MAX8969EVKIT#

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The MAX8969EVKIT# is a comprehensive evaluation kit with DC/DC and AC/DC (off-line) switchmode power supply (SMPS) and support components for the MAX8969. This kit allows designers to quickly get the EVK up and running, bypassing the need for in-circuit evaluation. The MAX8969 is designed to better serve a range of portable power applications using either 220V AC or DC input sources with high efficiency, low stand-by power, and superior protection.

Application Fields:

The MAX8969EVKIT# is designed for portable power applications such as power supply for mobile phones, smartphones, tablets, portable music players, game consoles, and other wearable/pocket-size devices. The wide input voltage range of the MAX8969 makes it suitable for portable devices that may be powered from AC or higher voltage DC sources. The kit provides flexibility to evaluate a variety of output secondary configurations, including buck, boost, and inverting buck/boost topologies. The MAX8969 combines a fault-protected MOSFET, a fault-protected diode, and a power-good (PGOOD) output.

Working Principle:

The MAX8969EVKIT# provides designers a convenient platform to evaluate the performance of the MAX8969 in both DC/DC and AC/DC (off-line) SMPS designs. The MAX8969 is an integrated power coupler which combines a fault-protected MOSFET, a fault-protected diode, and a power-good (PGOOD) output. The kit provides the ability to measure the output voltage of the main regulator, output voltage of the low-dropout (LDO) regulator, and the auxiliary voltage for system power-on reset (POR). The MAX8969 includes a 10V prototyping area for adding external components such as EMI filters or other circuitry.

The MAX8969 provides protection against overload, overvoltage, undervoltage, and short-circuits. The IC also features a power-good (PGOOD) output which is pulled low when the output voltage is too low or when an overload condition is detected. The gate drive of the main MOSFET is optimized to provide high efficiency under light-load conditions, and the main MOSFET is protected with cycle-by-cycle current limit. The MAX8969 also includes an adjustable overvoltage protection (OVP) threshold for the output voltage. In addition, the device has a robust protection circuitry which includes a fault detection circuit and an adjustable soft-start.

The MAX8969EVKIT# also includes an integrated graphical user interface (GUI) to help designers evaluate the device and perform theoretical and practical tests on their boards. The GUI includes features such as automatic start-up, soft start, dynamic voltage scaling, and fast transient response. The various parameters of the device can also be adjusted manually through the GUI to optimize the performance of the device under different conditions.

The MAX8969EVKIT# is an ideal solution for power supply designers looking for high performance and protection in a small package. The kit provides flexibility in evaluating a range of DC/DC and AC/DC (off-line) SMPS designs. The feature-rich GUI makes it easy to evaluate the performance of the MAX8969 in different circuit configurations. The kit also provides excellent protection with its fault detection circuit and adjustable overvoltage protection threshold. With its wide input voltage range, the MAX8969EVKIT# is an excellent solution for powering portable devices.

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