Method and apparatus to limit output power in a switching...

Details Method and apparatus to limit output power in a switching... Method and apparatus to limit output power in a switching...

2007-05-08

2007-05-08

Laxton, Gary L (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

C323S285000, C363S021120, C363S097000

Reexamination Certificate

active

11179144

ABSTRACT:
Techniques are disclosed to adjust a current limit in a switching regulator. One example switching regulator includes a switch to be coupled to an energy transfer element of a power supply. A controller to generate a drive signal is coupled to control switching of the switch to regulate an output of the power supply. A current limiter is included in the controller to adjust the drive signal to limit a current though the switch to a variable current limit value. The variable current limit value is set by the current limiter in response to an input line voltage to be coupled to the energy transfer element.

REFERENCES:
patent: 6781357 (2004-08-01), Balakrishnan et al.
patent: 6833692 (2004-12-01), Balakrishnan et al.
patent: 7049794 (2006-05-01), Wong et al.
patent: 7109696 (2006-09-01), Balakrishnan et al.
patent: 7116564 (2006-10-01), Takahashi

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