The TPS544x25 devices are PMBus 1.2 Compliant, non-isolated DC-DC converters with integrated FETs, capable of high-frequency operation and 20-A or 30-A current output from a 5 mm × 7 mm package. 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.
PMBus 1.2 Compliant Converters: 20 A and 30 A
Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.5 V to 5.5 V
5 mm × 7 mm LQFN Package
Single Thermal Pad
Integrated 5.5-mΩ and 2.0-mΩ Stacked NexFET Power Stage
500-mV to 1500-mV Reference for Adapative Voltage Scaling (AVS) and Margining through PMBus
0.5% Reference Accuracy at 600 mV and Above
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
VOUT_COMMAND and AVS VOUT Transition Rate
Overcurrent Protection with Thermal Compensation
UVLO, Soft-Start and Soft-Stop
PGOOD, OV, UV, OT Levels
Fault Responses
Turn-On and Turn-Off Delays
Thermal Shutdown
Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
