MAX8934AEVKIT+

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The MAX8934AEVKIT+ is a prime exampleof an Evaluation and Demonstration Board and Kit. It is designed to evaluatethe MAX8934A step-down DC/DC converter. This board was designed to provideswitching mode power converter designers with a versatile, high-performancetool to evaluate, test, and debug new power designs. As with most developmentboards, this one comes with specialized features including the following:

• Versatility: This board is equipped with a user adjustable switching frequency (100kHz to 1.2MHz) and a wide input voltage range of 4.5V to 28V. It also has an optional parallel operating capability, operating up to a combined peak current of 6.5A.
• High precision: With the integrated overcurrent protection and phase-lock loop (PLL) control, the board has a wide frequency range with better accuracy and faster transient response times. The operating parameters can be programmed according to the application’s requirements.
• Easy interface: The board is ready-to-use with a straightforward user interface. It can be connected to a PC using a USB connection, with the connected software (MAXFORGE) providing access to further device configuration features. It also includes programming support for various development software (such as C language and RealView).

The MAX8934AEVKIT+ board was designedfor use in a wide variety of power applications. It is a suitable solutionfor applications such as AC/DC power supplies, sensor power supplies, automotivepower supplies, as well as other applications which require high-efficiencyand power-downs. It can also be used to evaluate DC/DC converters with multipleoutputs. The board consists of a variety of components and configurations.At its core the board consists of:

• MAX8934A DC/DC converter - The MAX8934A is a high-efficiency, synchronous buck switching regulator that can deliver an adjustable output voltage from 0.6V to the input voltage. It has a wide input voltage range of 4.5V to 28V and a switching frequency range of 100kHz to 1.2MHz.
• Gate Driver circuit - The MAX8934A supports parallel operation of its output channels and requires an external gate driver circuit. The MAX8934AEVKIT+ board includes a gate driver circuit which provides the necessary gate drive capability for up to six MOSFETs.
• Power control and protection circuit - The board includes a power control and protection circuit, which provides over-load and short-circuit protection, as well as features such as programmable current limit, over voltage protection, and thermal shutdown.

The MAX8934AEVKIT+ board is not limited toonly DC/DC converters with multiple outputs. It is also capable of evaluatingother regulators such as linear and switching regulators. Additionally,it can be used as a reference design for evaluation and testing of discretecomponents such as MOSFETs, schottky diodes, and inductors. The boardincludes an on-board oscilloscope to measure switching waveforms. Theboard also has the capability to measure inductor and capacitor ESR values,as well as measure loop stability with the MAXFORGE software.

The MAX8934AEVKIT+ is the ideal toolfor power converter design engineers looking to upgrade their product designwith higher performance. By utilizing the advanced capabilities of theMAX8934A DC/DC converter and the included power control and protectionfeatures, the design engineer can quickly adapt to changing applicationneeds and develop a product that provides higher efficiency, better noiseperformance, and improved power-down capability.

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