TPS54225EVM-538

TEXAS INSTRUMENTS  TPS54225EVM-538.  评估板, TPS54225 1.05V, 2A DCAP2 同步降压控制器

The is an evaluation module for TPS54225 Synchronous Step Down DCAP2 mode converter. The evaluation module is a single synchronous buck converter providing 1.05V at 2A from 5V to 17V input. The TPS54225 is a single, adaptive on time DCAP2 mode synchronous buck converter requiring a very low external component count. The DCAP2 control circuit is optimised for low ESR output capacitors such as POSCAP, SP CAP. The switching frequency is internally set at a nominal 700KHz. The high side and low side switching MOSFETs are incorporated inside the TPS54225 package along with the gate drive circuitry. The low drain to source on resistance of the MOSFETs allow the TPS54225 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The output voltage range is from 0.76V to 5.5V.

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DCAP2 mode enables fast transient response

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Low output ripple and allows ceramic output capacitor

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Wide VIN input voltage range 2V to 18V

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Output voltage range 0.76V to 5.5V

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Highly efficient integrated FET"s optimised for lower duty cycle applications

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High efficiency, less than 10µA at shutdown

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High initial bandgap reference accuracy

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Adjustable soft start

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Pre biased soft start

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700KHz switching frequency fSW