TPS54880EVM

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The TPS54880EVM evaluation board is an efficient and cost-effective platform for development and validation of DC/DC and AC/DC (off-line) switch mode power supply applications. This evaluation platform provides easy access to device features and enables versatile control through I2C interface and on-board potentiometer. The TPS54880EVM user’s guide, and associated design files, provide detailed information on hardware features known as the TPS54880.

The TPS54880EVM is capable of supplying up to 1 A of output current with high efficiency and excellent transient response, all in a tiny 3.5 mm × 5 mm QFN package. The board can be configured for any output voltage (up to 5 V) and includes an onboard DC supply (V IN ) from 1 V to 5.5 V as well as an AC adapter (V AC ) from 6 V to 12 V. The evaluation board also includes two regulator control pins (EN1, EN2) that can be used to control the load through either an external voltage higher than the V IN value or the PGOOD output signal.

The TPS54880EVM board has two loop-control architectures that are provided on the board: Voltage Mode Control, which is the default control architecture of the board, and Current Mode Control, which is available for switching performance enhancement and customization. The Mode Control pin is required to enable current mode control operation. The regulator loop is closed when the Mode Control pin is pulled up to VIN.

The board also features an I2C interface for communication with an external microcontroller or control system. This I2C bus is connected to the SCL and SDA pins of the TPS54880. An onboard filter capacitor provides ESD and transient protection for the I2C pins, and allows voltage-mode control signals to be sent from an external system.

In addition, the evaluation board includes an inductor and two output capacitors to enable the user to quickly assemble a power supply. The output voltage can also be adjusted via an onboard potentiometer, which can be used to manually adjust the voltage or for closed-loop or open-loop testing. The evaluation board also includes selectable connections to an external DAC for closed-loop testing and voltage control of the output voltage.

In summary, the TPS54880EVM evaluation board provides a cost-effective and versatile platform for developing and testing DC/DC and AC/DC switch mode power supply applications. With easy access to device features, the evaluation board allows the user to quickly and efficiently develop and validate the performance of the TPS54880. By utilizing the onboard potentiometer, I2C interface, and external DAC, the user can gain insight into the device’s performance and ensure the system’s operating requirements are met.

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