TPS7A1901EVM-760

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TPS7A1901EVM-760 is an evaluation board from Texas Instruments used for testing the linear voltage regulators. It is a single output, low quiescent current voltage regulator with a fixed output voltage of 3.3V/2.5V/1.8V, maximum output current of 125mA, and operating temperature range between -40°C to 125°C.

Functionally, the board incorporates an adjustable current limit, fast current attacks to allow low-noise operation, Enable and Reset input signals and output voltage accuracy of ±3% (±2.0mV). Built-in overtemperature protection (OTP) and overvoltage protection (OVP) reduce the risk of short-circuiting or overvoltage conditions. The board also provides a voltage supply for the on-board indicator LED and a 7-segment display, making it convenient for visualizing the output voltage setting.

The board is designed for easy evaluation and setup. The user can either use the on-board jumper settings to adjust the output voltage and set additional control parameters, or use the external control pins to adjust the output voltage and program various functions. The board can also be used as a single-output voltage regulator in a variety of applications, such as automotive, industrial, LED lighting, medical, telecom and consumer markets.

This application field of TPS7A1901EVM-760 also contains motor control, AC-DC converters, DC-DC converters, amplifiers, switching power supplies, SMPS, AC appliances, DC appliances and many other circuits.

The working principle of the board is relatively simple. It consists of a voltage reference, an op-amp, an initialization circuit, and a feedback circuit.The voltage reference is a circuit that produces a constant voltage, which is used to compare with the output voltage. The output voltage is then adjusted to the desired level by the feedback circuit.The initialization circuit ensures that the output voltage is set at its desired level upon startup.

The op-amp amplifies the difference between the desired and actual voltages and applies the amplified difference signal to the control circuit,which adjusts the output voltage accordingly. The feedback circuit then acts as an error amplifier to strengthen the voltage control loop. The entire process is completed by the iteration of the voltage comparison and adjustment.

TPS7A1901EVM-760 is a reliable evaluation board with minimal user setup and extensive protection circuitry. It can be used in a variety of applications to evaluate and program linear voltage regulators. It is a cost-effective and easy-to-use solution for evaluating and programming various linear voltage regulators.

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