TPS51916EVM-746

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The TPS51916EVM-746 evaluation module is a low power product aimed at mobile applications requiring peak efficiency and minimal component count such as adapter applications. The module is based on the TPS51916 controller IC, which is optimized to deliver excellent regulation performance and low ripple noise.

The board provides the following features including:

• Voltage mode control
• Integrated high-side MOSFET
• Integrated low-side MOSFET
• Zero voltage switching
• Over voltage protection
• Under voltage protection
• Over current protection
• Over temperature protection

The board is designed to operate as a single port synchronous buck DC-DC converter with an output voltage of 3.3V and up to 4A of output current from a 6V to 14V input voltage range. The controller IC is pre-programmed to provide constant voltage and current modes with a cycle-by-cycle current limit of 6.5A. The board is optimized for use in applications such as adapter applications requiring high efficiency, excellent dynamic response, and low ripple and noise.

The synchronous buck design of the board features full-bridge and synchronous rectification. The board uses two integrated low side internal MOSFETs and one external high side MOSFET connected in a traditional synchronous buck configuration. The high side MOSFET is connected in series with the output voltage to the current sense resistor, which is used to measure the output current. The TPS51916 controller IC is then used to control the PWM signal to the high side and low side MOSFETs and regulate the output voltage.

The main difference between the synchronous buck design and other buck design is that the synchronous buck operates at a higher frequency than the other buck designs. This higher frequency reduces the losses due to the internal resistance of the MOSFETs, resulting in higher efficiency. It also reduces the size of inductors and capacitors. Additionally, synchronous buck designs also reduce the output ripple voltage.

The TPS51916EVM-746 board is best suited for applications requiring low power, such as adapters. The evaluation module is designed to minimize the component count, reduce solution size, and provide excellent regulation performance and low ripple noise to meet the demanding requirements of today\'s mobile applications.

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