MAX20028ATJA/VY+

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Part Status:	Preliminary

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Introduction of MAX20028ATJA/VY+

The MAX20028ATJA/VY+ is a DC/DC stepdown switching controller, which could provide additional flexibility, efficiency, and reliability needed by a wide range of applications. It is built with advanced architecture in package, which provides reliable operation in both light load and heavy load conditions and helps to reduce system development time, cost, and board space.

Application Field of MAX20028ATJA/VY+

The MAX20028ATJA/VY+ could be widely used in embedded systems where high reliability and small form factor is necessary, such as the communications, industrial and medical equipment, company data centers, and transportation systems. Its features such as extremely fast current and voltage loop response, advanced synchronous rectification, and advanced input voltage sensing capabilities, provides great flexibility for different application requirements. Additionally, the use of integrated features and advanced architecture also help to more improve efficiency with fewer external components and system cost.

Features of MAX20028ATJA/VY+

The MAX20028ATJA/VY+ is built with an array of features that enable the device to provide reliable performance when used in different applications mentioned above. Some of the biggest features includes:

• Input Voltage Range: 4.5 V to 40 V
• Wide VOUT Range: 0.6V to 6V
• 5V to 24V Gate Driver Output
• High Speed Accurate Dual ADC
• On-the-Fly Tracking
• Power-Good Output and Enable
• Selectable Burst Mode and DCM Operation
• Support Fast Transient Response

The MAX20028ATJA/VY+ also integrates complete fault protection including output undervoltage lockout (UVLO), input voltage range, and current sensing.

Working Principle of MAX20028ATJA/VY+

The MAX20028ATJA/VY+ is a synchronous stepdown DC/DC converter, which works by regulating the output voltage through switching the power switch at a frequency determined by a control loop. The loop controls the switch on/off time, which determines the average output current, and therefore the output voltage.The device contains an advanced control loop architecture that uses a dual stage current and voltage loop for an efficient and stable transient response, wide input voltage range, and reduced system cost. The on-the-fly tracking feature of the MAX20028ATJA/VY+ ensures that its input voltage is accurately tracked and the output voltage is balanced to reduce the risk of voltage imbalance over temperature.The output voltage is regulated by controlling the switch duty cycle, which is determined by the controller. However, when the input voltage is above the output voltage, the MAX20028ATJA/VY+ can make a bypass to provide a minimum-loss direct path from the input to the output.

Conclusion

The MAX20028ATJA/VY+ provides excellent performance and superior flexibility by integrating advanced architecture in package with an array of features. It could be widely used in embedded systems where high reliability and small form factor is required. It is also suitable in a wide range of applications needing fast current and voltage loop response, advanced synchronous rectification, and advanced input voltage sensing capabilities. The device supports fast transient response, integrated fault protection and power-good output and it is also easy to use. The MAX20028ATJA/VY+ is a must for anyone looking for a high quality, power efficient, and reliable DC/DC switching regulator solution.

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