-
公开(公告)号：US20230134098A1
公开(公告)日：2023-05-04
申请号：US17969272
申请日：2022-10-19
发明人： Wangmiao Hu , Lijie Jiang , Fangyu Zhang
摘要： A control circuit for a DC-DC converter has an over-current comparison circuit, an adaptive voltage position (AVP) control circuit and a switching control circuit. The over-current comparison circuit provides an over-current comparison signal by comparing an output current with a current limit value. The AVP control circuit provides a position signal based on a voltage identification code, an output voltage, an output current and the over-current comparison signal. The switching control circuit controls the DC-DC converter based on the position signal. When the output current is smaller than the current limit value, the output voltage varies along a first voltage position curve, and otherwise, the output voltage varies along a second voltage position curve.
-
公开(公告)号：US10996732B2
公开(公告)日：2021-05-04
申请号：US16361151
申请日：2019-03-21
发明人： Suhua Luo , Lijie Jiang
摘要： A power supply has a reference regulation circuit and a voltage regulator. The reference regulation circuit receives a VID code and a slew rate command from a processor and regulates a reference voltage based on the VID code and the slew rate command. The voltage regulator converts an input voltage to an output voltage based on the reference voltage. The circuit has a Σ-Δ modulation unit to generate a count duration signal based on a target count signal, wherein the target count signal is generated by dividing a voltage regulation step by the slew rate command, both the target count signal and the count duration signal are digital signals, the target count signal represents a real number having an integer part and a decimal part, the count duration signal represents an integer number, the circuit further regulates the reference voltage based on the count duration signal and the VID code.
-
公开(公告)号：US20190207518A1
公开(公告)日：2019-07-04
申请号：US16228131
申请日：2018-12-20
发明人： Xiaokang Wu , Lijie Jiang , Binci Xu
IPC分类号： H02M3/158 , H02M1/08 , G01R29/027 , G01R29/033
CPC分类号： H02M3/1584 , G01R29/0273 , G01R29/033 , H02M1/08 , H02M2001/0009 , H02M2003/1566 , H02M2003/1586
摘要： A control method of multi-phase converters, wherein the multi-phase converter includes a plurality of switching circuits coupled in parallel between an input voltage and a load. The control method includes: comparing a feedback signal with a reference signal to generate a comparison signal, wherein the feedback signal is indicative of an output voltage provided to the load; determining the number of switching circuits for power operation based on the load current; detecting a period of the comparison signal; comparing the detected period of the comparison signal with a time threshold to determine whether a transient rise of load current has occurred; and getting all the switching circuits into power operation if a transient rise of load current is detected.
-
公开(公告)号：US20180173286A1
公开(公告)日：2018-06-21
申请号：US15842797
申请日：2017-12-14
发明人： Reagan Luo , Qian Ouyang , Lijie Jiang , Marvin Ma , Xiaokang Wu
摘要： An autonomous power system has a voltage regulator which converts an input voltage to an output voltage according to a reference voltage. A control method for the power system: receiving a voltage identification code sent by a processor; providing an autonomous voltage identification code when the voltage identification sent by the processor keeps constant during a first preset duration, wherein the autonomous voltage identification code can be updated self-adaptively; providing a reference voltage according to a sum of the voltage identification code and the autonomous identification code; and adjusting the output voltage according to the reference voltage.
-
公开(公告)号：US20170141680A1
公开(公告)日：2017-05-18
申请号：US15344429
申请日：2016-11-04
发明人： Qian Ouyang , Xiaokang Wu , Lijie Jiang
CPC分类号： H02M3/156 , H02M2003/1566
摘要： The present invention discloses a DC-DC converter with constant on time control. The DC-DC converter includes a transient unit to obtain the transient information of a current flowing through a power switching circuit, to slow down the variation of the output voltage, so as to eliminate the overshot issue.
-
公开(公告)号：US09356510B2
公开(公告)日：2016-05-31
申请号：US14310293
申请日：2014-06-20
发明人： Lijie Jiang , Xiaokang Wu , Qian Ouyang
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching converter providing an output voltage has at least one switch and a control circuit. The control circuit has a slope compensation module, an output correction module and a control module, wherein the slope compensation module provides a slope compensation signal, the output correction module provides a voltage trim signal based on the slope compensation signal, and the control module provides a control signal to control the at least one switch based on the slope compensation signal, the voltage trim signal, a reference signal, the output voltage and an error compensation signal provided based on a difference between the output voltage and a set target of the output voltage.
