公开(公告)号：EP2680419B1

公开(公告)日：2016-01-06

申请号：EP13275075.3

申请日：2013-03-22

申请人： Linear Technology Corporation

发明人： Li, Jian ,  Zhang, Jindong Henry

IPC分类号： H02M3/156

CPC分类号： H02M3/156

公开(公告)号：EP2920872A2

公开(公告)日：2015-09-23

申请号：EP13776655.6

申请日：2013-09-27

申请人： Linear Technology Corporation

发明人： Manlove, Gregory ,  Gu, Yi Ding ,  Li, Jian

IPC分类号： H02M3/156 ,  G05F1/10

CPC分类号： G05F1/10 ,  G05F1/562 ,  H02M1/32 ,  H02M3/142 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/0019 ,  H02M2001/0025

摘要： A switching regulator circuit incorporates an offset circuit, connected in a control loop of the regulator circuit, that, in response to a signal indicating an imminent load current step, adjusts a duty cycle of a power switch for the current step prior to the regulator circuit responding to a change in output voltage due to the current step. In one embodiment, a load controller issues a digital signal shortly before a load current step. The digital signal is decoded and converted to an analog offset signal in a feedback control loop of the regulator to immediately adjust a duty cycle of the switch irrespective of the output voltage level. By proper timing of the offset, output voltage ripple is greatly reduced. The current offset may also be used to rapidly change the output voltage in response to an external signal requesting a voltage step.

公开(公告)号：EP2897270A1

公开(公告)日：2015-07-22

申请号：EP15000109.7

申请日：2015-01-16

申请人： Linear Technology Corporation

发明人： Zhang, Jindong ,  Li, Jian

IPC分类号： H02M3/07 ,  H02M1/32 ,  H02M1/36

CPC分类号： H02M1/32 ,  H02M1/36 ,  H02M3/07 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1582 ,  H02M3/1588

摘要： To reduce in-rush currents into a switched capacitor DC/DC converter and detect voltage and current faults, a converter controller is housed along with a current limit series transistor and fault detection circuitry. The series transistor is controlled to limit the in-rush current to a predetermined maximum level during start-up. If the duration of the current limit level, or the time for Vout to achieve a target voltage, exceeds a first threshold time, a first fault detector in the package shuts off the series transistor. During steady state operation, if the input current reaches the limit for a second threshold time or if Vout extends outside a certain range for the second threshold time, a second fault detector in the package shuts off the series transistor.

摘要翻译： 为了减少冲击电流进入开关电容器DC / DC转换器并检测电压和电流故障，转换器控制器与电流限制串联晶体管和故障检测电路一起存放。 控制串联晶体管以在启动期间将浪涌电流限制到预定的最大电平。 如果电流限制电平的持续时间或Vout达到目标电压的时间超过第一阈值时间，则封装中的第一故障检测器关闭串联晶体管。 在稳态操作期间，如果输入电流达到第二阈值时间的限制，或者如果Vout在第二阈值时间内超出一定范围，则封装中的第二故障检测器关闭串联晶体管。

公开(公告)号：EP2897270B1

公开(公告)日：2018-07-04

申请号：EP15000109.7

申请日：2015-01-16

申请人： Linear Technology Corporation

发明人： Zhang, Jindong ,  Li, Jian

IPC分类号： H02M3/07 ,  H02M1/32 ,  H02M1/36

CPC分类号： H02M1/32 ,  H02M1/36 ,  H02M3/07 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1582 ,  H02M3/1588

摘要： To reduce in-rush currents into a switched capacitor DC/DC converter and detect voltage and current faults, a converter controller is housed along with a current limit series transistor and fault detection circuitry. The series transistor is controlled to limit the in-rush current to a predetermined maximum level during start-up. If the duration of the current limit level, or the time for Vout to achieve a target voltage, exceeds a first threshold time, a first fault detector in the package shuts off the series transistor. During steady state operation, if the input current reaches the limit for a second threshold time or if Vout extends outside a certain range for the second threshold time, a second fault detector in the package shuts off the series transistor.

