TPS563900DAP

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Texas Instruments’ TPS563900DAP is a dual-step synchronous DC-DC buck converter suitable for powering a wide range of applications with 5V, 3.3V, 2.5V, 1.8V, and 1.2V outputs.

Application Field

TPS563900DAP is a high efficiency, high performance dual-step synchronous DC-DC buck converter (SWIFT) with a wide input voltage range. It uniquely combines two synchronized Synchronous Buck Converters and a Self-Commissioned DC Controller in a single device. It is ideal for server, telecom and industrial-grade applications requiring long hold-up times and improved efficiency over traditional dc/dc power solutions. Specifically, the application fields of TPS563900DAP include:

• Processors
• Servers and Storage
• High-End Enterprise Applications
• Telecommunications
• Enterprise Storage
• Industrial Process Control

Working Principle

The TPS563900DAP dual-step buck converter integrates two synchronous buck DC-DC converters in one device. It is rated for an input voltage range of either 5V or 12V, and provides 5V, 3.3V, 2.5V, 1.8V, and 1.2V outputs. The two discrete dc converters steps the input voltage down to their respective outputs and share the same input supply. The two step sizes can be programmed from 0.90 to 1.0 with a 4.7K external resistor between two pins of the device.

The TPS563900DAP supports self-commissioning using a built-in intelligent DC controller. It performs automatic pre-charge and self-regulation for each DC converter, thus allowing for minimum output voltage variation in the presence of varying load currents. Additionally, the controller monitors and screens output voltage during each cycle, removing the need for operator intervention or programming.

The TPS563900DAP also features a PAT-Soft® current limit (Ramp and Scaling) that smoothly ramps up the current demand of the DC converter until its action point is reached. The PAT-Soft® current limiting feature helps reduce stress on the output voltage, reduces noise, protects against short circuit conditions and helps increase the overall system efficiency.

The TPS563900DAP also features integrated internal thermal protection and over-voltage protection, along with a shut-down pin that can be used to force the device into shut-down mode. Additionally, the device supports both active-low and active-high output enable modes.

Overall, the TPS563900DAP is an efficient, reliable, and cost-effective power solution for a wide range of applications that require either 5V or 12V inputs and multiple outputs. It features a compact, low-profile package and is qualified for industrial temperature operation.

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