公开(公告)号：US20210305893A1

公开(公告)日：2021-09-30

申请号：US17138660

申请日：2020-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ashish Kumar ,  Haoquan Zhang ,  Yogesh Kumar Ramadass

IPC: H02M3/07 ,  H02J50/05 ,  H03M1/12 ,  G01D11/00

Abstract: Capacitively isolated current-loaded or current-driven charge pump circuits and related methods transfer electrical energy from a primary side to a secondary side over a capacitive isolation boundary, using a controlled current source to charge isolation capacitors with constant current, as opposed to current impulses, while maintaining output voltage within tolerance. The charge pump circuits provide DC-to-DC converters that can be used in isolated power supplies, particularly in low-power applications and in such devices as sensor transmitters that have separate electrical ground planes. The devices and methods transfer electrical energy over an isolated capacitive barrier in a manner that is efficient, inexpensive, and reduces electromagnetic interference (EMI).

公开(公告)号：US11463000B2

公开(公告)日：2022-10-04

申请号：US17138660

申请日：2020-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ashish Kumar ,  Haoquan Zhang ,  Yogesh Kumar Ramadass

IPC: H02M3/07 ,  G01D11/00 ,  H03M1/12 ,  H02J50/05

Abstract: Capacitively isolated current-loaded or current-driven charge pump circuits and related methods transfer electrical energy from a primary side to a secondary side over a capacitive isolation boundary, using a controlled current source to charge isolation capacitors with constant current, as opposed to current impulses, while maintaining output voltage within tolerance. The charge pump circuits provide DC-to-DC converters that can be used in isolated power supplies, particularly in low-power applications and in such devices as sensor transmitters that have separate electrical ground planes. The devices and methods transfer electrical energy over an isolated capacitive barrier in a manner that is efficient, inexpensive, and reduces electromagnetic interference (EMI).

公开(公告)号：US20240079958A1

公开(公告)日：2024-03-07

申请号：US18506337

申请日：2023-11-10

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ashish Kumar ,  Haoquan Zhang ,  Yogesh Kumar Ramadass

IPC: H02M3/07 ,  G01D11/00 ,  H02J50/05 ,  H03M1/12

CPC classification number: H02M3/07 ,  G01D11/00 ,  H02J50/05 ,  H03M1/12

Abstract: In one example, an apparatus comprises: a primary side bridge coupled between a power input and a first ground terminal, the primary side bridge having first switching terminals coupled to first capacitor terminals; and a secondary side bridge coupled between a power output and a second ground terminal, the secondary side bridge having second switching terminals coupled to second capacitor terminals.

公开(公告)号：US11817779B2

公开(公告)日：2023-11-14

申请号：US17958989

申请日：2022-10-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ashish Kumar ,  Haoquan Zhang ,  Yogesh Kumar Ramadass

IPC: H02M3/07 ,  G01D11/00 ,  H03M1/12 ,  H02J50/05

CPC classification number: H02M3/07 ,  G01D11/00 ,  H02J50/05 ,  H03M1/12

Abstract: Capacitively isolated current-loaded or current-driven charge pump circuits and related methods transfer electrical energy from a primary side to a secondary side over a capacitive isolation boundary, using a controlled current source to charge isolation capacitors with constant current, as opposed to current impulses, while maintaining output voltage within tolerance. The charge pump circuits provide DC-to-DC converters that can be used in isolated power supplies, particularly in low-power applications and in such devices as sensor transmitters that have separate electrical ground planes. The devices and methods transfer electrical energy over an isolated capacitive barrier in a manner that is efficient, inexpensive, and reduces electromagnetic interference (EMI).

公开(公告)号：US20230028100A1

公开(公告)日：2023-01-26

申请号：US17958989

申请日：2022-10-03

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Ashish Kumar ,  Haoquan Zhang ,  Yogesh Kumar Ramadass

IPC: H02M3/07 ,  G01D11/00 ,  H03M1/12 ,  H02J50/05

Abstract: Capacitively isolated current-loaded or current-driven charge pump circuits and related methods transfer electrical energy from a primary side to a secondary side over a capacitive isolation boundary, using a controlled current source to charge isolation capacitors with constant current, as opposed to current impulses, while maintaining output voltage within tolerance. The charge pump circuits provide DC-to-DC converters that can be used in isolated power supplies, particularly in low-power applications and in such devices as sensor transmitters that have separate electrical ground planes. The devices and methods transfer electrical energy over an isolated capacitive barrier in a manner that is efficient, inexpensive, and reduces electromagnetic interference (EMI).