TOP246GN

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POWER MANAGEMENT INTEGRATED CIRCUIT or PMIC is a term used for a microchip or integrated circuit (IC) which manages power in a system or device. PMICs make electric power accessible by providing power management functions such as: (1) converting AC input to different DC output; (2) providing power-on reset, system reset, and soft-start functions; (3) providing over-voltage and under-voltage protection; (4) providing over-temperature protection; (5) switching and limiting power dissipation; and (6) accurately measuring battery voltage, temperature, and charge. It is also used to control the power of high-power systems such as motors, lighting and power supplies.

AC DC converters are designed to convert alternating current (AC) to direct current (DC). They provide a fixed output voltage, usually 5V or 12V, and offer a high degree of isolation between the input and the output. AC DC converters are used in a variety of applications such as laptop computers, lighting systems, scientific instrumentation, and manufacturing equipment. AC DC converters come in a range of forms, from integrated circuits (ICs) to discrete components.

The TOP246GN is a PMIC AC DC Converter specifically intended for offline switcher applications. It is a member of the TOPSwitch family, which are market-leading, off-line power-conversion ICs. The TOP246GN is a simple, fixed-frequency current-mode off-line switcher IC that receives power from an input power source, typically an external switching transformer. The device operates as a low-frequency, fixed-frequency current mode (CCM) PWM controller. The switching frequency can be adjusted with 10 different external resistors, allowing the designer to optimize device performance.

The TOP246GN features an automatic power factor correction (PFC) control, which reduces the input current distortion, providing high efficiency and minimized power dissipation. It also features a comprehensive protection system including thermal shutdown, adjustable over-voltage protection, and a variety of fault signals to indicate over-temperature, open loop, or overvoltage condition.

The device operates from an input voltage range from 85 VAC to 264 VAC, and includes a low standby power mode, resulting in low power consumption in standby. It also has high system efficiency with minimal external components, which not only saves cost, but also reduces system size, current noise, and power dissipation. The device also offers a 3 MHz clock operation for high efficiency, fast set up, and reduced EMI.

In terms of its application field, the TOP246GN is an ideal solution for a wide range of offline power supplies. It can be used in power adapters or chargers, as well as in lighting and consumer electronics applications. Furthermore, it is also ideal for any application requiring a fixed frequency, current mode PFC offline controller with integrated PFC, over-voltage protection, and thermal and fault protection.

In summary, the TOP246GN is a highly efficient PMIC AC DC Converter specifically intended for offline switching applications. It offers high power conversion efficiency and an extensive protection system, while its low standby power mode and quick set up features enable reduced system costs and improved EMI performance.

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