TPS61000EVM-156

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The TPS61000EVM-156 evaluation module is an off-line DC/DC and AC/DC switched-mode power supply (SMPS). It is designed to provide engineers and technicians with a test platform for evaluating the performance of an off-line SMPS. This evaluation module provides a comprehensive solution for testing and validating the proper operation of a variety of different switching power supplies.

Application Field

The TPS61000EVM-156 is designed to provide a test platform for evaluating the performance of an off-line DC/DC and AC/DC SMPS. This evaluation module is used for testing a variety of different switching power supplies including linear, switched-mode, and other non-linear devices. Additionally, this evaluation module can be used to test a variety of different topologies such as flyback, forward, push-pull, and buck-boost. This evaluation module is also useful for evaluating the performance of various DC/DC and AC/DC SMPS in both active and idle states.

Working Principle

The TPS61000EVM-156 evaluation module utilizes a switching power supply topology to generate regulated dc voltages from an ac line input. An internal oscillator (a.k.a., clock oscillator) is responsible for initiating the switching of the power MOSFETs which convert the ac line input into a pulsed dc output. The oscillator frequency is adjustable from approximately 100 kHz to 500 kHz. Control of the output voltage is achieved with a pair of analog voltage dividers and a pair of digital potentiometers. The analog voltage dividers provide voltage feedback from the output to the pulse-width-modulated controller. The digital potentiometers adjust the pulse-width-modulated reference voltage to regulate the dc output voltage.

In addition to voltage control, the TPS61000EVM-156 evaluation module utilizes a soft-start feature which ramps up the output voltage to a predefined level over a predetermined time period. This feature helps reduce the initial inrush current available from the ac line input. The TPS61000EVm-156 also provides a protection feature which disables the MOSFETs and generates a fault signal when the output current exceeds a predetermined level. This feature provides additional protection for the components on the evaluation module and helps to reduce the likelihood of catastrophic failure.

Conclusion

The TPS61000EVM-156 evaluation module is an off-line DC/DC and AC/DC SMPS designed to provide engineers and technicians with a test platform for evaluating the performance of an off-line SMPS. This evaluation module utilizes a switching power supply topology to generate regulated dc voltages from an ac line input. It also features soft-start and overload protection. This evaluation module is useful for testing and validating the proper operation of a variety of different switching power supplies.

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