Output feedback and under-voltage detection system
First Claim
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1. A power supply comprising:
- an auto-restart circuit for alternatingly disabling and enabling the power supply when the power supply is experiencing a fault condition, the alternating disabling and enabling of the power supply continuing until the fault condition is removed; and
an input under-voltage detector to detect an input under-voltage condition only when the power supply is disabled by the auto-restart circuit and during power-up.
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Abstract
A switched mode controller for properly handling an under-voltage condition in a power line which includes a current mirror for receiving current from the power line; a reference current source coupled to the current mirror for supplying a reference current; and a power transistor coupled to the reference current source, the power transistor generating a pulse width modulated signal when current from the power line exceeds the reference current, the power transistor being disabled when current from the power line is less than the reference current.
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Citations
2 Claims
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1. A power supply comprising:
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an auto-restart circuit for alternatingly disabling and enabling the power supply when the power supply is experiencing a fault condition, the alternating disabling and enabling of the power supply continuing until the fault condition is removed; and
an input under-voltage detector to detect an input under-voltage condition only when the power supply is disabled by the auto-restart circuit and during power-up. - View Dependent Claims (2)
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Specification
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Current AssigneePower Integrations Incorporated
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Original AssigneePower Integrations Incorporated
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InventorsLund, Leif, Balakrishnan, Balu, Dienguerian, Alex
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Primary Examiner(s)BERHANE, ADOLF D
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Application NumberUS09/650,116Time in Patent Office575 DaysField of Search363/49, 363/50, 363/55, 363/56.05, 363/56.03, 323/313, 323/315, 323/276, 323/282US Class Current363/55CPC Class CodesH02M 1/32 Means for protecting conver...H02M 3/33507 with automatic control of t...
