STR-W6753

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TheSTR-W6753 is a P-channel MOSFET integrated power switcher (PSWI) used in various types of power supplies and other power conversion applications, as well as in some applications requiring very low on-state resistance. It is suitable for applications such as DC-to-DC converter, AC-DC converter, off-line switcher, LED driver and general use in power supplies.

The STR-W6753 consists of two sections, an input section and a voltage regulator which are connected in series. The input section contains an N-channel MOSFET, an internal resistor and a bootstrap capacitor to charge itself, as well as a detection circuit for the output voltage. When an AC-DC power supply is used, the output voltage can be regulated either manually using an external transformer or through an internal feedback circuit. The voltage regulator section contains an overload protection circuit, a power control circuit and a sense resistor to control the output current.

The main application field of STR-W6753 lies in AC-DC conversion, where it can be used to convert an AC input voltage to a DC one. It is suitable for use in lighting, consumer electronics, computers and other AC-DC applications. Furthermore, it can also be used as an offline switcher, which enables electronic devices to switch between an AC and a DC power source. It can also be used in LED drivers, where it helps to reduce the complexity of the drivers and to improve the light output.

The working principle of the STR-W6753 is quite simple. When an input voltage is applied, the N-channel MOSFET is initially in the off position and the bootstrap capacitor is charged up, allowing the MOSFET to be turned on. The voltage regulator then senses the output voltage and adjusts the duty cycle of the MOSFET accordingly to control the output current. In addition, the overload protection circuit ensures that the MOSFET does not remain in the on state for too long.

In conclusion, the STR-W6753 integrated power switcher is an extremely versatile and reliable type of power device that can be used in various power conversion applications, such as AC-DC converters, offline switchers and LED drivers. Its simple working principle and protection circuit make it an ideal choice for these applications.

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