×

Current mode switching regulator configured such that a measuring resistor is not needed to measure the current at an inductor

  • US 6,222,356 B1
  • Filed: 04/01/1999
  • Issued: 04/24/2001
  • Est. Priority Date: 04/01/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A current-mode switching regulator, comprising:

  • a first regulating device for voltage regulation and a second regulating device for load current regulation, each of said first and second devices having a first input, a second input, and an output, and whereby said first input of said first regulating device is connected to receive a reference signal and said second input of said first regulating device is connected to receive an output signal of the current-mode switching regulator, as a regulated variable; and

    said output of said first regulating device is connected to said first input of said second regulating device;

    a power switch connected to said second regulating device and controlled by a control signal of said second regulating device, said power switch having a load path connected between a first supply potential and a second supply potential;

    a choke device connected in said load path of said power switch; and

    an integrator connected to said choke device and to said second regulating device, said integrator generating a regulating signal by integrating, with respect to time, an inductor voltage dropping across said choke device, said regulating signal mirroring a load current and being coupled, as regulated variable, into said second input of said second regulating device.

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