MAXIMUM POWER POINT CONTROLLER TRANSISTOR DRIVING CIRCUITRY AND ASSOCIATED METHODS
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United States of America Patent
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Issued Date -
Apr 17, 2014
app pub date -
Oct 16, 2012
filing date -
Oct 16, 2012
priority date (Note) -
Abandoned
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Abstract
An electric power system includes a string of N maximum power point tracking (MPPT) controllers having output ports electrically coupled in series, where N is an integer greater than one. At least one of the N MPPT controllers includes respective transistor driver circuitry powered from a power supply rail of an adjacent one of the N MPPT controllers of the string. Another MPPT controller includes an n-channel field effect freewheeling transistor electrically coupled across an output port and a resistive device electrically coupled between an input port and a gate of the freewheeling transistor, such that the freewheeling transistor operates in its conductive state when power is applied to the input port and a control subsystem of the controller is in an inactive state.
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