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A particular kind of electronic device or circuit known as a bipolar PWM (Pulse Width Modulation) controller produces variable-width pulses at a set frequency. It is frequently used in power electronics applications to control the speed of motors, manage power supply output voltage, and reduce LED light intensity, among other things.
The ability of the controller to produce both positive and negative pulses is referred to as “bipolar” in the context of bipolar PWM controllers. The controller normally has a feedback mechanism to compare the actual output with the reference and a reference voltage input to determine the desired output level. The controller modifies the width of the positive and negative pulses based on this comparison to produce the desired output.
The controller normally works by comparing the reference voltage with either a sawtooth waveform with a fixed frequency or a triangle waveform. The start and stop of each pulse are determined by the points where the reference voltage and waveform intersect. The required control target can be attained by modifying the pulse width by controlling the average value of the output.
In applications where precise control of power distribution or signal modulation is needed, bipolar PWM controllers are frequently employed. They are frequently accomplished using microcontrollers or digital signal processors (DSPs) or integrated into specific PWM controller chips. Depending on the application and the device being used, a bipolar PWM controller’s unique features and capabilities may change.
The Global Bipolar PWM Controller market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
For brand-new small satellites in space, Renesas Electronics has shipped the first plastic-packaged, radiation-tolerant PWM controller and GaN FET driver. Renesas Electronics Corporation (TSE:6723), a leading provider of advanced semiconductor solutions, today unveiled the first radiation-tolerant PWM controller and Gallium Nitride (GaN) FET driver for DC/DC power supplies in small satellites (smallsats) and launch vehicles.
These products are plastic-packaged and feature Renesas’s proprietary technology. The isolated flyback and half-bridge power stages, as well as motor control driver circuits in satellite buses and payloads, are perfect applications for the ISL71043M single-ended current mode PWM controller and ISL71040M low-side GaN FET driver.
Private “new space” enterprises have started launching smallsats to create expansive constellations that operate in numerous LEO planes. Global broadband Internet connections are provided by Smallsat mega-constellations, together with high-resolution Earth observation imagery for tracking land and water resources.
