Monolithic Power Systems. has been granted a patent for a switching regulator that converts AC input voltage to output voltage for load power. The regulator features a main power switch with variable ON time durations, controlled by a circuit that responds to AC input and output voltage conditions. GlobalData’s report on Monolithic Power Systems gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Monolithic Power Systems, Power MOSFET SMPS was a key innovation area identified from patents. Monolithic Power Systems's grant share as of June 2024 was 76%. Grant share is based on the ratio of number of grants to total number of patents.
Switching regulator with adaptive main power switch control
The granted patent US12046995B2 describes a switching regulator designed to efficiently convert an AC input voltage into a regulated output voltage for powering a load. The regulator features a power stage that includes a main power switch, which is controlled by a dedicated control circuit. This control circuit generates a control signal based on the AC input voltage and the output voltage, allowing the main power switch to operate with varying ON time durations depending on different AC input voltage conditions and load currents. The ON time duration is composed of a basic time duration, along with compensatory adjustments for total harmonic distortion (THD) and power factor (PF), each influenced by specific coefficients that change according to the operating conditions.
The patent further details the functionality of the control circuit, which includes a proportional integral circuit, a basic ON time duration unit, and separate THD and PF compensation circuits. These components work together to dynamically adjust the ON time of the main power switch based on the root-mean-square (RMS) value of the AC input voltage and the load current. The coefficients used for compensation are determined by predefined thresholds for voltage and current, allowing for tailored responses to varying electrical conditions. The method outlined in the patent emphasizes the importance of adjusting the ON time duration of the main power switch to optimize performance and efficiency under different operational scenarios.
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