MAX20735EVKIT#

Series:	--
Part Status:	Active
Main Purpose:	DC/DC, Step Down
Outputs and Type:	1, Non-Isolated
Voltage - Output:	1V
Current - Output:	40A
Voltage - Input:	4.5 V ~ 16 V
Regulator Topology:	Buck
Frequency - Switching:	400kHz
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	MAX20735

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MAX20735EVKIT# is a evaluation board that enables designers to evaluate and develop off-line, AC/DC and DC/DC power supplies. It provides the designer with a comprehensive platform to evaluate components used in power supplies such as inductors, circuit protection components, power ICs, standby controllers and integrated circuits.The board features two separate power channels for step-down DC/DCs converters and a dedicated AC/DC channel for constant voltage and constant current applications. It is based on a Maxim MAX20735EVKIT# product family, which includes high-performance microcontrollers, A/D converters and power transistors. The board accepts a wide range of voltage input from AC (0-264 VAC) and DC (0-640 VDC) sources, making it suitable for a broad range of AC/DC power supplies. The board is designed to operate in a high-efficiency mode while providing comprehensive protection against various fault conditions.The board provides an easy-to-use graphical user interface (GUI) based on USB communications that facilitates evaluation of components, features and designs. The GUI includes a variety of graphical plots, customizable output voltages and currents as well as fault condition thresholds. The board also includes an RS-232 port and an LCD to display information such as output voltages, currents and other parameters.The MAX20735EVKIT# includes protection features such as over-current, over-voltage, under-voltage, short-circuit and thermal protection to protect the circuit against various fault conditions. It also includes EMI/EMC filtering circuitry, which is used to reduce interference from digital and analog circuits within the system.Working PrincipleThe MAX20735EVKIT# works on the principle of stepped down DC-DC converter. The board utilizes a single phase voltage feedback to ensure that the voltage is regulated under all operating conditions. The voltage is then further divided into an external and internal voltage loop. The external voltage loop maintains the output voltage at the designed level by constantly monitoring the output voltage. The internal loop then adjusts the output current to a specified level in order to obtain optimal performance from the DC-DC converter.The MAX20735EVKIT# also features a specialized standby controller IC, which is used to control the power supply’s status in standby mode. The controller senses the presence of an active device on the power supply input and switches the output voltage accordingly. The board also features an on-board temperature sensor that is used to monitor the temperature of the power stages and provide a protection against thermal overloads.The MAX20735EVKIT# effectively eliminates the need for external power components, thus saving board space and reducing cost. With its built-in protection features, the MAX20735EVKIT# facilitates the development of DC/DC and AC/DC power supplies to meet the most stringent industry safety and performance requirements. The availability of the graphical user interface further makes it easy to design and evaluate components such as inductors, EMI/EMC filters, power transistors, voltage regulators, etc. Thus, enabling designers to accelerate their time to market.

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