Texas Instruments Corporation

Michael T Direnzo

Manish Goel

David Patrick Magee

Indumini W Ranmuthu

Michael Oliver Polley

Srinivas Lingam

Mark W Heaton

Assaf Sella

Michael K Masten

Wasim Khan

A voltage regulator control circuit includes a transistor input controller. The transistor input controller forces a slew control signal on its slew control output to a state responsive to a change in a load condition and forces an ON signal to a state on its first transistor control output. A first transistor has a first control input and first and second current terminals. A second transistor couples to the first transistor. A driver has a slew control input, a driver input, and a driver output. The driver input couples to the first transistor control output. The driver output couples to the first control input. Responsive to a first logic state of the slew control signal and a first state of the ON signal, the driver provides a higher current to the first control input, and responsive to a second state of the slew control signal and a first state of the ON signal, the driver provides a lower current to the first control input.

Reverse recovery protection in a switching voltage converter

An electronic circuit () includes a signal processing circuit () including first and second signal processing blocks () coupled in cascade, a memory circuit () coupled to and adjustable between the first and second signal processing blocks (), the memory circuit () having memory spaces, the memory circuit () configurable to establish a trade-off of the memory spaces between the first and second signal processing blocks (), and a configuring circuit () operable to configure the trade-off of the memory spaces of the memory circuit ().

Flexible and efficient memory utilization for high bandwidth receivers, integrated circuits, systems, methods and processes of manufacture

A preamble frequency switching design technique for frequency switching the training symbols within the preamble associated with a MIMO communication system ensures that data throughput is optimized.

Frequency switched preamble design to minimize channel estimation time in MIMO communications systems

A method for commutation of a switched reluctance motor (SRM) is disclosed that requires no rotor position sensor or detailed prior knowledge of the motor's magnetic characteristics. The apparatus and method employs a calibration routine to learn the flux-current characteristics of each SRM phase in its aligned position. From these characteristics, the flux-current characteristics at other appropriate switching angles are approximated. Commutation is accomplished by estimating the flux in an active phase and comparing the estimate to the flux approximated for the switching angle. The apparatus and method is particularly well suited for relatively heavy duty loading applications, such as a fan.

Commutation method and apparatus for switched reluctance motor

A hard disk drive system (,) includes a rotating magnetic disk (,), an arm (,) moved by a voice coil motor (,), and a read/write head (,) movably supported on the arm by a microactuator (,). The read/write head is moved approximately radially of the disk in response to operation of the microactuator or movement of the arm. The microactuator has a nonlinear transfer function. A control system (,) for controlling the microactuator and the voice coil motor includes a control technique (,) having a nonlinear transfer function which is substantially an inverse of the nonlinear transfer function of the microactuator. Control of the microactuator is effected through the control technique, the control technique linearizing the control of the microactuator.

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Coppell, TX, United States of America

Michael T Direnzo