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DATA SHEET
TPS546C20A 4.5-V to 18-V, 35-A 2× Stackable Synchronous Buck Converters With PMBus Supporting Telemetry
1 Features
- 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
2 Applications
- Test and Instrumentation
- Ethernet Switches, Optical Switches, Routers, Base Stations
- Servers
- Enterprise Storage SSD
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