-
公开(公告)号：US11581797B2
公开(公告)日：2023-02-14
申请号：US17680245
申请日：2022-02-24
发明人： Wei-Hsu Chang , Shih-Jen Yang , Yi-Wei Lee , Ta-Yung Yang
摘要： A multiple output universal serial bus travel adaptor includes: at least one AC-DC converter for converting an AC power to a first DC power; at least one DC-DC converter for providing a second DC power according to the first DC power; plural switches which are coupled to the AC-DC converter and/or the DC-DC converter to provide the first DC power or the second DC power to corresponding connectors according to operation signals; and a protocol controller configured to generate the operation signals according to at least one of the following parameters: a) the types of the connectors; b) whether there is a mobile device connected with the connectors; c) a first command from the mobile device; d) the power consumed by the mobile devices; e) the currents flowing through the connectors; and f) the voltages at the connectors.
-
公开(公告)号：US11545908B2
公开(公告)日：2023-01-03
申请号：US17245043
申请日：2021-04-30
发明人： Wei-Hsu Chang , Kun-Yu Lin , Tzu-Chen Lin , Ta-Yung Yang
摘要： A flyback power converter circuit includes a transformer, a blocking switch, a primary side switch, a primary side controller circuit and a secondary side controller circuit. The transformer is coupled between an input voltage and an internal output voltage in an isolated manner. The blocking switch controls the electric connection between the internal output voltage and an external output voltage. In a standby mode, the internal output voltage is regulated to a standby voltage, and the blocking switch is controlled to be OFF; in an operation mode, the internal output voltage is regulated to an operating voltage, and the blocking switch is controlled to be ON, such that the external output voltage has the operating voltage. The standby voltage is smaller than the operating voltage, so that the power consumption of the flyback power converter circuit is reduced in the standby mode.
-
公开(公告)号：US20220271645A1
公开(公告)日：2022-08-25
申请号：US17680245
申请日：2022-02-24
发明人： Wei-Hsu Chang , Shih-Jen Yang , Yi-Wei Lee , Ta-Yung Yang
摘要： A multiple output universal serial bus travel adaptor includes: at least one AC-DC converter for converting an AC power to a first DC power; at least one DC-DC converter for providing a second DC power according to the first DC power; plural switches which are coupled to the AC-DC converter and/or the DC-DC converter to provide the first DC power or the second DC power to corresponding connectors according to operation signals; and a protocol controller configured to generate the operation signals according to at least one of the following parameters: a) the types of the connectors; b) whether there is a mobile device connected with the connectors; c) a first command from the mobile device; d) the power consumed by the mobile devices; e) the currents flowing through the connectors; and f) the voltages at the connectors.
-
公开(公告)号：US11329489B2
公开(公告)日：2022-05-10
申请号：US16666358
申请日：2019-10-28
发明人： Wei-Hsu Chang , Ta-Yung Yang
摘要： A rechargeable battery is coupled to a power delivery unit or an external load unit. In a charging mode, the power delivery unit converts an input power to a converted voltage and/or current. A charging circuit converts the converted voltage and/or current to a charging voltage and/or current for charging the rechargeable battery. Power data is communicated between the power delivery unit and the rechargeable battery by: 1) the power delivery unit adjusting the converted voltage, wherein the power data is expressed by plural voltage levels of the converted voltage; and/or 2) the rechargeable battery adjusting a battery input current, wherein the power data is expressed by plural current levels of the battery input current. At least one of the converted voltage, the converted current, the charging voltage, or the charging current is adjusted according to the power data.
-
公开(公告)号：US20210075227A1
公开(公告)日：2021-03-11
申请号：US16850893
申请日：2020-04-16
发明人： Wei-Hsu Chang
摘要： A battery module for use in a battery system is coupled with other battery modules in the battery system in daisy-chain configuration. And, the battery module communicates with other battery modules through the daisy chain according to a communication interface protocol which has a predetermined number of clock pulses. The battery module includes a battery unit and a battery control circuit. When the battery module operates in a bottom mode, the battery control circuit generates an upstream clock output signal which includes the predetermined number of clock pulses plus a number of inserted clock pulses, to compensate a clock difference caused by the propagation delay of the daisy chain, such that the battery module is able to synchronously receive a downstream data signal transmitted from the target module via the daisy chain as the battery module is transmitting an upstream clock output signal.
