公开(公告)号：US20240322590A1

公开(公告)日：2024-09-26

申请号：US18188672

申请日：2023-03-23

Applicant: Renesas Electronics America Inc.

Inventor： Shahriar Jalal NIBIR ,  Sungkeun LIM ,  Yen-Mo Chen ,  Chong HAN ,  Heonyoung KIM

IPC: H02J7/02

CPC classification number: H02J7/02 ,  H02J2207/20 ,  H02J2207/30 ,  H02M1/4225 ,  H02M1/4291

Abstract: A method may include receiving power from a power adapter having a power adapter current limit, providing power from the power adapter to a load having a load current at a first load current level that is less than or equal to the power adapter current limit; generating a first periodic current through an inductor in a forward direction; detecting the load having the load current at a second load current level that may be greater than the adapter power current limit; decreasing the forward current level of the first periodic current; and generating a second periodic current through the inductor in a reverse direction to provide power from the battery module to the load. The second periodic current may be initiated in the reverse direction when the first periodic current in the forward direction reaches the zero current level.

公开(公告)号：US20250105646A1

公开(公告)日：2025-03-27

申请号：US18473606

申请日：2023-09-25

Applicant: Renesas Electronics America Inc.

Inventor： Sungkeun LIM ,  Yen-Mo CHEN ,  Chong HAN ,  Dongwoo HAN

IPC: H02J7/00

Abstract: Systems and methods for operating a battery charger are described. A controller can operate a battery charger under a charging mode to use an adapter power to support a system power of the battery charger. The controller can detect the adapter power reaches a maximum, transition the battery charger into a discharging mode to decrease a battery charging current in the battery charger to support the system power and decrease a system voltage at the output of the battery charger. The controller can detect the system voltage is less than a battery voltage of the battery by an offset and transition the battery charger from the discharging mode to a pass-through mode that continues to discharge the battery, where the PTM can cause the battery charger to discharge the battery without performing switching.