TPS65090EVM

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TPS65090EVM Application Field and Working Principle

The TPS65090EVM evaluation module, from Texas Instruments, is designed to increase proficiency and speed design while implementing the TPS65090 high-voltage, low-RDS(on) synchronous-rectified buck regulator. This module provides a platform for testing power requirements in evaluation and demonstration boards and kits.

Applications

This highly recommended module is suitable for applications such as point-of-load regulation, DC/DC conversion, and LED driver supplying up to 1.5A current. It provides resettable polyfuses to protect sensitive components from short-to-ground conditions. Users can also evaluate the TPS65090/91 when in a microprocessor-based system with adjustable adjustment jumps from 0 to 11V on VIN.

Features

The TPS65090EVM offers a variety of features that make it an ideal choice for power supply design. Among those features include a wide voltage range from 0 to 6.0V and an independent LDO output with an adjustable voltage range from 0 to 3.3V. The module also has a programmable timer for soft start that limits inrush current. It includes a custom oscillator that allows users to select the frequency up to 1MHz and enables low noise and low distortion.

Benefits

The combined features of this module provide several benefits for design and demonstration implementations. These include fast system start-up, wide operating voltage and current, low noise adjustable output voltage, optimized external components, and efficient power consumption. Furthermore, the module is RoHS and WEEE compliant, so it meets industry standards and environmental regulations.

Working Principle

The TPS65090EVM follows a three-stage approach to providing efficient and low noise power output. First, the module employs a DC input voltage range of 4.5V-6V. This voltage is then regulated by a current-mode switching converter, with a typical switching frequency of 1MHz. This converter provides an adjustable output voltage of 0-6V. The output voltage is then set by a feedback loop with an error amplifier, which variously controls the current to the switching converter. Finally, the output is stabilized by a low dropout (LDO) linear regulator with an adjustable output voltage range of 0-3.3V.

Conclusion

The TPS65090EVM evaluation module is a great choice for those looking for a versatile and efficient power solution in evaluation and demonstration boards and kits. This module features low noise adjustable output voltage, optimized external components, fast system start-up, wide operating voltage and current, and efficient power consumption. It is also RoHS and WEEE compliant. All of these features make the TPS65090EVM ideal for powering low-voltage requirements such as point-of-load regulation, DC/DC conversion, and LED driver.

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