-
公开(公告)号：US10447152B2
公开(公告)日：2019-10-15
申请号：US15465504
申请日：2017-03-21
发明人： Xu Zhang , Jian Li , San Hwa Chee
摘要： A method and system of driving a switched capacitor converter having a plurality of switches. A first driver coupled to a first switch is powered by providing a first reference voltage level VCC to a first supply and a GND reference to a second supply node of the first driver. A second driver coupled to a second switch is powered by providing a unidirectional path between the first supply node of a first driver and the first supply node of the second driver and by keeping OFF the second switch while turning ON the first switch. A third driver coupled to a third switch is powered by providing a unidirectional path between the first supply node of a second driver and the first supply node of the third driver and by keeping OFF the first and third switch while turning ON the second switch.
-
公开(公告)号：US20180019669A1
公开(公告)日：2018-01-18
申请号：US15465487
申请日：2017-03-21
发明人： Xu Zhang , Jian Li , San Hwa Chee
IPC分类号： H02M3/07
摘要： Methods and systems of pre-balancing a switched capacitor converter are provided. A first comparator includes a positive input configured to receive a voltage across an output capacitor and a negative input configured to receive a first hysteresis voltage. A second comparator includes a positive input configured to receive a voltage across an input capacitor of the switched capacitor converter and a negative input configured to receive a second hysteresis voltage. A first current source is coupled between the output capacitor and GND and is configured to discharge the output capacitor upon determining that the voltage across the output capacitor is above a tolerance provided by the first hysteresis voltage. A second current source is coupled between the input capacitor and GND and is configured to discharge the input capacitor upon determining that the voltage across the input capacitor is above a tolerance provided by the second hysteresis voltage.
-
公开(公告)号：US09998000B2
公开(公告)日：2018-06-12
申请号：US15465339
申请日：2017-03-21
发明人： Xu Zhang , Jian Li , San Hwa Chee
CPC分类号： H02M3/07 , H02M1/08 , H02M1/36 , H02M3/073 , H02M2003/072
摘要： Methods and systems of controlling a switched capacitor converter are provided. Upon determining that a voltage across a flying capacitor is above a first threshold, a first current is drawn from a first terminal of the flying capacitor by a first current source, and a second current is provided to a second terminal of the flying capacitor by a second current source. Upon determining that the voltage across the flying capacitor is below a second threshold, the first current is provided to the first terminal of the flying capacitor by the first current source, and the second current is drawn from the second terminal of the flying capacitor by the second current source. Upon determining that the voltage across the flying capacitor is above the second threshold and below the first threshold from the reference voltage, the first and second current sources are turned OFF.
-
公开(公告)号：US10468978B2
公开(公告)日：2019-11-05
申请号：US15465487
申请日：2017-03-21
发明人： Xu Zhang , Jian Li , San Hwa Chee
摘要： Methods and systems of pre-balancing a switched capacitor converter are provided. A first comparator includes a positive input configured to receive a voltage across an output capacitor and a negative input configured to receive a first hysteresis voltage. A second comparator includes a positive input configured to receive a voltage across an input capacitor of the switched capacitor converter and a negative input configured to receive a second hysteresis voltage. A first current source is coupled between the output capacitor and GND and is configured to discharge the output capacitor upon determining that the voltage across the output capacitor is above a tolerance provided by the first hysteresis voltage. A second current source is coupled between the input capacitor and GND and is configured to discharge the input capacitor upon determining that the voltage across the input capacitor is above a tolerance provided by the second hysteresis voltage.
-
公开(公告)号：US20180019666A1
公开(公告)日：2018-01-18
申请号：US15465504
申请日：2017-03-21
发明人： Xu Zhang , Jian Li , San Hwa Chee
CPC分类号： H02M3/07 , H02M1/08 , H02M1/36 , H02M3/073 , H02M2003/072
摘要： A method and system of driving a switched capacitor converter having a plurality of switches. A first driver coupled to a first switch is powered by providing a first reference voltage level VCC to a first supply and a GND reference to a second supply node of the first driver. A second driver coupled to a second switch is powered by providing a unidirectional path between the first supply node of a first driver and the first supply node of the second driver and by keeping OFF the second switch while turning ON the first switch. A third driver coupled to a third switch is powered by providing a unidirectional path between the first supply node of a second driver and the first supply node of the third driver and by keeping OFF the first and third switch while turning ON the second switch.
-
公开(公告)号：US20180019665A1
公开(公告)日：2018-01-18
申请号：US15465339
申请日：2017-03-21
发明人： Xu Zhang , Jian Li , San Hwa Chee
IPC分类号： H02M3/07
CPC分类号： H02M3/07 , H02M1/08 , H02M1/36 , H02M3/073 , H02M2003/072
摘要： Methods and systems of controlling a switched capacitor converter are provided. Upon determining that a voltage across a flying capacitor is above a first threshold, a first current is drawn from a first terminal of the flying capacitor by a first current source, and a second current is provided to a second terminal of the flying capacitor by a second current source. Upon determining that the voltage across the flying capacitor is below a second threshold, the first current is provided to the first terminal of the flying capacitor by the first current source, and the second current is drawn from the second terminal of the flying capacitor by the second current source. Upon determining that the voltage across the flying capacitor is above the second threshold and below the first threshold from the reference voltage, the first and second current sources are turned OFF.
-
-
-
-
-
搜索结果
6 条记录 (耗时 0.012 秒)
