MAX20028ATJA/V+

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The MAX20028ATJA/V+ is part of a range of DC to DC switching controllers offered by Maxim Integrated and is designed to provide users with a wide range of performance and options. The device is suitable for use in numerous applications including automotive, industrial and consumer, as well as general purpose DC to DC applications. It includes a boost controller suitable for single or dual output capability, and a synchronous buck controller with point-of-load accuracy suitable for applications with large current requirements.

DC to DC switching controllers are widely used in many applications to step down or step up voltage levels. The MAX20028ATJA/V+ is a single-chip DC to DC switching controller that integrates a fixed frequency PWM boost converter, a fixed frequency synchronous buck controller, and a set of digital control and protection features into a single package.

The device features an adjustable operating frequency with synchronization capability and adjustable operating frequency of the buck controller. This ensures the device can be used with a wide range of external components. Additionally, it offers an integrated soft start to ensure smooth power transitions and an integrated fault detect with hard reset output. Other features of this device include integrated gate drivers, adjustable fast-transient response, adjustable dead-time delay, and adjustable soft-stop current.

The MAX20028ATJA/V+ is primarily designed to provide an efficient and reliable power supply solution for dc-dc converters with a wide range of current and voltage output requirements. The boost controller is capable of providing a single output at up to 6A from an input of 2.5V up to 13V. The synchronous buck controller is capable of providing up to 7A from an input of 4.5V to 13V. It can also be used for a dual voltage rail configuration requiring contiguous outputs of 8A each.

At the heart of the MAX20028ATJA/V+ is an acclaimed Peak-and-Hold Modulation control architecture that ensures fast transient response and accurate loop compensation. This architecture helps prevent unwanted peak current modes that are associated with fixed frequency pulse-width modulation (PWM) control. The synchronization capability of the device allows the internal oscillator frequency to be synchronized with an external clock signal. This allows the switching frequency to be optimized for specific system requirements.

The MAX20028ATJA/V+ also features a comprehensive set of protection features to ensure safe and reliable operation. These include Over-Current Protection (OCP) and Undervoltage Lockout (UVLO). The OCP monitors output currents and will trip with an adjustable lockout time to shut down the converter in the event of a fault or overload. The UVLO function ensures that the output voltage does not fall below the minimum operating limit. The device also includes a thermal shutdown to provide protection if the junction temperature exceeds a preset limit.

Overall, the MAX20028ATJA/V+ is an efficient and reliable solution for DC to DC switching applications. It is highly integrated, user-friendly, and has a wide range of features and performance options. It provides users with a high level of functionality and flexibility for a wide range of applications.

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