Introduction of the DC-DC Converter Inductor Selection Tool - Murata
Introduction of the DC-DC Converter Inductor Selection Tool - Murata
Introduction of the DC-DC Converter Inductor Selection Tool - Murata
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■Output Current – Inductance CharacteristicsL value <strong>Inductor</strong> complying current with Rippleの <strong>the</strong> Want settingvalue <strong>of</strong> Want inductor 設 定 値 current に 対 応 ripple するL 値L <strong>Inductor</strong> value complying current RippleのMax with <strong>the</strong> Max settingvalue 設 定 値 <strong>of</strong> に inductor 対 応 するL current 値 rippleChange <strong>of</strong> <strong>the</strong> inductance value when <strong>the</strong>output current is changedWhen <strong>the</strong> output current is changed, <strong>the</strong> currentamplitude will also change.The characteristics in consideration <strong>of</strong> thischange are displayed in this graph.Changes <strong>of</strong> <strong>the</strong> inductance value closer to actualconditions than <strong>the</strong> simple bias current can beevaluated.Example: Changes <strong>of</strong> <strong>the</strong> current amplitudeby changing <strong>the</strong> output current@LQM2HPN1R0MG0Output Current [A]Current Amplitude [A]0.6 0.1961.0 0.4521.4 0.522■Output Current –Loss CharacteristicsChanges <strong>of</strong> loss from high load to low loadcan be evaluated.The current (transition current) which changesfrom PFM to PWM can also be estimated.Changes <strong>of</strong> loss when <strong>the</strong> output current <strong>of</strong><strong>the</strong> <strong>DC</strong>‐<strong>DC</strong> converter is changedTransition Current
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