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Systems and methods for output current regulation in power conversion systems

  • US 9,986,605 B2
  • Filed: 05/08/2014
  • Issued: 05/29/2018
  • Est. Priority Date: 04/23/2014
  • Status: Active Grant
First Claim
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1. A system controller for regulating a power conversion system, the system controller comprising:

  • a first transistor including a first transistor terminal, a second transistor terminal, and a third transistor terminal, the first transistor terminal being coupled to a fourth transistor terminal of a second transistor, the second transistor further including a fifth transistor terminal and a sixth transistor terminal;

    a first controller terminal coupled to the second resistor terminal and the second diode terminal; and

    a second diode including a third diode terminal and a fourth diode terminal, the third diode terminal being coupled to the first controller terminal, the fourth diode terminal being coupled to the first transistor terminal;

    wherein;

    the fifth transistor terminal is coupled directly to a first resistor terminal of a first resistor, the first resistor further including a second resistor terminal;

    the fifth transistor terminal is coupled directly to a first diode terminal of a first diode, the first diode further including a second diode terminal;

    the second diode terminal is coupled to the second resistor terminal;

    wherein the system controller is configured to change a first voltage of the fourth transistor terminal to turn on and off the second transistor and to affect a current flowing through an inductor.

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