The TPS546C23EVM1-746 devices are PMBus 1.3 Compliant, non-isolated DC/DCconverters with integrated FETs, capable of high-frequency operation and 35-A current output from a7-mm × 5-mm package. Two TPS546C23EVM1-746 devices can be paralleled together to provideup to 70-A load. Current sensing is realized by sampling a small portion of the power stage currentand independent on the device temperature. High-frequency, low-loss switching, provided by anintegrated NexFET power stage and optimized drivers, allows for very high-density power solutions.The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converterconfiguration, as well as key parameters monitoring including output voltage, current, and internaldie temperature. Response to fault conditions can be set to either restart, latch-off or ignoredepending on system requirements.
Feature
- PMBus 1.3 Compliant Converters: 35 A
- 2-Device Stackable for up to 70 A With Current Sharing
- Input Voltage Range: 4.5 V to 18 V
- Output Voltage Range: 0.35 V to 5.5 V
- Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET Power Stage
- 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function 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
- Internal Die Temperature Monitoring
- 64 Programmable PMBus Addresses via ADDR0 and ADDR1 Pins
- Programmable via the PMBus Interface:
- OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault Responses
- Turnon and Turnoff Delays
- Thermal Shutdown
- Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
- Frequency Synchronization to an External Clock or Output Clock to Sync Out
- Create a Custom Design Using the TPS546C23 With the WEBENCH Power Designer
