Invention Grant
- Patent Title: Hot-swap current-sensing system
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Application No.: US14965588Application Date: 2015-12-10
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Publication No.: US09641142B2Publication Date: 2017-05-02
- Inventor: Sudheer Prasad
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent William B. Kempler; Charles A. Brill; Frank D. Cimino
- Priority: IN6249/CHE/2014 20141211
- Main IPC: H03F3/393
- IPC: H03F3/393 ; H03F3/45 ; H03F1/08

Abstract:
One example includes a hot-swap control system. The system includes a sense resistor network provides a sense voltage in response to an output current. The system also includes a sense control circuit includes a chopper amplifier system arranged in a servo feedback arrangement to generate a monitoring voltage having an amplitude that is associated with the output current based on the sense voltage. A notch filter chopping stage filters out signal ripple in the chopper amplifier system across a unity-gain bandwidth of the chopper amplifier system, and a capacitive compensation network provides stability-compensation of the chopper amplifier system across the unity-gain bandwidth. A transconductance amplifier configured to compare the monitoring voltage with a predetermined reference voltage to generate a control voltage. The system further includes a power transistor configured to conduct the output current to an output based on the control voltage.
Public/Granted literature
- US20160173041A1 HOT-SWAP CURRENT-SENSING SYSTEM Public/Granted day:2016-06-16
Information query
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