×

Low power mode and feedback arrangement for a switching power converter

  • US 6,605,930 B2
  • Filed: 01/09/2002
  • Issued: 08/12/2003
  • Est. Priority Date: 02/11/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. A switching amplifier for receiving an input signal and for generating a differential output signal representative of the input signal comprising:

  • a first pair of transistor switches for alternately raising and lowering a voltage potential of a first terminal of a first reactive element upon switching of the first pair of transistor switches;

    a second pair of transistor switches for alternately raising and lowering a voltage potential of the first terminal of the first reactive element upon switching of the second pair of transistor switches;

    a third pair of transistor switches for alternately raising and lowering a voltage potential of a first terminal of a second reactive element upon switching of the third pair of transistor switches;

    a fourth pair of transistor switches for alternately raising and lowering a voltage potential of the first terminal of the second reactive element upon switching of the fourth pair of transistor switches;

    a switch controller for controlling switching of the first, second, third and fourth pairs of transistor switches in accordance with the input signal for forming the differential output signal across a second terminal of the first reactive element and a second terminal of the second reactive element; and

    a low signal level detector coupled to the second and fourth pair of transistor switches for disabling the second and fourth pair of transistor switches from switching upon detection of a low input signal level condition.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×