Texas Instruments' 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 x 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.
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- 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 x 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
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- 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, and 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
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Texas Instruments' 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 x 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.
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