US 12,081,126 B2
Mixed-mode power converter control
Brian Zanchi, Dracut, MA (US); Tim Wen Hui Yu, San Diego, CA (US); and Gregory Szczeszynski, Hollis, TX (US)
Assigned to Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Jun. 12, 2023, as Appl. No. 18/333,403.
Application 18/333,403 is a continuation of application No. 17/096,820, filed on Nov. 12, 2020, granted, now 11,689,101.
Prior Publication US 2023/0412078 A1, Dec. 21, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/158 (2013.01) [H02M 1/0025 (2021.05); H02M 1/0009 (2021.05)] 18 Claims
OG exemplary drawing
 
1. A method for controlling a power converter controlled by a pulse-width modulation (PWM) control signal, the method including:
(a) generating a current-based voltage proportional to a representative high-frequency filtered current of the power converter, wherein the representative high-frequency filtered current is time-varying and the current-based voltage is only generated in significant amounts when a frequency of the time-varying representative high-frequency filtered current is not filtered out;
(b) generating a comparison signal indicative of a difference between a voltage representative of an output voltage of the power converter and a target voltage;
(c) combining, as a modified comparison signal, (1) the comparison signal and (2) the current-based voltage;
(d) generating a PWM control signal as a function of a combination of a periodic waveform, the current-based voltage, and the comparison signal; and
(e) applying the generated PWM control signal to the power converter.