Control circuit and method for a soft-start scheme of a switch mode power supply for a power amplifier

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United States of America Patent

PATENT NO 8350541
APP PUB NO 20090143032A1
SERIAL NO

12010997

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Abstract

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There is provided a control circuit including a sampling controller configured to sample an output voltage of a power converter at an appropriate time slot by opening a control loop. A soft-start circuit configured to enable soft-starting of an internal soft-start reference voltage to start from the sampled output voltage and to control the internal soft-start reference voltage to a predetermined target value in order to pre-charge the output voltage close to an input voltage level, or to continue charging the output voltage to a predetermined output voltage value.

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Patent Owner(s)

  • NOKIA TECHNOLOGIES OY

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ojanen, Martti Turku, FI 5 55
Tiisanoja, Janne Pertteli, FI 2 32

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