Patents by Inventor Axil Panwitz

Axil Panwitz 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).

  • Voltage buffer for large gate loads with rail-to-rail operation and preferable use in LDO's
    Patent number: 6614280
    Abstract: Described is a low-dropout (LDO) voltage buffer implemented in CMOS with nearly rail-to-ail in/output operation which is capable of driving a large MOS gate. The voltage buffer utilizes a single mismatched input transistor pair with systematic offset which is biased to 350 mV below Vdd to operate at a reduced threshold voltage by utilizing the backgate effect (body effect). A dynamic biasing circuit is coupled to the input transistor pair to get high current efficiency. Reduced biasing to restore the full threshold voltage is achieved by shorting out resistive means coupled between the common bulk of the input transistor pair and the common bulk of the biasing circuit.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: September 2, 2003
    Assignee: Dialog Semiconductor GmbH
    Inventor: Axil Panwitz