The TPS54425EVM-608 is an evaluation module for TPS54425 4.5V to 18V Input, 4A Synchronous Step Down Converter. The TPS54425 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, or ceramic types and features fast transient response with no external compensation. The switching frequency is internally set at a nominal 700KHz. The high side and low side switching MOSFETs are incorporated inside the TPS54425 package along with the gate drive circuitry. The low drain to source on resistance of the MOSFETs allow the TPS54425 to achieve high efficiencies and helps keep the junction temperature low at high output currents. The TPS54425 dc/dc synchronous converter is designed to provide up to a 4A output from an input voltage source of 4.5V to 18V. The output voltage range is from 0.76V to 5.5V.
- DCAP2 mode enables fast transient response
- Low output ripple and allows ceramic output capacitor
- Wide VCC input voltage range 4.5V to 18V
- Wide VIN input voltage range from 2V to 18V
- Output voltage range from 0.76V to 5.5V
- Highly efficient integrated FETs optimised for lower duty cycle applications
- High efficiency, less than 10uA at shutdown
- High initial bandgap reference accuracy
- 700KHz switching frequency
- Pre biased soft start
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