Patent ID: 6747443
Filing Date: 2004-06-08
Classification: G05F,H02M,H03K

Abstract:
A power supply regulator, comprising:a power switch coupled between first and second terminals; a control circuit coupled to switch the power switch; a current limit circuit coupled to the power switch and the control circuit to control a current through the power switch during operation of the power supply regulator, the current limit circuit having a peak current limit threshold (Ip); and an oscillator coupled to provide the control circuit an oscillating signal, the control circuit to switch the power switch in response to the oscillating signal, the oscillating signal having an operating frequency (f), wherein a maximum deliverable power value of a power supply to be regulated by the power supply regulator is trimmed during manufacture of the power supply to be a substantially constant value during operation of the power supply regulator, wherein the trimming of the maximum deliverable power value is separate from the control of the current through the power switch during operation of the power supply regulator.