Cypress Semiconductor Corporation

Avago Technologies International Sales Pte. Limited

Rishi Agarwal

Nicholas Alexander Bodnaruk

Pavan Kumar Kuchipudi

Suresh Naidu Lekkala

John S Walley

Pradeep Kumar Bajpai

Jay Edward Ackerman

Marc Keppler

John Lynn McNitt

Michael Braiman

Arun Palaniappan

Sanjeev Dwarakanath

Jitendra Ramkrishna Kulkarni

A system may include an adapter, a charger, and a connector. The adapter is configured to receive an alternating current (AC) signal and generate an adapter signal, the adapter signal being generated based on an up-conversion of the AC signal. The charger is configured to generate a direct current (DC) signal from the adapter signal using one or more energy storage elements and supply the DC signal to a load, in which the adapter signal has a voltage greater than that of the DC signal. The connector is configured to couple the adapter and the charger. In some aspects, the adapter signal is adjusted based on one or more measurements of the DC signal at an output of the charger to maintain a target power for charging the load.

Battery charging architectures

Techniques for low-power USB Type-C receivers with high noise rejection are described herein. In an example embodiment, a USB-enabled device comprises a receiver circuit coupled to a Configuration Channel (CC) line of a USB Type-C subsystem. The receiver circuit is configured to reject the incoming signal even when the incoming signal includes noise with a magnitude of more than 300 mVpp, and to operate in the presence of a VBUS charging current that is compliant with a USB-PD specification.

Low-power type-C receiver with high idle noise and DC-level rejection

A Universal Serial Bus (USB) Type-C connector subsystem is described herein. An integrated circuit (IC) chip device includes a Universal Serial Bus (USB) Type-C subsystem. The USB Type-C subsystem is to operate an Ra termination circuit that consumes no more than a first predetermined amount of current after the Ra termination circuit is applied to a Vconn line of the Type-C subsystem, or to operate a standby reference circuit in a low power mode of the device to perform detection on a Configuration Channel (CC) line of the Type-C subsystem, where the device consumes no more than a second predetermined amount of current in the low power mode.

Type-C connector subsystem

Techniques for low-power USB Type-C receivers with high DC-level shift tolerance are described herein. In an example embodiment, a USB-enabled device comprises a receiver circuit coupled to a Configuration Channel (CC) line of a USB Type-C subsystem. The receiver circuit is configured to receive data from an incoming signal on the CC line even when the incoming signal has more than 250 mV of DC offset with respect to local ground, and to operate in presence of a VBUS charging current that is specified in a USB-PD specification.

Low-power Type-C receiver with high idle noise and DC-level rejection

Techniques are described herein for detecting one of multiple (e.g., at least three) charger types that may be connected to a portable device. In response to detecting a charging device (e.g., a charger) of a particular charger type, the portable device is configured to charge its battery by drawing the maximum voltage and/or current that is/are allowed by the particular charger type. In an example embodiment, a portable device detects a Universal Serial Bus (USB) connection to a charging device and determines whether the charging device conforms to a first, second, or third charger type based on voltages on data lines of the USB connection. The portable device then charges its battery at maximum charging power available from the charging device according to the third charger type.

Automatic scheme to detect multi-standard charger types

Techniques for low-power USB Type-C receivers with high DC-level shift tolerance and high noise rejection are described herein. In an example embodiment, a USB-enabled device comprises a receiver circuit coupled to a Configuration Channel (CC) line of a USB Type-C subsystem. The receiver circuit is configured to receive data from an incoming signal on the CC line even when the incoming signal has more than 250 mV of DC offset with respect to local ground, and to reject the incoming signal even when the incoming signal includes noise with a magnitude of more than 300 mVpp.

Techniques for controlling the charging of portable devices are described herein. In an example embodiment, an apparatus comprises a controller coupled to a Universal Serial Bus (USB) port that is configured as a dedicated charging port (DCP). The controller is configured to detect whether a battery-charging (BC) compliant device or a BC non-compliant device is attached to the USB port. When a BC compliant device is detected, the controller controls the charging of the BC compliant device (e.g., by providing a maximum of 1.5 A of charging current). When a BC non-compliant device is detected, the controller controls the charging of the BC non-compliant device by providing a higher (e.g., up to 2.4 A) charging current.

Multi-standard compliant USB battery charging scheme with detection of host disconnection in ACA-DOCK mode

Techniques for low-power implementation of a Universal Serial Bus (USB) Type-C connector subsystem are described herein. In an example embodiment, an integrated circuit (IC) chip device comprises a Universal Serial Bus (USB) Type-C subsystem. The Type-C subsystem is configured to operate an Ra termination circuit that consumes no more than 100 &#x3bc;A of current after the Ra termination circuit is applied to a Vconn line of the Type-C subsystem, and/or to operate one or more standby reference circuits in a deep-sleep state of the device to perform detection on a Configuration Channel (CC) line of the Type-C subsystem, where the device consumes no more than 100 &#x3bc;A of current in the deep-sleep state.

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Santa Clara, CA, United States of America

Rishi Agarwal