Texas Instruments TPS544x25 SWIFT™同步降壓轉換器

Texas Instruments TPS544x25 SWIFT™ Synchronous Buck Converters are PMBus 1.2 Compliant, non-isolated DC-DC converters with integrated FETs. They are capable of high-frequency operation and 20A 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. It also enables key parameters monitoring which includes 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.

特點

20A and 30A PMBus 1.2 compliant converters
4.5V to 18V input voltage range
0.5V to 5.5V output voltage range
5mm × 7mm LQFN package
Single thermal pad
Integrated 5.5mΩ and 2.0mΩ stacked NexFET power stage
500mV to 1500mV reference for Adaptive Voltage Scaling (AVS) and margining through PMBus
0.5% reference accuracy at 600mV 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
200kHz to 1MHz pin strapping for switching frequency
Frequency synchronization to an external clock
Footprint compatible 20A, 30A converters