MAX8723EVKIT

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Evaluation Boards - DC/DC & AC/DC (Off-Line) SMPS covers applications where a DC or AC power supply needs to be generated from a DC source. The MAX8723EVKIT from Maxim Integrated is an evaluation board that offers a highly versatile feature set to evaluate buck, boost, flyback, and forward DC/DC and AC/DC converters. This evaluation board has been well-designed to provide a wide range of functionalities for engineers working on different projects.

The MAX8723EVKIT uses a MAX8723A-MAX8723Z IC, a family of automotive-grade, monolithic high efficiency converters. This IC has an integrated power device that enables to switches between buck, boost, flyback, and forward converter operating modes with a simple switch on the board. This MAX8723A-MAX8723Z IC offers an efficient current mode control for improved transient response. The control loop consists of a rectified input voltage detection, an internal voltage reference, a power-on reset, a soft-start, a slope compensator, an error amplifier, and a low power shutdown.

The MAX8723EVKIT evaluation board is outfitted with a n-Channel Power MOSFET indicated as the high-side switch and a p-Channel indicated as the low-side switch. Additionally, the board also features test points and a configurable current sense resistor for measuring the inductor current and different external converter connections for monitoring the output voltage and the voltage across the MOSFET.

The board is designed to be compatible with a wide range of power supplies, including outlets with an AC line input, including outlets with an Auto adapter input, and outlets with a 12V battery input. When operating with an AC line input, the board is factory-set to operate in buck mode (STEPBUK = 1). The board can also operate in either boost or flyback modes by setting STEPBK = 0.

The MAX8723EVKIT Evaluation Board is an essential tool for evaluating PCB-level performance of a variety of applications from motor control to DC/DC and AC/DC power supplies. It allows users to quickly analyze the output performance and efficiency, set up the operating parameters (voltage, current, frequency, etc.), and troubleshoot any potential issues. With the onboard Smart Force technology, this evaluation board ensures a robust operation by preventing potential over-current conditions, over-voltage and temperature protection.

The MAX8723EVKIT evaluation board is equipped with two on-board dual-phase synchronous buck regulators that convert a high voltage input to a low voltage output. The two regulators are equally efficient and have an operating range of up to 28V. The board also features two pair of low-side gate drive outputs, for the two regulators, which can be independently connected to a heatsink for providing superior thermal performance. The board also has a enable pin, allowing the user to enable and disable the regulator.

The board also features a wide range of additional features for experimenting. These include enable, disable, Soft Start, power good, phase current, and output voltage control. The onboard enable pin allows the user to quickly turn the regulator on and off when necessary. The soft start feature gradually increases the output voltage to prevent system transients and minimize in-rush current. The phase current sense feature helps in monitoring the current usage of the regulator and the output voltage control pin allows the user to adjust the output voltage. The power good indicator output pin allows the user to monitor the power status of the regulator.

Overall, the MAX8723EVKIT evaluation board is a comprehensive solution for evaluating buck, boost, flyback, and forward DC/DC and AC/DC converters. The board offers an efficient current mode control with a simple switch to switch operating modes, enabling faster and improved testing for the evaluation of a variety of applications. It also features a wide range of useful features such as enable/disable pin, soft start, phase current sense, and output voltage control.

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