-
公开(公告)号：US20180090993A1
公开(公告)日：2018-03-29
申请号：US15279094
申请日：2016-09-28
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Mustapha El MARKHI , Erhan OZALEVLI , Tuli DAKE , Dingkun DU , Gianpaolo LISI , Jingwei XU
CPC classification number: H02M3/33592 , H02J50/12 , H02M1/081 , Y02B70/1433 , Y02B70/1475
Abstract: A wireless power transfer system using a resonant rectifier circuit with capacitor sensing. A wireless power transfer system includes a power receiver resonant circuit and a synchronous rectifier. The power receiver resonant circuit includes an inductor and a capacitor connected in series with the inductor. The synchronous rectifier is configured to identify zero crossings of alternating current flowing through the inductor based on voltage across the capacitor, and control synchronous rectification of the alternating current based on timing of the zero crossings.
-
公开(公告)号：US20180181151A1
公开(公告)日：2018-06-28
申请号：US15588089
申请日：2017-05-05
Applicant: Texas Instruments Incorporated
Inventor： Alvin XU , Qingjie MA , Yang WANG , Yan HE , Jun MA , Zhenghao CUI , Jingwei XU
IPC: G05F1/56
Abstract: Methods, apparatus, systems and articles of manufacture for negative output voltage active clamping using a floating bandgap reference and temperature compensation are disclosed. An example load switch includes a floating bandgap reference circuit to generate a bandgap reference voltage. A resistor divider is to generate a resistor divider voltage. A temperature compensator to apply a temperature compensation current to the resistor divider to create a temperature compensated resistor divider voltage. A power transistor is to be enabled when the temperature compensated resistor divider voltage is less than the bandgap reference voltage. The example load switch can work under negative output voltage clamping and get better accuracy drain to source clamped voltage of power transistor for inductive load condition.
-
Search Results
2
records
(took 0.017 seconds)
