AS1312-BWLT-45

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The AS1312‐BWLT‐45 is a high‐efficiency, high‐accuracy integrated synchronous DC‐DC buck regulator. It can switch at up to 1 MHz with excellent accuracy, providing fast and precise output voltage adjustment and improved load efficiency. This application field and working principle will be discussed in detail in the following sections.

Application Field

The AS1312‐BWLT‐45 is a versatile DC‐DC switching regulator that is suited for many different applications. It is a five‐channel synchronous buck regulator, allowing for efficient power delivery across multiple outputs. Its high efficiency and wide output voltage range make it suitable for many different power delivery applications. The AS1312‐BWLT‐45 is well‐suited for automotive, industrial, and consumer electronics applications. In addition, it is well‐suited for power transfers from high‐frequency sources, such as DCDC converters used in data centers, telecom, and medical equipment.

One of the advantages of using the AS1312‐BWLT‐45 is its adjustable switching frequency. This allows for higher efficiency at higher frequencies, and for better synchronization with external circuitry. The AS1312‐BWLT‐45 also features slew rate control, which helps reduce audible noise in the application, especially when used with high power loads.

The AS1312‐BWLT‐45 also features an integrated Over Temperature Protection (OTP) function, which helps to protect the device in the event of an overload condition. This prevents the device from sustaining any damage. The integrated OTP feature makes the AS1312‐BWLT‐45 a reliable choice for power delivery applications.

Working Principle

The AS1312‐BWLT‐45 is a synchronous buck regulator, meaning that the output voltage is regulated by switching the input voltage on and off periodically in order to achieve the desired output voltage. The AS1312‐BWLT‐45 operates in a buck‐boost circuit. In this configuration, the output voltage is higher than the input voltage, but the difference is not as large as it would be in a conventional boost converter circuit.

The AS1312‐BWLT‐45 features a fully‐integrated synchronous buck converter. This means that the switching frequency can be adjusted via a dedicated control pin and the internal OTP function provides additional over‐temperature protection. The AS1312‐BWLT‐45 is also equipped with an advanced synchronous rectification control circuit, which helps to further improve the device\'s efficiency.

The AS1312‐BWLT‐45 uses a synchronous switching technique and operates in step-down mode. The input voltage is connected to one of the two primary switches and is applied to the synchronous rectifier (SR). The SR then controls the flow of current to the output. The average output voltage is determined by the duty cycle of the SR and is adjustable by the duty cycle control pin.

The AS1312‐BWLT‐45 also features an integrated low‐side MOSFET, which helps to reduce losses in the output stage. Additionally, it has an integrated circuit (IC) for controlling the on‐off of the primary switch and provides voltage clamps for the output stage. The AS1312‐BWLT‐45 also has an integrated active discharge function, which helps to reduce the output voltage ripple.

The AS1312‐BWLT‐45 is a highly efficient and accurate synchronous DC‐DC buck regulator. Its versatility, wide range of output voltage, adjustable switching frequency, active discharge, and integrated OTP functions make it suitable for many different applications. The advanced synchronous rectification control circuit also helps to improve the device\'s efficiency. With these features, the AS1312‐BWLT‐45 is a reliable choice for high‐frequency power delivery applications.

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