STR3A161HD

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The STR3A161HD is an integrated, high-performance offline switcher from ST Microelectronics. It is designed for applications that require high efficiency and low operating costs. It is a full-featured offline switcher, with a power switch and integrated power management array to provide a highly efficient and cost-effective solution. The STR3A161HD is ideal for a range of applications, such as charging handheld devices, TV receivers, set-top boxes, home appliance applications, general purpose industrial applications, and more.

The STR3A161HD is a MOSFET-based output switcher, with switch voltage range of 6V to 280V and operating temperature range of -40C to 85C. It includes both a primary switch and a secondary switch, with a wide range of options depending on the application. For example, it is available with either primary or secondary switches, or with both. This allows the maximum flexibility when it comes to design and system requirements.

The STR3A161HD offers an ideal combination of features and performance for AC-DC converters. It features a 500 kHz switching frequency and a low quiescent current typically 13 mA. The efficient design has excellent dynamic response and high isolation between the primary and secondary drivers. Additionally, the converter is designed for use in distributed power systems, offering improved system performance and scalability.

The STR3A161HD also features a wide range of protection features. These include over-voltage protection, under-voltage protection, over-current protection, over-temperature protection, open-fault protection, and short-circuit protection. This ensures that the system is protected from any unexpected events and that any faults are quickly detected. Additionally, the STR3A161HD includes both external and internal ESD protection, which reduces the risk of damage due to electrostatic discharge.

The working principle of the STR3A161HD is based on the use of a Flyback topology. When the power switch is turned on, the primary winding of the transformer is energized and the transformer magnetizes, creating a high voltage across the secondary winding. This voltage is then rectified and filtered, resulting in the desired DC output voltage. The switching frequency is controlled by the internal oscillator, which can be programmed to a wide range of frequencies to meet the system requirements.

In summary, the STR3A161HD is an integrated offline switcher with excellent efficiency and a wide range of features and protection. It is ideally suited for use in a variety of AC-DC converters, and it is designed with advanced features for use in distributed power systems. The STR3A161HD also features a wide range of protection features and a low quiescent current of 13 mA, making it an ideal solution for any application requiring high efficiency and low operating costs.

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