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A voltage sequencing circuit powers-up electrical systems by sequentially enabling a series of power supply lines to the electrical system. After each power supply line is enabled, the voltage sequencing circuit waits a pre-programmed delay time before enabling the next power supply line. The delay

A voltage sequencing circuit powers-up electrical systems by sequentially enabling a series of power supply lines to the electrical system. After each power supply line is enabled, the voltage sequencing circuit waits a pre-programmed delay time before enabling the next power supply line. The delay time allows the newly enabled power supply line to settle. Additionally, the voltage sequencing circuit constantly monitors previously enabled power supply lines while continuing to enable the remaining power supply lines. If any of the previously enabled lines fail, the voltage sequencing circuit disables the power supply line before reinitiating a complete power-up sequence.

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1. A voltage sequencing device comprising:a plurality of electrical power sources, each configured to supply electrical power at an output; a control circuit configured to generate an enable signal for each of the plurality of electrical power sources in a predetermined sequence and with a respectiv

1. A voltage sequencing device comprising:a plurality of electrical power sources, each configured to supply electrical power at an output; a control circuit configured to generate an enable signal for each of the plurality of electrical power sources in a predetermined sequence and with a respective delay between consecutive enable signals; and a plurality of monitors corresponding to respective ones of the plurality of electrical power sources, each monitor configured to provide a monitor signal indicative of the electrical power supplied at the output of the corresponding electrical power source, wherein the control circuit includes decision logic for determining that the electrical power supplied at the output of an electrical power source for which an enable signal was generated is stable based on the monitor signal corresponding to the electrical power source, and wherein the control circuit generates an enable signal for a next one of the plurality of electrical power sources in response to the determination.