Invention Grant
- Patent Title: Potential and rate adjust header switch circuitry reducing transient current
- Patent Title (中): 电位和速率调节头开关电路减少瞬态电流
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Application No.: US10918869Application Date: 2004-08-16
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Publication No.: US07570100B2Publication Date: 2009-08-04
- Inventor: Wei Dong , Hiep Tran , Hugh T. Mair , Uming Ko
- Applicant: Wei Dong , Hiep Tran , Hugh T. Mair , Uming Ko
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Lawrence J. Bassuk; W. James Brady; Frederick J. Telecky, Jr.
- Main IPC: H03K17/687
- IPC: H03K17/687

Abstract:
System and method for providing power to circuitry while avoiding a large transient current. A preferred embodiment comprises a distributed switch (such as switch arrangement 400) with a plurality of switches (such as switch 405) coupling a power supply to the circuitry. Each switch is individually controlled by a control signal and is turned on sequentially. Also coupled to each switch is a pre-driver circuit (such as pre-driver circuit 410). The pre-driver circuit comprises a potential adjust circuit (such as potential adjust circuit 505) that rapidly adjusts a voltage potential at the switch and a rate adjust circuit (such as the rate adjust circuit 520) that accelerates the power ramp-up across the switch once transient currents are no longer a concern. Adjusting the voltage potential so that the switch operates in a saturation mode increases an effective capacitance across the switch and thereby retarding the power ramp-up across the switch.
Public/Granted literature
- US20060033551A1 Switch driver with slew rate control Public/Granted day:2006-02-16
Information query
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