Stmicroelectronics Gmbh

Dialog Semiconductor (uk) Limited

Vineet Tiwari

Baris Posat

Amit D Bavisi

Alin I Gherghescu

Ershad Ahmed

Narendra Nath Gaddam

A method and a circuit of operating a multi-phase switching converter is presented. The circuit contains a plurality of phase circuits. The method includes setting an adaptive voltage positioning parameter of an adaptive voltage positioning controller and controlling an output voltage of the multi-phase switching converter using the adaptive voltage positioning controller. The method further includes generating a threshold voltage value based on the adaptive voltage positioning parameter, comparing the output voltage of the multi-phase switching converter with the threshold voltage value and performing at least one of enabling and disabling a phase circuit based on the comparison.

Multi-phase switching converter

An H-bridge driver for a disk drive system includes first and second high side switched legs and first and second low side switched legs. An inductor head for writing data to and reading data from a magnetic media is connected to form a center of the H-bridge. The system includes a voltage regulator circuit that generates a common mode regulated voltage. First and second high side logic circuits, which selectively control operation of the first and second high side switched legs, are coupled between a high reference voltage and the common mode regulated voltage. First and second low side logic circuits, which control the first and second low side switched legs, are coupled between the common mode regulated voltage and ground.

Disk drive write driver and associated control logic circuitry

Growing community of inventors

San Jose, CA, United States of America

Vineet Tiwari