Isolated power control device, power conversion device and isolated power control method used in power conversion device

  • US 9,735,688 B2
  • Filed: 10/07/2015
  • Issued: 08/15/2017
  • Est. Priority Date: 10/11/2014
  • Status: Active Grant
First Claim
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1. An isolated power control device comprising:

  • an auxiliary isolated power circuit comprising;

    a transformer module having a primary side and a secondary side;

    a control module generating a switch control signal according to a primary side remote on/off control signal; and

    a switch module being conducted according to the switch control signal to transmit an input auxiliary power signal to the primary side of the transformer module such that the auxiliary isolated power circuit generates a target voltage signal at the secondary side, the target voltage signal having a plurality of voltage levels; and

    a voltage level identification unit configured for receiving the target voltage signal to output a secondary side remote on/off control signal so as to control a main isolated power device,wherein the main isolated power device comprises a main control circuit and a main isolated power circuit, the main control circuit controls the switches of the main isolated power circuit to perform at high frequency when the primary side remote on/off control signal is in a first state, and the main control circuit controls the switches of the main isolated power circuit to stop operating when the primary side remote on/off control signal is in a second state.

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