公开(公告)号：US20220155807A1

公开(公告)日：2022-05-19

申请号：US17665907

申请日：2022-02-07

Applicant: Samsung Electronics Co., Ltd.

Inventor： Minshik SEOK ,  Younghoon LEE ,  Kyungrae KIM ,  Kyungsoo LEE ,  Junho HUH

IPC: G05F1/56 ,  G06F1/26

Abstract: Multiple power management integrated circuits (PMICs) may perform communication and power sequence operation coordination between the multiple PMICs through a communication interface connected to two signal lines using a dual pin interface. The multiple PMICs include a main PMIC configured to communicate with at least one application processor through a system interface and at least one sub-PMIC configured to communicate with the main PMIC through the communication interface. A first signal line uses a single bidirectional signaling scheme, and a power status signal PSTATUS is exchanged between the main PMIC and the at least one sub-PMIC through the first signal line. A second signal line uses a single unidirectional signaling scheme, and a power sequence control signal PIF is transmitted from the main PMIC to the at least one sub-PMIC through the second signal line.

公开(公告)号：US20250021119A1

公开(公告)日：2025-01-16

申请号：US18523424

申请日：2023-11-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Hyunseok NAM ,  Minshik SEOK ,  Daehan YU

IPC: G05F1/56

Abstract: A power management device includes a main power management integrated circuit (PMIC) and at least one sub PMIC that communicates with the main PMIC through a dedicated pin. The main PMIC includes a first pin, enables first functions associated with a first initial operation based on a battery voltage during a stand-by period before generating first output voltages based on the battery voltage and applies a first sub enable signal to the at least one sub PMIC through the first pin based on a power-on signal after completing the first initial operation. The at least one sub PMIC includes a second pin, receives the first sub enable signal through the second pin and enables second functions associated with a second initial operation based on the battery voltage, in response to an activation of the first sub enable signal.

公开(公告)号：US20210271276A1

公开(公告)日：2021-09-02

申请号：US17027946

申请日：2020-09-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Minshik SEOK ,  Younghoon LEE ,  Kyungrae KIM ,  Kyungsoo LEE ,  Junho HUH

IPC: G05F1/56

Abstract: Multiple power management integrated circuits (PMICs) may perform communication and power sequence operation coordination between the multiple PMICs through a communication interface connected to two signal lines using a dual pin interface. The multiple PMICs include a main PMIC configured to communicate with at least one application processor through a system interface and at least one sub-PMIC configured to communicate with the main PMIC through the communication interface. A first signal line uses a single bidirectional signaling scheme, and a power status signal PSTATUS is exchanged between the main PMIC and the at least one sub-PMIC through the first signal line. A second signal line uses a single unidirectional signaling scheme, and a power sequence control signal PIF is transmitted from the main PMIC to the at least one sub-PMIC through the second signal line.