公开(公告)号：US20210143833A1

公开(公告)日：2021-05-13

申请号：US17156909

申请日：2021-01-25

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mustapha EL MARKHI ,  Erhan OZALEVLI ,  Tuli DAKE ,  Rohit BHAN

IPC: H03M1/66 ,  H02J7/00

Abstract: An example device comprises a digital-to-analog converter (DAC) comprising first and second transistors coupled to a first amplifier, the second transistor coupled to a first output of the DAC and to an output of the first amplifier, and third and fourth transistors coupled to the first amplifier and to a second output of the DAC, the third and fourth transistors switchably coupled to a voltage supply and to the first transistor. The device also comprises a first node coupled to the first output of the DAC and to a resistor. The device further includes a second node coupled to the second output of the DAC, and a second amplifier coupled to the second node and to the first transistor and switchably coupled to the third and fourth transistors. The device also comprises a comparator coupled to the first node.

公开(公告)号：US20200007145A1

公开(公告)日：2020-01-02

申请号：US16191225

申请日：2018-11-14

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Mustapha EL MARKHI ,  Erhan OZALEVLI ,  Tuli DAKE ,  Rohit BHAN

IPC: H03M1/66 ,  H02J7/00

Abstract: An example device comprises a digital-to-analog converter (DAC) comprising first and second transistors coupled to a first amplifier, the second transistor coupled to a first output of the DAC and to an output of the first amplifier, and third and fourth transistors coupled to the first amplifier and to a second output of the DAC, the third and fourth transistors switchably coupled to a voltage supply and to the first transistor. The device also comprises a first node coupled to the first output of the DAC and to a resistor. The device further includes a second node coupled to the second output of the DAC, and a second amplifier coupled to the second node and to the first transistor and switchably coupled to the third and fourth transistors. The device also comprises a comparator coupled to the first node.

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

IPC: H02J50/12 ,  H02J7/02

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.