TPS5405EVM

Series:	--
Part Status:	Active
Main Purpose:	DC/DC, Step Down
Outputs and Type:	1, Non-Isolated
Voltage - Output:	5V
Current - Output:	1.5A
Voltage - Input:	6.5 V ~ 28 V
Regulator Topology:	Buck
Frequency - Switching:	--
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	TPS5405

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TPS5405EVM Application Field and Working Principle
The TPS5405EVM is an evaluation board developed by Texas Instruments for AC/DC offline switches operating with an input voltage in the range of 85-265VAC and output voltage up to 6V. The TPS5405EVM can provide high performance solutions for DC/DC and AC/DC design needs, making it a great choice for a variety of demanding applications including telecommunications, automotive, and industrial systems.The TPS5405EVM board consists of an evaluation system layout with the TPS5405 power management IC, an integrated wide Vin Buck Regulator with integrated power FET, plus digital control and diagnostics functions. The integrated FETs are designed to operate with an external power supply up to 85-265VAC, with no external device required for start-up. Application
The TPS5405EVM works best in circuits to provide compact, reliable, and efficient DC/DC and AC/DC conversion. Its integrated FETs enable high-voltage AC/DC operating over a wide range, making it a great choice for many different applications, such as industrial automation systems, audio-video equipment, and telecommunications systems. The TPS5405EVM can also be used as a standalone offline regulator in non-isolated DC/DC applications.Working Principle
The TPS5405EVM utilizes the closed-loop control principle for efficient and reliable DC/DC and AC/DC power conversion. The integrated FETs and digital control system provide a PWM switching system to regulate voltage accurately over a wide input supply. The FETs operate with a near-zero voltage across them at steady state, allowing the output voltage to maintain its value in spite of any input voltage ripple. The onboard digital control system allows for complex timing, overvoltage, undervoltage, and short-circuit protection features.The TPS5405EVM board is equipped with a variety of components to ensure circuit protection and improve reliability. It utilizes an external ceramic capacitor configured in a low-value RC snubber circuit for improved transient immunity and input voltage protection. The board also includes integrated protection circuitry including a thermal fuse, in-rush current limiter, and soft start circuit. The configuration of these components ensures excellent protection in the event of a fault condition. Conclusion
The TPS5405EVM is an extremely versatile evaluation board designed for high performance DC/DC and AC/DC conversion solutions. It utilizes an integrated power FET to provide a wide range of input voltage supply, with no external device required for start-up. The board also features digital control and protection functions for improved reliability and circuit protection. The TPS5405EVM is a great choice for a variety of demanding applications requiring efficient and reliable power conversion.

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