LYT4211E2

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LYT4211E2 is a family of integrated high voltage hybrid AC/DC converter controllers used primarily in switch mode power supply designs. It provides fast load-tracking AC/DC conversion operation with high accuracy, low power consumption, and low external component count. It is suitable for a wide range of AC/DC converter applications including lighting, security systems, home appliances, communication equipment, automotive applications, and industrial.

The LYT4211E2 includes both single-ended and fully differential bridge rectifier circuits, making it particularly well-suited for applications involving AC motors. It also includes a fast-charging boost circuit for applications requiring an additional boost current for power-sensitive components. It integrates both control and protection features, significantly reducing overall system costs and complexity. The LYT4211E2 uses an adaptive slope control (ASC) technique to ensure fast load-tracking of AC/DC converter demands.

The LYT4211E2 also features a built-in current mode regulation loop and precision voltage reference, allowing it to accurately regulate both the boost and output voltages. It also incorporates several protection features, including overvoltage, overcurrent, and thermal shutdown. The device can also be configured to provide remote control of all the outputs. Additionally, the LYT4211E2 is designed to be compatible with standard four-pin motor leads, making it an excellent solution for a wide range of motor control applications.

The LYT4211E2 works by regulating the output voltage based on an input voltage signal. The signal is generated using external passive components such as resistors and capacitors, and can be controlled by either a microcontroller or a manually adjusted reference signal. When the input signal falls below the capacitor’s internal reference voltage, the output voltage is decreased. Conversely, when the input signal rises above the capacitor’s internal reference voltage, the output voltage is increased. This technique of voltage regulation is known as peak current mode control, and it results in a much faster response time when compared to the traditional voltage mode control.

The LYT4211E2 also includes several other features, such as integrated sensing, active and passive current limiting, soft start and pre-bias, and load line programming to name a few. All these features allow the LYT4211E2 to be very versatile in terms of applications. It can be used in applications such as light, security systems, and home appliances, among many others. With its fast load-tracking, low external part count, and high accuracy, the LYT4211E2 is an excellent choice for AC DC converter applications in a variety of industries.

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