公开(公告)号：US10569777B2

公开(公告)日：2020-02-25

申请号：US15429218

申请日：2017-02-10

Applicant: GM Global Technology Operations LLC

Inventor： S. M. Nayeem Hasan ,  Timothy Philippart

IPC: B60W30/18 ,  F02N11/08 ,  H02J7/00 ,  F02M51/06

Abstract: A circuit for compensating for low battery voltage available to power a load includes a power source, an inductor electrically coupled to the power source, a first switch configured to control current flow from the power source to the inductor, and a first diode connecting a first supply rail to the inductor. The circuit also includes a second switch configured to electrically connect the anode of a second diode to the inductor, with the cathode of the second diode connected to a second supply rail. A controller is configured to cycle the first and second switches to achieve a desired voltage values at the first and second supply rails. The second supply rail is electrically connected to the load. The controller is configured to enable the second switch to switch to a closed state only when the voltage at the power source is below a first predetermined threshold voltage.

公开(公告)号：US20180229730A1

公开(公告)日：2018-08-16

申请号：US15429218

申请日：2017-02-10

Applicant: GM Global Technology Operations LLC

Inventor： S.M. Nayeem Hasan ,  Timothy Philippart

IPC: B60W30/18 ,  H02J7/00 ,  F02M51/06 ,  F02N11/08

Abstract: A circuit for compensating for low battery voltage available to power a load includes a power source, an inductor electrically coupled to the power source, a first switch configured to control current flow from the power source to the inductor, and a first diode connecting a first supply rail to the inductor. The circuit also includes a second switch configured to electrically connect the anode of a second diode to the inductor, with the cathode of the second diode connected to a second supply rail. A controller is configured to cycle the first and second switches to achieve a desired voltage values at the first and second supply rails. The second supply rail is electrically connected to the load. The controller is configured to enable the second switch to switch to a closed state only when the voltage at the power source is below a first predetermined threshold voltage.