摘要翻译： 提供输出电压的开关转换器具有至少一个开关和控制电路。 控制电路具有斜率补偿模块，输出校正模块和控制模块，斜坡补偿模块提供斜率补偿信号，输出校正模块基于斜率补偿信号提供电压调整信号，控制模块提供 基于斜率补偿信号，电压调整信号，参考信号，输出电压和基于输出电压与输出的设定目标之间的差异提供的误差补偿信号来控制至少一个开关的控制信号 电压。
-
公开(公告)号：US20140375286A1
公开(公告)日：2014-12-25
申请号：US14310293
申请日：2014-06-20
发明人： Lijie Jiang , Xiaokang Wu , Qian Ouyang
IPC分类号： H02M3/158
CPC分类号： H02M3/156 , H02M2001/0025
摘要： A switching converter providing an output voltage has at least one switch and a control circuit. The control circuit has a slope compensation module, an output correction module and a control module, wherein the slope compensation module provides a slope compensation signal, the output correction module provides a voltage trim signal based on the slope compensation signal, and the control module provides a control signal to control the at least one switch based on the slope compensation signal, the voltage trim signal, a reference signal, the output voltage and an error compensation signal provided based on a difference between the output voltage and a set target of the output voltage.
摘要翻译： 提供输出电压的开关转换器具有至少一个开关和控制电路。 控制电路具有斜率补偿模块，输出校正模块和控制模块，斜坡补偿模块提供斜率补偿信号，输出校正模块基于斜率补偿信号提供电压调整信号，控制模块提供 基于斜率补偿信号，电压调整信号，参考信号，输出电压和基于输出电压与输出的设定目标之间的差异提供的误差补偿信号来控制至少一个开关的控制信号 电压。
-
8.发明授权Multi-phase switching converter with overlap mode and control method thereof 有权具有重叠模式的多相开关变换器及其控制方法公开(公告)号：US08896278B2
公开(公告)日：2014-11-25
申请号：US13720710
申请日：2012-12-19
发明人： Qian Ouyang , Lijie Jiang , Xiaokang Wu , Bo Zhang , Suhua Luo
CPC分类号： G05F1/10 , H02M3/1584 , H02M2003/1566 , H02M2003/1586
摘要： A multi-phase switching converter and control method thereof. The multi-phase switching converter includes a plurality of switching circuits and a controller. The output terminals of the plurality of switching circuits are coupled together to provide an output voltage to a load. The controller is configured to generate a plurality of control signals to turn on the plurality of switching circuits successively. When a load current increase is detected, the controller operates in an overlap mode and at least two switching circuits subsequent to the current switching circuit are turned on simultaneously. After the overlap mode, the controller resumes to the interleave mode and turns on the plurality of switching circuits successively from the switching circuit subsequent to the at least two switching circuits.
摘要翻译： 一种多相开关变换器及其控制方法。 多相开关变换器包括多个开关电路和控制器。 多个开关电路的输出端子耦合在一起以向负载提供输出电压。 控制器被配置为产生多个控制信号，以连续地接通多个开关电路。 当检测到负载电流增加时，控制器以重叠模式操作，并且当前开关电路之后的至少两个开关电路同时导通。 在重叠模式之后，控制器恢复到交错模式，并且在至少两个开关电路之后从开关电路连续地接通多个开关电路。
-
9.发明公开公开(公告)号：US20230318452A1
公开(公告)日：2023-10-05
申请号：US18325365
申请日：2023-05-30
发明人： Wangmiao Hu , Lijie Jiang , Chiahsin Chang , Jinghai Zhou
CPC分类号： H02M3/156 , H02M1/0009
摘要： A control circuit for a switching converter has a valley current limiting circuit, a peak current limiting circuit, an ON time control circuit, and a switching control circuit. The valley current limiting circuit provides a valley current comparison signal by comparing a current sense signal with a first current threshold. The current sense signal is representative of a current flowing through a switching circuit of the switching converter. The peak current limiting circuit provides a peak current comparison signal based on the valley current comparison signal, a switching control signal, and a second current threshold. The ON time control circuit provides an ON time control signal based on the switching control signal. The switching control circuit provides the switching control signal based on the voltage comparison signal, the valley current comparison signal, the peak current comparison signal, and the ON time control signal to control the switching circuit.
-
公开(公告)号：US11750100B2
公开(公告)日：2023-09-05
申请号：US17555757
申请日：2021-12-20
发明人： Lijie Jiang , Binci Xu , Chao Liu
CPC分类号： H02M3/1584 , H02M1/0025 , H02M1/32
摘要： A controller for a multiphase switching converter has a set generation circuit, a frequency divider, and a plurality of sub control circuits. The set generation circuit provides a set signal based on an output voltage and a total current flowing through the plurality of switching circuits. The frequency divider provides a plurality of frequency division signals based on the set signal. The plurality of sub control circuits provides a plurality of switching control signals to control the plurality of switching circuits respectively. Such that when the total current is larger than a current reference, one of the plurality of switching circuits maintains off temporarily, until the total current is less than the current reference, then the one of the plurality of switching circuits are turned on based on the output voltage and a voltage reference.
-
-
-
-
-
-
-
-
-
搜索结果
62 条记录 (耗时 0.023 秒)
