TPS62745EVM-622

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The TPS62745EVM-622 is an evaluation board from Texas Instruments, developed to demonstrate the capabilities of the TPS62745, an integrated 600mA, ultralow quiescent current, basic switching regulator. The device is designed for both battery-powered applications and higher voltage sources. The TPS62745EVM-622 can be used to evaluate general AC/DC and DC/DC off-line switching power supplies.

The TPS62745 is an ideal solution for single cell Li-ion battery powered applications, given its ultra low quiescent current of 1.3µA. This device operates with an input voltage of 2.6V to 7V and provides outputs of 0.8V to 5.5V, with up to 600mA of output current. The device integrates the VCC and EN input pins for enable and disable functions, as well as a power-good indication. It also incorporates two trim pins for scale factor and compensation adjustments. The EVM features on-board thermal protection, as well as an adjustable soft-start, with a ramp rate of up to 100mV/ms.

The TPS62745EVM-622 is a comprehensive evaluation board, designed to facilitate the evaluation of the TPS62745 device. The board features two input voltage test points, one at 7V and another at 2.6V, plus a variable output voltage test point, allowing the testing of a wide range of output voltages and up to 600mA output currents. The test points are buffered to minimize noise and power dissipation. A power switch is included to control the start-up sequence of the output voltage. The EVM also features a step-down differential and a synchronous rectifier, with integrated power MOSFETs and parasitic diode for efficient switching.

The TPS62745EVM-622 is a useful tool for evaluating off-line switching power supplies, such as DC/DC converters and AC/DC adapters. The board is easy to set up and configure, making it a great tool for power supply developers and designers. It is also ideal for laboratory experiments involving the evaluation of current mode control topologies and the testing of various power supply configurations.

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