Intel Corporation

Qualcomm Incorporated

Arvindh Rajasekaran

Arvind S

Raghavendra Ramesh Rao

Jagadish Vasudeva Singh

Radhika Patil

Anand Devendra Kudari

Anup J Deka

Tarakesava Reddy K

Neha Bhargava

Rohit Parakkal

Srikanth Jatavallabhula

A power architecture that uses an efficient intermediate power conversion stage between AC adaptor (and battery charger) and subsequent voltage regulators (VRs) (e.g., core VR) for processors for higher overall efficiency allowing for higher performance in a given thermal envelope and iso-system input power. Power losses from both the charger and the core VR are reduced by splitting the power as power to sustained high-power rails, and power to the rest of the platform power rails that have low residency in high-power states. The sustained high-power rails are placed under an intermediate power conversion topology which is directly powered by the adaptor. The rest of the rails along with charging of the battery are powered by the battery charger.

Power delivery architecture for high power portable devices

A fast load current sensing apparatus and scheme provides instantaneous detection of peak current excursions using low silicon area and power efficient techniques. The response time for detecting signal excursions and measuring a signal (e.g., load current) is independent of resolution or precision and can be applied to high resolution telemetry. The apparatus sends out maximum current limit (FHC_limit) code at any instant the load current is detected to be more than a digital-to-analog converter (DAC) code. If the load current is less than the FHC_limit the scheme restores to a next DAC code as per a counter's next value. In case load current is more than FHC_limit, the scheme updates the DAC code to FHC_limit code and starts the counter from the FHC_limit.

Fast response load current sensing apparatus and method

A method, an apparatus, and a computer-readable medium for battery charging are provided. The apparatus determines a level of a charge current for charging a battery based on a user preference. The apparatus determines a number of rest periods in the charge current, wherein during the rest periods, the apparatus is configured to perform at least one of setting the charge current to zero or discharging the battery. The apparatus charges the battery with the determined level of the charge current and the determined number of rest periods.

Charge rate optimization for enhanced battery cycle life

Power supplies combining a switching-mode power supply in parallel with a current source can improve maximum load current capability. The current source can be turned on, or the amount of current supplied by the current source increased, when there is a heavy load current demand, for example, when the load current demand is more than the current rating of the switching-mode power supply. The duty cycle of the output stage of the switching-mode power supply can be used to determine the load current demand. The current source may increase the maximum output current of the power supply beyond the maximum output current of the switching-mode power supply. For example, the current source may add 0.5 A to the current capability of a 2.5 A switching-mode power supply.

Switching-mode power supply with helper current source

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Bengaluru, India

Arvindh Rajasekaran