公开(公告)号：US20240429732A1

公开(公告)日：2024-12-26

申请号：US18617856

申请日：2024-03-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Kelvin Le ,  Riccardo Ruffo ,  David Stout ,  FNU Nitish

IPC: H02J7/04 ,  B60L53/60

Abstract: A battery charger includes a relay having a first terminal and a second terminal. A capacitor has a first terminal and a second terminal. The first terminal is coupled to the second terminal of the relay. A clamp circuit is coupled to the second terminal of the capacitor. A reference voltage circuit has an output terminal. A comparator has a first comparator input terminal coupled to the second terminal of the capacitor and has a second comparator input terminal coupled to the output terminal of the reference voltage circuit.

公开(公告)号：US20240128901A1

公开(公告)日：2024-04-18

申请号：US17965519

申请日：2022-10-13

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Miroslav Oljaca ,  David Stout ,  Dennis P. Lehman ,  Jan Morten Braathen ,  Merril Newman

IPC: H02P6/10 ,  H02P6/182

CPC classification number: H02P6/10 ,  H02P6/182 ,  H02P21/18

Abstract: Methods, circuits and computer program products are presented herein. The method includes isolating a ripple waveform from a current signal originating from a brushed direct current motor (BDCM). The method includes determining the wave count of the ripple waveform. The method includes determining a position of a movable structure operably coupled to a shaft of the BDCM according to the wave count of the ripple waveform. The present technology may be practiced without discrete capacitor components in high pass filtering aspects of the disclosed circuit. The methods, circuits and computer program products can be implemented to accurately determine a rotational position of a shaft of a BDCM and also position(s) of mechanism(s) coupled to the shaft without requiring any external sensors or other components for this purpose other than the disclosed circuits.