MAX15303ETL+T

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The MAX15303ETL+T is a highly integrated, 3-channel PMIC for multi-channel DC/DC switching regulator applications. This PMIC is designed for high-end server, enterprise and datacenter applications, and offers the highest current density and best-in-class efficiency. It is ideal for powering complex multi-channel DC/DC configurations such as multi-core processors, dual die FPGAs, GPUs, and multiple voltage rails in server and communication systems.

The MAX15303ETL+T is the only device of its kind that integrates three high-efficiency switching regulators, along with various protection and monitoring functions. It is offered in a tiny 0.800mm x 0.960mm MLF—6 package, and can provide up to 3A per channel in a typical configuration, with low 72mΩ channel-to-channel on-resistance. All three channels are independently programmable, and include integrated fast diode, current sensing, and integrated under-voltage lockout (UVLO) functions.

The PMIC also features a low power standby mode, adjustable soft-start, output overvoltage and short-circuit protection, and a boot-strap capacitor for higher output voltage. With the MAX15303ETL+T, system designers can configure their own custom switching regulator solution with minimal external components. As a result, the device can simplify and optimize their solution in both size and efficiency.

The working principle of the MAX15303ETL+T is based on the buck-boost converter topology. A buck-boost converter is an efficient circuit that can be used to convert any input voltage to a fixed output voltage. It is composed of an inductor, a diode, and a switch. The diode and inductor are used as energy storage elements, while the switch is used to switch the energy storage elements in order to regulate the output voltage.

In the case of the MAX15303ETL+T, the output voltage is regulated using a pulse width modulation (PWM) signal. When the PWM signals are high, the switch is closed, and the inductor sends current to the output capacitor, which will lower its voltage if the output voltage is higher than the reference voltage. When the PWM signals are low, the switch is open, and the diode sends current to the output capacitor, which will increase its voltage if the output voltage is lower than the reference voltage.

With this topology, it is possible to regulate the output voltage of the MAX15303ETL+T from 0.6V to 4.3V. The device also features a built-in current-flow monitor, which enables precise current sensing in each channel and ensures that the switch on/off duty cycle is always under control.

The MAX15303ETL+T PMIC is commonly used in a variety of applications, including high-end servers, enterprises, and data centers. It is also suitable for powering microprocessors, GPUs, FPGAs, and multiple voltage rails in various communication systems. Moreover, thanks to its compact size, the device is suitable for design into small form factor systems, such as mobile devices and wearables.

Its integrated features and high-efficiency also make it ideal for applications that require high-efficiency, such as automotive and battery-powered applications. In these applications, the MAX15303ETL+T can provide power for multiple channels, with very low power losses, making it a great choice for automotive and low power applications.

Finally, because of its small size and high level of integration, the MAX15303ETL+T can also be used in a wide range of consumer electronics, such as cell phones, computers, and other portable devices. In these applications, the PMIC can provide multiple voltage rails with up to 3A of current, and help to reduce board size and cost.

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