Broadcom Corporation

Arm Limited

Narayan Prasad Ramachandran

Rainer Herberholz

Mark David Rutherford

Walid Nabhane

Peter Andrew Rees Williams

David Chang

Chenmin Zhang

Ajmal A Godil

Yi Ting Chen

Danny Joseph Traynor

Various implementations described herein are related to a device having a first coil-shaped spiral structure for an active shield and a second coil-shaped spiral structure that is wound in-between windings of the first coil-shaped spiral structure. The first coil-shaped spiral structure may provide for a coil-based electro-magnetic (EM) shield as a counter-measure circuit for protecting an underlying circuit.

Active shield structure

Aspects of charger detection and optimization prior to host control are described herein. In various embodiments, a condition of whether reverse current is present on a system bus is detected. When the condition for reverse current is present, reverse current is sunk by one or more of various reverse current sink circuits. By relying upon one or more of the reverse current sink circuits, for safety, to address or mitigate the condition for reverse current, a detector may be able to identify or distinguish among several different types of charger or charging ports coupled to a system bus allowing a charger to be selected optimally. Further, an indicator of the type of charger or charging port coupled to the system bus is communicated over a single pin interface, for backwards compatibility with circuits capable of identifying between only two different types of chargers.

Charger detection and optimization prior to host control

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Bengaluru, India

Narayan Prasad Ramachandran