Patent ID: 6700763
Filing Date: 2004-03-02
Classification: H01L

Abstract:
A power supply protection apparatus, comprising:a first power supply for generating a first supply output level to energize a first load circuit; a second power supply for generating a second supply output level to energize a second load circuit; a clamp circuit responsive to a signal that is indicative of said second supply output level for clamping said first supply output level, when both a difference between said first and second supply output levels is outside a first normal operation range of values and said second supply output level is within a second normal operation range of values, the clamping of said first supply output level being prevented, when said difference is within said first normal operation range of values; and a detector responsive to said second supply output level indicative signal and coupled to said first power supply for varying said first supply output level to prevent the clamping of said first supply output level, when said second supply output level is outside said second normal operation range of values.