STR-W6053S

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STR-W6053S is a low cost, high performance, off-line switching regulator which utilizes a quasi-resonant topology. This device is designed for flyback type AC- to-DC applications with loading down to <0.1W, providing high efficiency and low power consumption. The device integrates an improved quasi-resonant controller and a 700V MOSFET, which has a guaranteed high maximum audible noise, high efficiency and a high secondary side isolation. It is suitable mainly for consumer applications such as color TVs, set-top boxes, LCD lighting and adapters.

The STR-W6053S has an operating range of up to 500KHz with an accurate peak current control. The device is also provided with a soft-start function and a burst mode support that allow the operation in stand-by mode. The circuit features an over-voltage protection, a time out protection, an over-load protection and an over-temperature protection.

The STR-W6053S uses a special control method known as hybrid resonance mode control. This method uses the combination of both the quasi-resonant (QR) and hysteretic control to reduce the overall switching losses. The device also incorporates a number of features to reduce the audible noise, including an analysis of the second harmonic\'s conduction angle, special switching waveforms, precise tie-off and a blanking time.

The device is also provided with an open loop current mode control, which can regulate the output current universally. This feature is often used to power LED lighting or other current feedback applications. The device also has a secondary side control, which can be used to control the output voltage or current.

In summary, the STR-W6053S is a highly integrated and advanced switching regulator, which can be used for large variety of DC/DC applications, mainly in consumer electronics. The device is provided with a number of features such as over-voltage, over-load, over-temperature and time out protection, which makes it highly reliable. The device can automatically switch between the QR and hysteretic control modes, resulting in high efficiency and low power consumption. The device also provides open-loop current mode control and secondary side control, allowing for flexible and accurate control of output current and voltage. All in all, the STR-W6053S is an excellent choice for AC/DC applications with powers ranging from <0.1W to 25W.

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