TPS79501DRBEVM

Series:	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Channels per IC:	1 - Single
Moisture Sensitivity Level (MSL):	--
Voltage - Output:	1.8V, 2.5V, 2.8V, 3.3V
Current - Output:	500mA
Voltage - Input:	2.7 V ~ 5.5 V
Regulator Type:	Positive Adjustable
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	TPS79501

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TPS79501DRBEVM Application Field and Working Principle

The TPS79501DRBEVM is an evaluation board for the TPS79501 low-dropout linear regulator. This evaluation board is designed to deliver output currents of up to 8A with efficiency better than 90%. The typical dropout voltage is less than 60mV, and the TPS79501DRBEVM can also provide precise regulation up to 2.25V.

Overview of the TPS79501DRBEVM Evaluation Board

The TPS79501DRBEVM is a 6.75 x 4.5” compact evaluation board. It contains a TPS79501 low-dropout regulator in a QFN-16 package in addition to a radiative safety controller IC, a ruggedized FET, and several support components. The output voltage is adjustable between 0.6V and 2.25V.The TPS79501DRBEVM evaluation board has a full-performmance synchronizable buck converter with a 400kHz switching frequency. It offers on-board voltage output regulation with no opto-coupler and error amplifier or compensation components. The combination of the high efficiency and the wide input voltage range, together with the on-board synchronizable buck converter, makes the TPS79501DRBEVM an essential evaluation board for power supplies driving DSPs, microprocessors, analog circuits, and systems in general.

Features and Benefits of the TPS79501DRBEVM

The TPS79501DRBEVM evaluation board offers a wide input voltage range of 3.6V – 16V. This makes it suitable for both automotive and wide input power supply systems. The board is also able to deliver eight-amps of output current with a dropout voltage of typically 60mV.Another great feature of the TPS79501DRBEVM board is its ability to synchronize with an external input clock up to 400kHz. This feature offers a simpler design, smaller board size, and reduction of part count.The board also features a robust pre-bias startup circuit that allows for easy power-up sequencing. This circuit protects the FET from high-current spikes caused by the output capacitors as the system starts up. The TPS79501DRBEVM board is also protected against temperature and current overloads, and it provides safe start-up and shutdown with its wide compensations range.

Working Principle of the TPS79501DRBEVM

The TPS79501DRBEVM evaluation board works according to a linear voltage regulator topology. This means that it uses an error amplifier, a reference voltage, a power switch, and an output voltage feedback loop to maintain a stable output voltage.The error amplifier compares the reference voltage with the output voltage. If the output voltage is lower than the reference voltage, the error amplifier will drive a logic signal into the control port of the power switch, triggering it to turn on. This will cause an increase in the output voltage.Similarly, if the output voltage is higher than the reference voltage, the error amplifier will drive a logic signal into the control port of the power switch, causing it to turn off. This will cause a decrease in the output voltage.The error amplifier, reference voltage, and power switch form a feedback loop, which will help to regulate and stabilize the output voltage.

Conclusion

In conclusion, the TPS79501DRBEVM evaluation board is a versatile, compact, and highly efficient way to deliver up to 8A of current with precise voltage regulation up to 2.25V. This board is suitable for a variety of automotive and industrial applications that require precise voltage regulation and high efficiency. Its wide input voltage range and robust pre-bias startup circuit ensure the board is easy to set up and reliable in operation.

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