Cypress Semiconductor Corporation

Silego Technology Inc.

Albert Chen

Kuang-Yu Chen

I-Teh Sha

Tom Truong

John Othniel McDonald

Jay Li

Minghan Chuang

Improved techniques for sensing and reporting power consumption from a single or multiple power supplies are disclosed. The disclosed techniques comprise integrated circuit solutions for sensing power. In some embodiments, an integrated circuit comprises circuitry for converting source voltage into a pulse-width modulation (PWM) signal and circuitry for modulating the PWM signal with a current sense signal to determine sensed power.

Power sensing

A single integrated circuit that supports both power switching and data switching is disclosed. In some embodiments, the integrated circuit comprises a driver circuit configured to drive a switch of an associated line in a power mode or in a data mode and one or more decoupling capacitor ground switches, wherein each decoupling capacitor ground switch connects an associated decoupling capacitor to ground in the power mode and wherein each decoupling capacitor ground switch leaves an associated decoupling capacitor floating in the data mode.

Power and data switch

Improved techniques for sensing and reporting consumed power are disclosed. The disclosed techniques comprise an integrated circuit solution for sensing power. In some embodiments, such an integrated circuit comprises a resistor on which a sense voltage sensed across an external resistor in response to a load current is mirrored and an analog-to-digital converter configured to regulate the voltage across the resistor and output a binary value representing power. The binary value representing power may integrate one or more electrical or environmental parameters such as current, voltage, temperature, battery voltage, etc.

An apparatus comprising a circuit configured to generate a spread spectrum clock signal. The circuit may comprise a voltage controlled oscillator with a gain that may be automatically controlled.

Adaptive spread spectrum

A circuit and method for controlling a spread spectrum transition are presented comprising a first circuit and a second circuit. The first circuit may be configured to generate a clock signal in response to (i) a reference signal, (ii) a sequence of spread spectrum ROM codes, and (iii) a command signal. The second circuit may be configured to synchronize the command signal to a feedback signal. The sequence of spread spectrum ROM codes may be generated according to a predetermined mathematical formula and optimized in accordance with predetermined criteria.

Circuit and method for controlling a spread spectrum transition

A spread spectrum clock generator comprising a spread spectrum modulation circuit and a control circuit. The spread spectrum modulation circuit may be configured to generate a clock signal in response to (i) a sequence of linearity ROM codes, (ii) a sequence of spread spectrum ROM codes, and (iii) a command signal. The control circuit may be configured to synchronize the command signal to a feedback signal. The sequence of linearity ROM codes and the sequence of spread spectrum ROM codes may be generated by predetermined mathematical formulas and optimized in accordance with predetermined criteria.

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Saratoga, CA, United States of America

Albert Chen