The TPS544B25RVFT is a SWIFT™ synchronous Buck Converter with PMBus™ and frequency synchronization. The PMBus 1.2 compliant non-isolated DC-to-DC converter has integrated FETs, capable of high-frequency operation and 20 or 30A current output. High-frequency, low-loss switching, provided by an integrated NexFET™ power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current and an optional external temperature. Response to fault conditions can be set to either restart, latch-OFF or ignore depending on system requirements.
● Single thermal pad
● Integrated 5.5 and 2mR stacked NexFET™ power stage
● Lossless low-side MOSFET current sensing
● Voltage mode control with input feed-forward
● Differential remote sensing
● Monotonic start-up into pre-biased output
● Output voltage and output current reporting
● External temperature monitoring with 2N3904 transistor
● Programmable via the PMBus interface - Overcurrent protection with thermal compensation
● UVLO, soft-start and soft-stop
● PGOOD, OV, UV and OT levels
● Fault responses
● Turn-ON and turn-OFF delays
● Thermal shutdown
● Frequency synchronization to an external clock
● 500 to 1500mV Reference for adaptive voltage scaling (AVS) and margining through PMBus
● 0.5% Reference accuracy at 600mV and above
