Chaoyang Semiconductor Jiangyin Technology Co., Ltd.

Endura IP Holdings Ltd.

Chaoyang Semiconductor Jiangyian Technology Co., Ltd.

Arnaud Toni

Mykhaylo Teplechuk

Bertrand Diotte

Gol Nagdebe

Davide Cartasegna

An analog front-end (AFE) for an impedance sensor uses digitally controlled impedances to modulate a differential input from an impedance-based sensor. The digitally controlled impedances may be coupled between the differential input and one or more reference voltages. In some embodiments use of the digitally controlled impedances may allow for omission of a preamplifier from the AFE, or a reduction in gain of the preamplifier, reducing noise associated with the preamplifier.

Impedance controlled AFE

A buck converter uses flying capacitors and cross coupling. The flying capacitors reduce the voltage stress across the inductors and the devices, and may provide high efficiency at very low duty cycle ratios. In addition to the high efficiency performance, the converters may provide a significant reduction in area, since smaller inductors can be used compared to typical buck converters. An example of realization shows up to 90% efficiency at 0.5V output and 10 A load from a 3.6V input with small flying capacitors, compared to what is typically used in a switched capacitor converter.

Capacitor cross coupled 2-phase buck converter

Present invention is an apparatus and method for power conversion charge pumps that uses cross-coupling capacitors. High efficiency power converter charge pump for both divide by 3 (&#x2153;), divide by 3/2 (&#x2154;) are explicitly discussed. The power conversion charge pumps utilizing cross coupled capacitors may provide up to 40% reduction in a number of switches required for a charge pump implementation, thus reducing design area cost while also resulting in high-efficiency performance.

Apparatus and method for charge pump power conversion

A voltage regulator utilizes a non-invasive sensing capacitor in differentially sensing a current indicative of current of an output capacitor of the voltage regulator. Some embodiments utilize current mirrors and an inverter for determining if the current indicative of current of the output capacitor is above or below a particular magnitude. Some embodiments utilize information indicative of output capacitor current in determining duty cycle for a switching voltage regulator, and some embodiments utilize the information in activating transient control circuitry.

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San Diego, CA, United States of America

Arnaud Toni