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Circuit and method for power control

  • US 10,534,387 B2
  • Filed: 09/21/2017
  • Issued: 01/14/2020
  • Est. Priority Date: 11/20/2015
  • Status: Active Grant
First Claim
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1. A power control circuit, comprising:

  • a direct current (DC)-DC converter configured to receive a DC-DC converter control signal, the DC-DC converter configured to output a switching output voltage signal at a node of the DC-DC converter, while the power control circuit operates in a low-dropout (LDO) mode using a linear regulator configured to output a linear supply voltage signal;

    an inductor detect circuit coupled to the node of the DC-DC converter, the inductor detect circuit configured to detect whether an inductor is coupled to the node of the DC-DC converter, in response to receiving an inductor detect enable control signal, and to output an inductor detect signal; and

    control logic coupled to the DC-DC converter and to the inductor detect circuit, the control logic configured to output the DC-DC converter control signal to activate the DC-DC converter in response to both receiving a DC-DC enable signal and the inductor detect circuit outputting the inductor detect signal after determining that the inductor is coupled to the node of the DC-DC converter.

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