STR-V152

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The STR-V152 is a switch-mode power converter that combines the power management capabilities of AC/DC and offline technology in a single circuit. Designed for high efficiency, low EMI and long battery life, the STR-V152 is suitable for a wide range of applications, from consumer electronics and wireless networks to industrial, automotive and aerospace applications.

In most cases the application field and working principle of the STR-V152 is related to the type of AC/DC technology used. It is a Quasi-Resonant (QR) Switch mode converter. This QR topology utilizes a secondary-side synchronous rectifier and a primary-side unregulated switch. It also has an active voltage clamp feature, which keeps the peak voltage within pre-set limits, improving the over-load capability of the circuit and allowing the possibility of higher operating frequency.

The STR-V152 is typically used in isolated converter applications, where it provides galvanic isolation between input and output. This is accomplished by using a transformer, which allows the primary and secondary sides to be isolated electronically, which makes the power conversion more efficient.

The working principle of the STR-V152 is based on the AC/DC topology combined with the switching principle. When the input voltage is applied, two transistors (M1 and M2) turn on, forming a bridge rectifier circuit, and a secondary winding of the transformer is energized. This winding is connected to a diode bridge, which converts the AC to DC and provides galvanic isolation. The output of the diode bridge is then rectified and filtered to provide a stable DC output. A secondary winding is connected to the primary side of the power converter, and the output is regulated using a pulse width modulation technique.

The advantage of the STR-V152 is that its working principle is quite simple and offers high efficiency, low EMI and long battery life. In addition, it can be used with different control algorithms, such as peak current control, pulse width modulation or bang-bang control. The STR-V152 is also capable of operating at high switching frequencies, which can reduce power losses and provide a more efficient output.

The STR-V152 is an ideal solution for applications that require a reliable and efficient power conversion stage. With its high efficiency and low electromagnetic interference, it can be used in many different industries, such as consumer electronics, industrial, automotive and aerospace applications.

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