STR-L472

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STRL472 is an integrated AC to DC power supply controller capable of delivering up to 5A of output current. It is mainly used in a wide range of electronic products such as consumer electronic devices, home audio systems, and professional audio equipment. It can also be used for LED driver applications and power supplies for network equipment.

The STRL472 integrates several power supply functions in a single package including power factor correction (PFC), active power factor correction (APFC), and half-bridge resonant converter control. It is also equipped with several features such as soft start, over-voltage protection, current sharing, temperature sensing, and over-current protection.

The STRL472 integrates a control system and power components on a single integrated circuit. This allows it to achieve high efficiency and low heat dissipation. The integrated control system simplifies the design process. The enhanced protection circuitry reduces the number of components needed in the power supply design.

The STRL472 has two separate output power stages, the PFC stage and the APFC stage. The PFC stage utilizes a 2-stage boost converter to convert AC voltage to a DC voltage. The APFC stage uses a 2-stage buck converter to further reduce the DC voltage. Both stages are controlled by a digital control IC.

The STRL472 has a dedicated current sensing and feedback input for each power stage. This allows the controller to provide accurate current control and maintain stable power delivery. The controller also features a dedicated VCC voltage sensing and feedback input. This allows the controller to automatically adjust the operating voltage and ensure that the power supply operates at a safe level.

The STRL472 operates in three different modes: continuous conduction mode (CCM), discontinuous conduction mode (DCM), and pulse skipped mode (PSM). CCM mode is used most often in power supplies, while DCM mode is used for applications requiring better efficiency or higher power density. PSM mode is used in applications requiring high power density and low noise.

The STRL472 is compatible with all types of AC input, including both single-phase and three-phase. It also supports a wide range of DC output voltage levels ranging from 5 to 48V. This makes it well-suited for a wide range of applications.

The STRL472 is designed to comply with the latest safety and EMC standards. It also features built-in monitoring and protection functions such as over-voltage, over-current, and under-voltage protection. This ensures the safe and reliable operation of the power supply.

In summary, the STRL472 is a highly integrated AC to DC power supply controller capable of delivering up to 5A of output current. It is suitable for a wide range of applications, from consumer electronic devices to LED lighting systems. This integrated solution simplifies the design process and ensures reliable operation of the power supply.

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