Texas Instruments Corporation

National Semiconductor Corporation

Marc Edric Davis-Marsh

Tawen Mei

Lajos Burgyan

Hakan Oner

Alan Dean Martin

Abdallah Obidat

An apparatus includes a regulator, a modulation circuit, a first delay generator, and a second delay generator. The regulator generates a regulator control output signal to control a current of a power converter to regulate an output voltage of the power converter, the modulation circuit modulates a switching frequency of the power converter, the first delay generator controls a first delay time to turn on a switch of the power converter in a switching cycle, based on a change in the switching frequency of the power converter, and the second delay generator controls a second delay time to turn the switch of the power converter off in the switching cycle, based on the first delay time and a duty cycle of the power converter.

Spread spectrum modulation of rising and falling edge delays for current mode switching converters

An example of an apparatus includes a bias circuit having first and second bias circuit outputs. The apparatus also includes a comparator having first and second comparator inputs. The apparatus also includes a first capacitor coupled between the second comparator input and the second bias circuit output. The apparatus also includes a first switch coupled between the second comparator input and the second bias circuit output. The apparatus also includes a second switch coupled between the first bias circuit output and an input terminal, a third switch coupled between the input terminal and the first comparator input, and a fourth switch coupled between the first bias circuit output and the first comparator input. The apparatus also includes a second capacitor coupled between the first comparator input and the second bias circuit output.

Mathematical function circuit

A discrete field coupled capacitor with a cross-connected capacitor-pair, such as for use as a discrete bypass capacitor. The FCC includes a first port with first and second terminals, and a second port with third and fourth terminals. A first capacitor structure is connected between the first and second terminals, and a second capacitor structure connected between the third and fourth terminals. A cross-connect structure includes a first cross-connection to connect the first terminal to the third terminal, and a second cross-connection to connect the second terminal to the fourth terminal, to cross-connect the first and second capacitor structures. The capacitor structures have respective parasitic ESL, and can be disposed in proximity to effect a pre-defined ESL field coupling with reverse phasing to reduce parasitic ESL. The FCC can be constructed as a PCB or monolithic device. In a PCB four-layer construction, the cross-connections can be formed on respective mid-layers.

Discrete capacitor structure

A power converter circuit includes a power stage circuit configured to convert an input voltage to provide an output voltage. A feedback control circuit is configured to generate an error signal based on the output voltage and a reference voltage. An offset circuit is configured to apply an offset signal to the error signal based on change in a modulating frequency of a clock signal to provide an adjusted error signal. A driver circuit is configured to drive the power stage circuit based on the adjusted error signal and the clock signal.

Power conversion with modulated switching

In one aspect, the present invention relates generally to integrated circuit (IC) packages and more specific to some embodiments of IC power convertor technologies. In particular, IC packages that have a high degree of scalability to handle high voltage or current levels, good heat dissipation properties, flexible adaptability to generate packages operable at a wide range of current levels and having a wide range of power adaptability, lends itself to rapid inexpensive prototyping, the ability to adapt various substrates and IC devices to one another without extensive retooling or custom designing of components, as well as other advantages.

Growing community of inventors

San Jose, CA, United States of America

Marc Edric Davis-Marsh