The TPS546C23 devices are PMBus 1.3 Compliant, non-isolated DC-DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 5-mm × 7-mm package. Two TPS546C23 devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. 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 functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.
● 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
● 5 mm × 7 mm LQFN Package
● Single Thermal Pad
● 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
● 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
● Frequency Synchronization to an External Clock or Output Clock to Sync Out
