METHOD FOR DETECTING A BREAKDOWN IN A SWITCHING CURRENT SOURCE AND CORRESPONDING POWER SOURCE
A method of detecting a fault of a switching electricity source having a control stage responsive to a setpoint signal to deliver a control signal that is modulated with a predetermined duty ratio (α) to a power stage that is to deliver electricity to a load. The method includes the steps of: determ...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
11.10.2012
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Subjects | |
Online Access | Get full text |
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Summary: | A method of detecting a fault of a switching electricity source having a control stage responsive to a setpoint signal to deliver a control signal that is modulated with a predetermined duty ratio (α) to a power stage that is to deliver electricity to a load. The method includes the steps of: determining at least one nominal value (αmin, αmax) for the duty ratio for normal operation, and at least one fault threshold (αSC, αOC) as a function of the nominal value; determining at least one instantaneous value (α) of the duty ratio of the signal issued by the control stage; and comparing the instantaneous value with the fault threshold. A detection circuit implementing the method is also provided. |
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Bibliography: | Application Number: US201013516143 |