公开(公告)号：US11695320B2

公开(公告)日：2023-07-04

申请号：US17214527

申请日：2021-03-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Zhangyi Xie ,  Neil Gibson ,  Stefan Herzer

IPC: H02M3/158 ,  H02M1/00 ,  H02M1/08

CPC classification number: H02M1/0087 ,  H02M1/0025 ,  H02M1/08 ,  H02M3/158 ,  H02M1/0003 ,  H02M1/0083

Abstract: In some examples, a circuit includes a resistor network, a filter, a current generator, and a capacitor. The resistor network has a resistor network output and is adapted to be coupled between a switch terminal of a power converter (104) and a ground terminal. The filter has a filter input and a filter output, the filter input coupled to the resistor network output. The current generator has a current generator output and first and second current generator inputs, the first current generator input configured to receive an input voltage and the second current generator input coupled to the filter output. The capacitor is coupled between the current generator output and the ground terminal.

公开(公告)号：US11356020B2

公开(公告)日：2022-06-07

申请号：US16546869

申请日：2019-08-21

Applicant: Texas Instruments Incorporated

Inventor： Zhangyi Xie ,  Zhenglin Pu ,  Yu Wang

IPC: H02M3/158 ,  H02M1/00

Abstract: A circuit comprising a frequency to voltage converter having an input configured to receive a signal and an output coupled to a first node and another frequency to voltage converter having an input configured to receive a reference clock and an output coupled to a second node. The circuit also comprises a voltage source coupled between the first node and a third node, a voltage source coupled between the second node and a fourth node, a switch coupled between the first node and the third node, and a switch coupled between the second and fourth nodes. The circuit further comprises a comparator having an input coupled to the second node, another input coupled to the third node, and an output, a logic circuit having an input coupled to the comparator output and an output, and a counter having an input coupled to the logic circuit output and an output.

公开(公告)号：US20220158537A1

公开(公告)日：2022-05-19

申请号：US17214527

申请日：2021-03-26

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Zhangyi Xie ,  Neil Gibson ,  Stefan Herzer

IPC: H02M1/00 ,  H02M3/158 ,  H02M1/08

Abstract: In some examples, a circuit includes a resistor network, a filter, a current generator, and a capacitor. The resistor network has a resistor network output and is adapted to be coupled between a switch terminal of a power converter (104) and a ground terminal. The filter has a filter input and a filter output, the filter input coupled to the resistor network output. The current generator has a current generator output and first and second current generator inputs, the first current generator input configured to receive an input voltage and the second current generator input coupled to the filter output. The capacitor is coupled between the current generator output and the ground terminal.

公开(公告)号：US10432092B2

公开(公告)日：2019-10-01

申请号：US16032718

申请日：2018-07-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Zhangyi Xie ,  Zhenglin Pu ,  Yu Wang

IPC: H02M3/158 ,  H02M1/00

Abstract: A controller is configured to perform self-calibration to maintain approximately a desired switching frequency of a power converter. The self-calibration performed by the controller at least partially mitigates detrimental effects associated with variation in an actual switching frequency of the power converter from a designed switching frequency. The controller maintains approximately the desired switching frequency, in one example, in view of a delay inherent in the control by the controller of the power converter.