PWM (Pulse Width Modulation) controllers are not a specific brand but a category of electronic devices used to regulate power delivery in various applications. These controllers are produced by multiple companies worldwide, including industry leaders like Texas Instruments (USA), Infineon Technologies (Germany), and STMicroelectronics (Switzerland). PWM controllers serve industries such as automotive, industrial automation, renewable energy, and consumer electronics. Their primary products include motor control ICs, power management modules, and DC-DC converters, enabling precise control of voltage and current in systems like electric vehicles, HVAC systems, and solar inverters. These components are critical for energy efficiency and performance optimization in modern electronic systems.