Packaging information
| Package | Pins LQFN-CLIP (RVF) | 40 |
| Operating temperature range (°C) -40 to 125 |
| Package qty | Carrier 250 | SMALL T&R |
Features for the TPS546C20A
- 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
- 2 PMBus Addresses (Master 36d/Slave 37d)
- Selectable Boot-up Vout and Soft Start Values via Pin-Strapping
- 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 TPS546C20A With the WEBENCH® Power Designer
Description for the TPS546C20A
The TPS546C20A 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 7-mm × 5-mm package. Two TPS546C20A 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.