Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2004-09-01
2008-11-11
Ullah, Akm Enayet (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
C323S265000, C323S266000, C323S268000, C323S271000, C323S275000, C323S282000, C323S284000, C323S285000
Reexamination Certificate
active
07449869
ABSTRACT:
The present invention is directed to a digital controller for adjusting the duty ratio a pulse width modulation control signal used to control a power switch of a switch mode power converter. According to various embodiments, the digital controller comprises a voltage compensator module for generating a first signal (Dvoltage) representative of the duty ratio of the control signal based on a difference between an output voltage of the converter and a reference voltage. The controller also includes a current compensator module for generating a second signal (Dcorrection) representative of a modification to the duty ratio of the control signal based on an output current of the converter. A subtraction module subtracts the second signal (Dcorrection) from the first signal (Dvoltage) to thereby generate a third signal (D), which is used by a duty ratio PWM generator module to generate the pulse width modulation control signal with the appropriate duty ratio.
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Artesyn Technologies, Inc.
K&L Gates LLP
Muralidar Richard V
Ullah Akm Enayet
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