Patents by Inventor Alexandru Hatular

Alexandru Hatular has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • High-side current-sensing smart battery charger
    Patent number: 6184660
    Abstract: A battery charger IC for controlling operation of a buck converter circuit that includes a series switch and a resistor for sensing battery charging current. The battery charger IC includes a pulse-width-modulation switch drive circuit that, during charging of the battery, supplies to the buck converter circuit with an electrical signal which repeatedly turns-on and then turns-off the series switch. The battery charger IC also includes a charging-current sense amplifier which receives from the current-sensing resistor and amplifies an electrical signal which represents the battery charging electrical current. The charging-current sense amplifier includes a bridge circuit to which is coupled the electrical signal received by the charging-current sense amplifier from the current-sensing resistor and an auto-zero circuit.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: February 6, 2001
    Assignee: Micro International, Ltd.
    Inventor: Alexandru Hatular