公开(公告)号：US20240036076A1

公开(公告)日：2024-02-01

申请号：US17874667

申请日：2022-07-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vadim Valerievich Ivanov ,  Srinivas Pulijala ,  Piyush Kaslikar

IPC: G01R15/14 ,  G01R19/252

CPC classification number: G01R15/146 ,  G01R19/252 ,  H02M1/0009

Abstract: A current measurement and control circuit may comprise a shunt resistor coupled between supply and output nodes; a first resistor coupled to the supply node; a second resistor coupled to ground; and a transconductance amplifier having an input coupled to the first resistor to define a compensation node and another input coupled to the output node. The circuit may also include a first transistor having a first current terminal coupled to the compensation node and a second current terminal coupled to the second resistor to define a measurement node; and a second transistor having a first current terminal coupled to ground and a second current terminal coupled to the output node. The circuit may also include an ADC having an analog input coupled to the measurement node; an IDAC having an analog output coupled to the compensation node; and switches to set the circuit in a measurement or a compensation mode.

公开(公告)号：US12019101B2

公开(公告)日：2024-06-25

申请号：US17874667

申请日：2022-07-27

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vadim Valerievich Ivanov ,  Srinivas Pulijala ,  Piyush Kaslikar

IPC: G01R15/14 ,  G01R19/252 ,  H02M1/00

CPC classification number: G01R15/146 ,  G01R19/252 ,  H02M1/0009

Abstract: A current measurement and control circuit may comprise a shunt resistor coupled between supply and output nodes; a first resistor coupled to the supply node; a second resistor coupled to ground; and a transconductance amplifier having an input coupled to the first resistor to define a compensation node and another input coupled to the output node. The circuit may also include a first transistor having a first current terminal coupled to the compensation node and a second current terminal coupled to the second resistor to define a measurement node; and a second transistor having a first current terminal coupled to ground and a second current terminal coupled to the output node. The circuit may also include an ADC having an analog input coupled to the measurement node; an IDAC having an analog output coupled to the compensation node; and switches to set the circuit in a measurement or a compensation mode.

公开(公告)号：US20230353100A1

公开(公告)日：2023-11-02

申请号：US17732385

申请日：2022-04-28

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Vivek Varier ,  Srinivas Pulijala ,  Vadim Ivanov ,  Jerry Doorenbos

IPC: H03F3/16 ,  H03F1/30

CPC classification number: H03F1/301 ,  H03F3/16 ,  H03F2200/447

Abstract: An example apparatus includes: An amplifier comprising folded cascode circuitry having an input and an output, an input pair coupled to the input, clamp circuitry including: a first transistor having a first drain, a first source, and a first gate, the first source coupled to the output, a second transistor having a second drain, a second source, and a second gate, the second drain coupled to the first drain and the second gate coupled to the first drain and second drain, a third transistor having a third drain, a third source, and a third gate, the third source coupled to the output, and a fourth transistor having a fourth drain, a fourth source, and a fourth gate, the fourth drain coupled to the third drain and the fourth gate coupled to the third drain and the fourth drain.