Patent ID: 7805622
Filing Date: 2010-09-28
Classification: G06F

Abstract:
1. A pluggable module for releasable connection to a base unit, the pluggable module being arranged to draw electrical power from a power supply in the base unit when connected thereto, the module comprising power control circuitry adapted to supply a supply voltage to at least a subset of components within the module according to a time-based programmable profile stored in a memory of a controller to gradually adjust the supply voltage to a desired value over time to avoid a substantial voltage drop or excessive current changes in the power supply, wherein the controller is configured to generate a control signal for input to the power control circuitry according to the time-based programmable profile, and the power control circuitry is adapted to supply the supply voltage to said at least a subset of components in an inverse relationship to the control signal, and wherein the power control circuitry include an adjustment input, a ground connection, and an output for outputting the supply voltage, the pluggable module further comprising: a first resistor coupled between the output and the adjustment input; a second resistor coupled between the adjustment input and the ground connection; a third resistor coupled between the adjustment input and the control signal from the controller; and a capacitor coupled between the output and the ground connection.