TPS61253AEVM-803

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The TPS61253AEVM-803 is an evaluation module (EVM) for the TPS61253 buck converter, a compact, highly efficient, switch-mode, DC-DC converter. It is designed to enable the testing and evaluation of design and performance characteristics of the TPS61253 device. This EVM is suitable for a wide range of applications, including portable, metering, and monitoring systems. This EVM operates as a regulated, constant-current-mode (CCM) buck converter operating over a wide input voltage range of 3 V to 24 V and providing a constant voltage output of 3.3 V. It employs cylindrical integrated EMI filter-capacitors technology to provide cost effective performance with minimum component count.

The TPS61253AEVM-803 Evaluation Board is ideally suited for applications including:

• Point-of-load (POL) and low power conditioning supplies in battery powered, communication, and automotive systems.
• Standby circuitry, battery charging, and voltage regulation in metering, instrumentation, data acquisition systems.
• Standby power conversion circuits in embedded controllers.
• Power supplies for loads that require a wide input voltage range.

The TPS61253AEVM-803 comes with an efficiency meter card (EMC) and an external USB/UART interface. This EVM allows designers to evaluate the performance of the TPS61253 device through simple commands from the USB/UART interface. The EMC provides the necessary connections for the efficient measurement of power consumed by the TPS61253 device in a system.

The TPS61253AEVM-803 is designed to output a constant voltage over the specified input voltage and output current ranges. It supports buck topology with an input voltage range of 3 V to 24 V, providing an adjustable output voltage range of 1.5 V to 4.6 V. This EVM is designed to be an easy to use demonstration and evaluation board. It is equipped with various control switches, current and voltage setting resistors, and other signal capture circuitry. This board also includes various output short circuit protection and output over-current protection, along with numerous other features. Its comprehensive feature set makes it an ideal design evaluation tool for the TPS61253 device.

The TPS61253AEVM-803 works by sampling the input voltage, using current sense amplifiers and a voltage error amplifier to control the voltage across the feedback resistor. The switching of the power device is timed by a fixed frequency oscillator, which regulates the output voltage by turning on the power switch when the voltage exceeds the set value, and turning off the power switch when the voltage is below the set value. The switching frequency of this EVM is adjustable from 100 kHz to 3 MHz.

By using this EVM, designers can easily build a buck converter using the TPS61253 device. This board includes all of the necessary evaluation components for immediate use. It provides a cost-effective and convenient way to quickly evaluate the performance of the device and its feature set.

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