公开(公告)号：US20200099294A1

公开(公告)日：2020-03-26

申请号：US16428525

申请日：2019-05-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Gary Franklin CHARD ,  Ariel Dario MOCTEZUMA ,  Hasibur RAHMAN ,  Alex Kwasi Nyavor TITRIKU ,  Srinath HOSUR

IPC: H02M3/158 ,  H02M3/157

Abstract: A system includes an inductor and a first switch coupled between a first end of the inductor and a voltage supply node. The system also includes a second switch coupled between the first end of the inductor and a negative output supply node. The system also includes a third switch coupled between a second end of the inductor and a positive output supply node. The system also includes a fourth switch coupled between the second end of the inductor and a ground node. The system also includes a controller coupled to the first, second, third, and fourth switches. The controller is configured to provide an inductor charge mode, a positive boost mode, a negative boost mode, a first rest state involving the first switch, and a second rest state involving the fourth switch.

公开(公告)号：US20200382131A1

公开(公告)日：2020-12-03

申请号：US16730612

申请日：2019-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Keliu SHU ,  Gary Franklin CHARD ,  William Robert KRENIK

IPC: H03M1/66 ,  G06F1/03 ,  H03M1/06

Abstract: A circuit includes a phase-locked loop having a phase-locked loop output to provide a first phase signal and a second phase signal phase delayed with respect to the first phase signal. The circuit further includes a digital circuit having a digital circuit input and an output. The digital circuit input couples to the phase-locked loop output. On the digital circuit output, the digital circuit is configured to provide a first digital-to-analog converter (DAC) enable signal and a second DAC enable signal. The circuit also includes first and second DACs. The first DAC is coupled to the digital circuit. The first DAC has a first enable input coupled to the digital circuit output to receive the first DAC enable signal. The second DAC is coupled to the digital circuit. The second DAC has a second enable input coupled to the digital circuit output to receive the second DAC enable signal.