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AssigneeMicrochip Technology Incorporated
InventorsMarc Tan, Alexander Mednik, Simon Krugly, Wilson Wai-Sum Chan
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The invention relates to methods for supplying current to an auxiliary power supply for the control circuit of a switching regulator. The auxiliary power supply is connected in parallel to a first switch of the switching regulator. The auxiliary power supply comprises a second switch. During the nonswitching stage of the switching regulator, the second switch has significant impedance so as to power up the auxiliary power supply gradually and to suppress the flow of large or oscillatory currents which may cause damage or create interference. During the switching stage of the switching regulator, the second switch has negligible impedance so as to avoid undue dissipation within the path for the supply of current.
A method for supplying current to a load through a switching regulator comprising an auxiliary supply in parallel with a first switch, the auxiliary supply and the first switch sharing a common node coupled to an inductor and the load, the auxiliary supply comprising a diode, a second switch, and a capacitor, the method comprising:
A method for supplying current to an auxiliary supply of a switching regulator, wherein the auxiliary supply is connected in parallel to a first switch of the switching regulator and the auxiliary supply comprises a diode, a second switch, and a capacitor, the switching regulator coupled to a load through an inductor, the method comprising:
Dependencies are inferred from the claim text.