公开(公告)号：EP2680419A2

公开(公告)日：2014-01-01

申请号：EP13275075.3

申请日：2013-03-22

申请人： Linear Technology Corporation

发明人： Li, Jian ,  Zhang, Jindong Henry

IPC分类号： H02M3/156

CPC分类号： H02M3/156

摘要： In a method for automatically compensating a voltage regulator an error amplifier (20) and compensation network are initially disconnected from a feedback loop, a DC bias voltage (34) is applied to the feedback loop to cause the regulator's output voltage to be at 90% of its nominal value and an AC perturbation signal (42) is then added to the DC bias voltage to cause the output voltage to have a ripple at a frequency of the AC signal. The gain of the feedback loop and the phase difference between the AC signal and the ripple is then measured. The measured values are then used to automatically adjust operating characteristics of the error amplifier and the compensation network such that, when these components are connected back in the feedback loop during normal operation, the feedback loop has the desired gain and phase margin at the frequency of the AC signal, such as the loop's unity gain frequency.

摘要翻译： 在用于自动补偿电压调节器的方法中，误差放大器（20）和补偿网络最初从反馈回路断开，将DC偏置电压（34）施加到反馈回路以使调节器的输出电压为90％ 然后将AC扰动信号（42）加到DC偏置电压上，以使输出电压在AC信号的频率处具有纹波。 然后测量反馈回路的增益以及交流信号和纹波之间的相位差。 然后使用测量值来自动调节误差放大器和补偿网络的工作特性，使得在正常工作期间这些组件在反馈回路中连接回去时，反馈回路具有所期望的增益和相位裕度，其频率为 交流信号，如环路的单位增益频率。

公开(公告)号：EP2920872B1

公开(公告)日：2018-09-12

申请号：EP13776655.6

申请日：2013-09-27

申请人： Linear Technology Corporation

发明人： Manlove, Gregory ,  Gu, Yi Ding ,  Li, Jian

IPC分类号： H02M1/32 ,  H02M3/142 ,  H02M3/158

CPC分类号： G05F1/10 ,  G05F1/562 ,  H02M1/32 ,  H02M3/142 ,  H02M3/156 ,  H02M3/158 ,  H02M2001/0019 ,  H02M2001/0025

摘要： A switching regulator circuit incorporates an offset circuit, connected in a control loop of the regulator circuit, that, in response to a signal indicating an imminent load current step, adjusts a duty cycle of a power switch for the current step prior to the regulator circuit responding to a change in output voltage due to the current step. In one embodiment, a load controller issues a digital signal shortly before a load current step. The digital signal is decoded and converted to an analog offset signal in a feedback control loop of the regulator to immediately adjust a duty cycle of the switch irrespective of the output voltage level. By proper timing of the offset, output voltage ripple is greatly reduced. The current offset may also be used to rapidly change the output voltage in response to an external signal requesting a voltage step.

公开(公告)号：EP2680419A3

公开(公告)日：2015-03-11

申请号：EP13275075.3

申请日：2013-03-22

申请人： Linear Technology Corporation

发明人： Li, Jian ,  Zhang, Jindong Henry

IPC分类号： H02M3/156

CPC分类号： H02M3/156

摘要： In a method for automatically compensating a voltage regulator an error amplifier (20) and compensation network are initially disconnected from a feedback loop, a DC bias voltage (34) is applied to the feedback loop to cause the regulator's output voltage to be at 90% of its nominal value and an AC perturbation signal (42) is then added to the DC bias voltage to cause the output voltage to have a ripple at a frequency of the AC signal. The gain of the feedback loop and the phase difference between the AC signal and the ripple is then measured. The measured values are then used to automatically adjust operating characteristics of the error amplifier and the compensation network such that, when these components are connected back in the feedback loop during normal operation, the feedback loop has the desired gain and phase margin at the frequency of the AC signal, such as the loop's unity gain frequency.