-
公开(公告)号：US10715028B2
公开(公告)日：2020-07-14
申请号：US16586916
申请日：2019-09-28
发明人： Tzu-Chen Lin , Kun-Yu Lin , Li-Di Lo , Wei-Hsu Chang
摘要： A ZVS (zero voltage switching) control circuit for controlling a flyback power converter includes: a primary side controller circuit for generating a switching signal, to control a primary side switch; and a secondary side controller circuit for generating a synchronous rectifier (SR) control signal for controlling a synchronous rectifier switch. The SR control signal includes an SR-control pulse and a ZVS pulse. The SR-control pulse controls the synchronous rectifier switch to perform secondary side synchronous rectification. The secondary side controller circuit determines a trigger timing point of the ZVS pulse according to a waveform characteristic of a ringing signal, to control the synchronous rectifier switch to be ON for a predetermined period, thereby achieving zero voltage switching of the primary side switch. The primary side or the secondary side controller circuit includes a jitter controller for performing jitter control on the ZVS pulse.
-
公开(公告)号：US10705497B2
公开(公告)日：2020-07-07
申请号：US15996516
申请日：2018-06-03
发明人： Wei-Hsu Chang , Jung-Won Kim
摘要： A power system capable of detecting a foreign object, includes a power supplier side, a power receiver side, and a cable. The power supplier side includes a power converter, a foreign object detection and control circuit, and a pull-up circuit. The power converter supplies a supply voltage to the power receiver side according to a power supply control signal. The foreign object detection and control circuit generates the power supply control signal for controlling the power converter, and generates a foreign object detection and control signal according to a voltage at a supplier transmission node of the power supplier side, for determining whether a foreign object exists in the power receiver side. The pull-up circuit adjusts a level of a supply current which is supplied from the supplier transmission node to the power receiver side.
-
公开(公告)号：US20200067322A1
公开(公告)日：2020-02-27
申请号：US16666358
申请日：2019-10-28
发明人： Wei-Hsu Chang , Ta-Yung Yang
摘要： A rechargeable battery is coupled to a power delivery unit or an external load unit. In a charging mode, the power delivery unit converts an input power to a converted voltage and/or current. A charging circuit converts the converted voltage and/or current to a charging voltage and/or current for charging the rechargeable battery. Power data is communicated between the power delivery unit and the rechargeable battery by: 1) the power delivery unit adjusting the converted voltage, wherein the power data is expressed by plural voltage levels of the converted voltage; and/or 2) the rechargeable battery adjusting a battery input current, wherein the power data is expressed by plural current levels of the battery input current. At least one of the converted voltage, the converted current, the charging voltage, or the charging current is adjusted according to the power data.
-
公开(公告)号：US20180373216A1
公开(公告)日：2018-12-27
申请号：US15996516
申请日：2018-06-03
发明人： Wei-Hsu Chang , Jung-Won Kim
IPC分类号： G05B19/042 , G01V3/02 , G01R31/08
摘要： A power system capable of detecting a foreign object, includes a power supplier side, a power receiver side, and a cable. The power supplier side includes a power converter, a foreign object detection and control circuit, and a pull-up circuit. The power converter supplies a supply voltage to the power receiver side according to a power supply control signal. The foreign object detection and control circuit generates the power supply control signal for controlling the power converter, and generates a foreign object detection and control signal according to a voltage at a supplier transmission node of the power supplier side, for determining whether a foreign object exists in the power receiver side. The pull-up circuit adjusts a level of a supply current which is supplied from the supplier transmission node to the power receiver side.
-
公开(公告)号：US11843321B2
公开(公告)日：2023-12-12
申请号：US17534538
申请日：2021-11-24
发明人： Ta-Yung Yang , Wei-Hsu Chang , Yu-Chang Chen , Tsung-Wei Huang , Shui-Mu Lin
CPC分类号： H02M3/33592 , H02M1/08
摘要： A control circuit for controlling a power supply circuit to provide power to a system device which includes a communication circuit includes: a pulse width modulation (PWM) controller configured to switch a transformer of the power supply circuit to generate a first output voltage; and a switched capacitor converter configured to generate a second output voltage according to the first output voltage. The second output voltage provides power to the communication circuit, wherein the communication circuit generates a power saving signal to control the PWM controller and the switched capacitor converter. When the power saving signal is enabled, the first output voltage is decreased and a duty ratio of the switched capacitor converter is increased.
-
-
-
-
-
-
-
-
-
搜索结果
60 条记录 (耗时 0.022 秒)
