Power conversion controller having an adaptive peak current reference
AssigneeImmense Advance Technology Corp.
InventorsWei-Chuan SU, Ko-Yen LEE
Life of this patent
Estimating the term…
Abstract
A power conversion controller having an adaptive peak current reference, including: a peak current reference generation means, used for generating a peak current reference signal by performing an adaptive arithmetic operation on an output voltage feedback signal and a power source signal; and a comparator means, used for generating a gating signal by performing a voltage comparison operation on the peak current reference signal and a current sensing signal.
Claims9
A power conversion controller having an adaptive peak current reference, used for implementing a power conversion circuit, the controller comprising:
- a peak current reference generation means, used for generating a peak current reference signal by performing an adaptive arithmetic operation on an output voltage feedback signal and a power source signal;
- and
- a comparator means, used for generating a gating signal by performing a voltage comparison operation on said peak current reference signal and a current sensing signal.
A LED driver controller having an adaptive peak current reference, comprising:
- an adaptive multiplication means, used for generating a first scaled signal and an adaptive gain by performing an auto gain control amplification on a power source signal, and generating a second scaled signal by amplifying an output voltage feedback signal with said adaptive gain;
- an adder means, used for generating a sum signal by adding said first scaled signal and said second scaled signal;
- a multiplication means, used for generating a peak current reference signal by multiplying said sum signal with said first scaled signal;
- and
- a first comparator means, used for generating a gating signal by performing a voltage comparison operation on said peak current reference signal and a current sensing signal.
A LED driver controller having an adaptive peak current reference, comprising:
- a first buffer means, used for generating a first set of signals by performing a buffer-and-scale operation on a power source signal;
- a first multiplexer means, used for providing a first scaled signal by performing a multiplexing operation on said first set of signals;
- a counter means, used for generating a plurality of digital signals to control said multiplexing operation by performing a count down operation;
- a second comparator means, used for generating a count down signal to control said count down operation by performing a voltage comparison operation on said first scaled signal and a DC voltage;
- a second buffer means, used for generating a second set of signals by performing a buffer-and-scale operation on an output voltage feedback signal;
- a second multiplexer means, used for providing a second scaled signal by performing a multiplexing operation on said second set of signals, under control of said plurality of digital signals;
- an adder means, used for generating a sum signal by adding said first scaled signal and said second scaled signal;
- a multiplication means, used for generating a peak current reference signal by multiplying said sum signal with said first scaled signal;
- and
- a first comparator means, used for generating a gating signal by performing a voltage comparison operation on said peak current reference signal and a current sensing signal.
Dependencies are inferred from the claim text.