Qualcomm Incorporated

Vinayakumar Prakash Mallapur

Anand Devendra Kudari

Shruti Hanumanthaiah

Prashanth Pai

An apparatus comprises a first printed circuit board (PCB) supporting a master subsystem including a master power management integrated circuit (PMIC) coupled to a master processor via a first local interface. The apparatus also comprises a second PCB supporting a slave subsystem including a slave PMIC coupled to a slave processor via a second local interface. The apparatus further comprises a first bi-directional control interface coupling the master processor to the master PMIC and to the slave PMIC. The first bi-directional control interface comprises at least one trace overloaded to carry multiple PMIC functions.

Interface for integrating physically distant printed circuit boards (PCBs) in a wearable device

Methods, devices, apparatuses, and systems may provide integrated combined current sensing for parallel charging architecture. In one embodiment a charger includes a first charging device that includes a switching circuit having a switching output configured to be coupled to a first terminal of an inductive element. The first charging device further includes a charging terminal configured to couple a second terminal of the inductive element to a battery terminal to provide a first power source to charge a battery coupled to the battery terminal. The first charging device further includes a charge current sense element coupled between the charging terminal and the second terminal of the inductive element. The charge current sense element is configured to sense a charge current at the charging terminal. The circuit further includes a second charging device that includes a second power source coupled to the second terminal such that the charge current comprises current from the first charging device and the second charging device.

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Belgaum, India

Vinayakumar Prakash Mallapur