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1.发明申请公开(公告)号：US20190165735A1
公开(公告)日：2019-05-30
申请号：US15827995
申请日：2017-11-30
Applicant: Texas Instruments Incorporated
Inventor： Oddgeir Fikstvedt
CPC classification number: H03F1/0227 , H03F3/16 , H03F3/195 , H03F3/211 , H03F3/245 , H03F3/604 , H03F2200/255 , H03F2203/21178
Abstract: Methods and apparatus for providing high efficiency power amplifiers for both high and low output power levels are disclosed. An example apparatus includes a first amplifier to amplify a signal from a host device; and transmit the amplified signal to an antenna; a second amplifier to amplify the signal from the host device; and transmit the amplified signal to the antenna; and first, second, and third switches to: when the first and second switches are closed and the third switch is open, couple the first amplifier to the second amplifier in a parallel structure; and when the first and second switches are open and the third switch is closed, couple the first amplifier to the second amplifier in a stacked structure.
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公开(公告)号：US20250076945A1
公开(公告)日：2025-03-06
申请号：US18498757
申请日：2023-10-31
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Ruchi Shankar , Robin O. Hoel , Patrick Seem , Oddgeir Fikstvedt , Jan-Tore Marienborg
IPC: G06F1/26 , G06F1/3203 , H03K3/356 , H03K19/0185
Abstract: Embodiments disclosed herein relate to split rail architecture for power supplies in a system, and more particularly, to providing isolation and control of a power supply. In an example, an integrated circuit device is provided that includes a device voltage supply, an input/output (I/O) voltage supply coupled to the device voltage supply, and a level shifter circuit coupled to the I/O voltage supply. The level shifter circuit includes a pair of cross-coupled p-type metal-oxide semiconductor field effect transistors (PMOS transistors), a pair of n-type transistors (NMOS transistors) coupled between the pair of cross-coupled PMOS transistors and a ground connection, and an inverter circuit coupled to the device voltage supply and the level shifter circuit. The level shifter circuit further includes a capacitor coupled to the pair of cross-coupled PMOS transistors and the ground connection and is in parallel with respect to a first one of the pair of NMOS transistors.
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公开(公告)号：US10454426B2
公开(公告)日：2019-10-22
申请号：US15827995
申请日：2017-11-30
Applicant: Texas Instruments Incorporated
Inventor： Oddgeir Fikstvedt
Abstract: Methods and apparatus for providing high efficiency power amplifiers for both high and low output power levels are disclosed. An example apparatus includes a first amplifier to amplify a signal from a host device; and transmit the amplified signal to an antenna; a second amplifier to amplify the signal from the host device; and transmit the amplified signal to the antenna; and first, second, and third switches to: when the first and second switches are closed and the third switch is open, couple the first amplifier to the second amplifier in a parallel structure; and when the first and second switches are open and the third switch is closed, couple the first amplifier to the second amplifier in a stacked structure.
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