee Baek ,  Craig Zimmerman

IPC分类号： H02H7/12 ,  H03K17/082

CPC分类号： H02H7/1213 ,  G06F1/26 ,  G06F11/16 ,  G06F11/2015 ,  H03K17/0822 ,  H04M19/08

摘要： Aspects of the subject technology relate to a system and method for preventing voltage sagging using an Oring-FET in a redundant power supply configuration. Each redundant power supply includes an Oring-FET and a voltage comparator. The voltage comparator receives and compares an input voltage and an output voltage of the Oring-FET during power up. In the event input voltage is less than the output voltage, the Oring-FET is deemed to be operating properly and provides output to a communicatively coupled system bus in response to the input voltage reaching a predetermined voltage threshold level. In the event the input voltage is approximately equal to the output voltage, the voltage comparator assists in preventing inrush current from flowing from the communicatively coupled system bus and prevents voltage sagging on the communicatively coupled system bus when another redundant power supply configuration is providing power to the communicatively coupled system bus.

公开(公告)号：US20170163027A1

公开(公告)日：2017-06-08

申请号：US15439725

申请日：2017-02-22

申请人： CISCO TECHNOLOGY, INC.

发明人： Weizhong Tang ,  Sung Kee Baek ,  Craig Zimmerman

IPC分类号： H02H7/12 ,  H03K17/082

CPC分类号： H02H7/1213 ,  G06F1/26 ,  G06F11/16 ,  G06F11/2015 ,  H03K17/0822 ,  H04M19/08

摘要： Aspects of the subject technology relate to a system and method for preventing voltage sagging using an Oring-FET in a redundant power supply configuration. Each redundant power supply includes an Oring-FET and a voltage comparator. The voltage comparator receives and compares an input voltage and an output voltage of the Oring-FET during power up. In the event input voltage is less than the output voltage, the Oring-FET is deemed to be operating properly and provides output to a communicatively coupled system bus in response to the input voltage reaching a predetermined voltage threshold level. In the event the input voltage is approximately equal to the output voltage, the voltage comparator assists in preventing inrush current from flowing from the communicatively coupled system bus and prevents voltage sagging on the communicatively coupled system bus when another redundant power supply configuration is providing power to the communicatively coupled system bus.

公开(公告)号：US20150270700A1

公开(公告)日：2015-09-24

申请号：US14220905

申请日：2014-03-20

申请人： Cisco Technology, Inc.

发明人： Weizhong Tang ,  Sung Kee Baek ,  Craig Zimmerman

IPC分类号： H02H7/12

CPC分类号： H02H7/1213 ,  G06F1/26 ,  G06F11/16 ,  G06F11/2015 ,  H03K17/0822 ,  H04M19/08

摘要： A system and method for preventing bus voltage sagging when an Oring-FET in an N+1 redundant power supply configuration is faulty during power up. Each redundant power supply includes an Oring-FET and a voltage comparator. The voltage comparator receives and compares an input voltage and an output voltage of the Oring-FET during power up. In the event input voltage is less than the output voltage, the Oring-FET is deemed to be operating properly and provides output to a communicatively coupled system bus in response to the input voltage reaching a predetermined voltage threshold level. In the event the input voltage is approximately equal to the output voltage, the voltage comparator assists in preventing inrush current from flowing from the communicatively coupled system bus and prevents voltage sagging on the communicatively coupled system bus when another redundant power supply configuration is providing power to the communicatively coupled system bus.

摘要翻译： 当在N + 1冗余电源配置中的Oring-FET在上电期间发生故障时，用于防止总线电压下垂的系统和方法。 每个冗余电源包括Oring-FET和电压比较器。 电压比较器在上电期间接收和比较Oring-FET的输入电压和输出电压。 在输入电压小于输出电压的情况下，Oring-FET被认为正常工作，并且响应于输入电压达到预定的电压阈值电平，向通信耦合的系统总线提供输出。 在输入电压近似等于输出电压的情况下，电压比较器有助于防止浪涌电流从通信耦合的系统总线流出，并且当另一冗余电源配置提供电力时防止在通信耦合的系统总线上的电压下垂 通信耦合系统总线。