公开(公告)号：US09484799B2

公开(公告)日：2016-11-01

申请号：US14592476

申请日：2015-01-08

Applicant: Linear Technology Corporation

Inventor： Jindong Zhang ,  Jian Li

IPC: H02M1/32 ,  H02M3/156 ,  H02M3/158 ,  H02M1/36 ,  H02M3/07

CPC classification number: H02M1/32 ,  H02M1/36 ,  H02M3/07 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1582 ,  H02M3/1588

Abstract: 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.

Abstract translation: 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安装。 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：US10050559B2

公开(公告)日：2018-08-14

申请号：US15199693

申请日：2016-06-30

Applicant: LINEAR TECHNOLOGY CORPORATION

Inventor： Jian Li ,  Jindong Zhang

IPC: H02M3/158 ,  H02M7/537 ,  H02M1/12 ,  H02M1/00 ,  H02M3/156

Abstract: A power interface device includes a main switching converter, an auxiliary switching converter, a feedback sense circuit, an error amplifier, a high pass filter, a transient detection circuit, and an auxiliary control circuit. The transient detection circuit is configured to receive the higher frequency component of the transient signal and output an enable signal when the higher frequency component of the transient signal falls outside of an operating window range defined by a first threshold and a second threshold and output a disable signal when the higher frequency component of the transient signal stays within the operating window range. The auxiliary control circuit configured to activate the auxiliary switching converter in accordance with the enable signal and to deactivate the auxiliary switching converter in accordance with the disable signal.

公开(公告)号：US10284099B2

公开(公告)日：2019-05-07

申请号：US15611003

申请日：2017-06-01

Applicant: LINEAR TECHNOLOGY CORPORATION

Inventor： Jindong Zhang ,  Jian Li

IPC: H02M3/335 ,  H02M1/08 ,  H02M3/07 ,  H02M3/337 ,  H02M1/00

Abstract: A hybrid power converter circuit includes a switched-capacitor power converter stage and a pulse-width modulation (PWM) or resonant output circuit coupled to a switching node of the switched-capacitor power converter stage. In particular, the PWM or resonant output circuit can include a transformer having a primary winding and a secondary winding magnetically coupled to each other, and the secondary winding is coupled to the output node of the power converter. The switched-capacitor power converter stage is coupled between the input node of the power converter and the primary winding of the transformer, and includes capacitors and switches configured to connect the capacitors to the input node during a first phase of operation and connect the capacitors to the primary winding of the transformer of the PWM or resonant output circuit during a second phase of operation.

公开(公告)号：US20150207401A1

公开(公告)日：2015-07-23

申请号：US14592476

申请日：2015-01-08

Applicant: Linear Technology Corporation

Inventor： Jindong Zhang ,  Jian Li

IPC: H02M1/32 ,  H02M3/158

CPC classification number: H02M1/32 ,  H02M1/36 ,  H02M3/07 ,  H02M3/156 ,  H02M3/158 ,  H02M3/1582 ,  H02M3/1588

Abstract: 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.

Abstract translation: 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安装。 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。