Qualcomm Incorporated

Lion Semiconductor Inc.

Aaron Melgar

Christian Gregory Sporck

Shadi Hawawini

Thomas J O'Brien

Wonyoung Kim

Hans Meyvaert

Steve Hawley

VaraPrasad Arikatla

Seema Kumar

Alberto Alessandro Angelo Puggelli

Thomas Li

Chunping Song

John Crossley

Zhipeng Li

Hector Ivan Oporta

Neal L Horovitz

David Wong

Rashed Hoque

Daryl Bergstrom

Varaprasad Arikatla

Thomas O'brien

Thomas O'BRIEN

Systems for charging a battery are provided, the systems comprising: a regulator having an output coupled to the battery and having an input; a wireless charging receiver having an output coupled to the input of the regulator and having an input that receives a power signal from a wireless charging transmitter; a controller having a first input coupled to the input of the regulator, having a second input coupled to the output of the regulator, and having a first output coupled to the wireless charging transmitter, wherein the controller is configured to send, using the first output of the controller, a control signal to the wireless charging transmitter that causes the wireless charging transmitter to change the power signal provided to the wireless charging receiver.

Systems for battery charging using a wireless charging signal

The present disclosure includes a method of charging a battery. In one embodiment, the method comprises receiving, in a battery charging circuit on an electronic device, an input voltage having a first voltage value from an external power source. The battery charger is configured to produce a charge current having a first current value into the battery. The input current limit and/or duty cycle of the charger is monitored. Control signals may be generated to increase the first voltage value of the input voltage if either (i) the input current limit is activated or (ii) the duty cycle reaches a maximum duty cycle. The charger also receives signals indicating a temperature inside the electronic device and generates control signals to decrease the value of the input voltage when the temperature increases above a threshold temperature.

Systems and methods for charging a battery

Voltage regulator systems include, in part, a regulator comprising an input terminal and an output terminal, wherein the regulator is configured to receive an input voltage from an adapter at the input terminal and provide an output voltage at the output terminal, wherein the regulator comprises at least one switched capacitor regulator operating in a first conversion mode corresponding to a first conversion factor. The voltage regulator systems also include a controller configured to control an operation of the regulator, wherein the controller is configured to determine when a conversion ratio of the regulator is greater than the first conversion factor, and, in response, to send a request to the adapter to decrease the input voltage.

Voltage regulator systems configured to control input voltage

A configurable charge converter may include an adaptive low-dropout regulator. The adaptive low-dropout regulator may include a headroom detection circuit and a power supply controller. The headroom detection circuit may monitor a voltage drop across a field effect transistor (FET) and cause a programmable power supply to increase or decrease an output voltage accordingly. In some aspects, the configurable charge converter may include an adaptive low-dropout regulator and a buck/boost converter. The output power of the configurable charge controller may be provided by the adaptive low-dropout regulator, the buck/boost converter, or by both the adaptive low-dropout regulator and the buck/boost converter operating in combination.

Configurable charge controller

Growing community of inventors

San Martin, CA, United States of America

Aaron Melgar