Data processing system including a hot-plug circuit for receivin

Details Data processing system including a hot-plug circuit for receivin Data processing system including a hot-plug circuit for receivin

1996-09-13

1999-04-27

Sheikh, Ayaz R.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

395280, 395284, 361 58, 365149, G06F 1300

Patent

active

058988440

ABSTRACT:
A hot-plug circuit for receiving a high-current load is disclosed. In accordance with a preferred embodiment of the present invention, the hot-plug circuit comprises a transistor, a capacitor, a resistor, and a control circuit module. The transistor is coupled between a power supply and an input that is adapted to receive the high-power adaptor card. The capacitor is coupled between a first terminal and a second terminal of the transistor. The resistor is coupled to the first terminal of the transistor. Finally, the control circuit module is for applying a first bias voltage to the second terminal of the transistor via the resistor in order to turn the transistor off during an absence of the high-current load, and for applying a second bias voltage to the second terminal of the transistor via the resistor in order to turn the transistor on under a linear conduction mode upon an initial contact of said high-current load to the input. As such, voltage dropouts and noise transients from the hot-plugging of a high-power load are minimized.

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IBM Technical Disclosure Bulletin, vol. 32, No. 5B--Oct. 1989, "Slow Start Circuit".
IBM Technical Disclosure Bulletin, vol. 34, No. 4A--Sep. 1991, "Hot-Plug Circuit".

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