Description:

The TPS548B28 device is a high-efficiency, small-size synchronous step-down converter with an adaptive on-time D-CAP3™ control mode. The device requires no external compensation, making it easy to use with minimal external components. It is ideally suited for space-constrained data center applications. The TPS548B28 features differential remote sensing and high-performance integrated MOSFETs, with a precision (±1%) 0.6V voltage reference across the entire operating junction temperature range. The device offers fast load transient response, accurate load and line regulation, skip mode or FCCM operation, and programmable soft-start. The TPS548B28 is a lead-free device and is fully RoHS compliant without exemption.

Features:

• 4V to 16V input range, up to 20A output current, no external bias

• 2.7V to 16V input range, up to 20A output current, with external bias of 3.13V to 3.6V

• Output voltage range: 0.6V to 5.5V

• Integrated 7.7mΩ and 2.4mΩ MOSFETs supporting 20A continuous output current

• Ultra-fast load step response with D-CAP3™ control mode

• Supports all ceramic output capacitors

• Differential remote sensing with VREF of 0.6V ±1% over –40°C to +125°C junction temperature range

• Selectable FCCM or auto-skip Eco-mode™ for high light-load efficiency

• Programmable current limit via RTRIP

• Pin-selectable switching frequency: 600kHz, 800kHz, 1MHz

• Differential remote sensing for high output accuracy

• Programmable soft-start time

• External reference input for tracking

• Pre-biased startup capability

• Open-drain power-good output

• Hiccup mode on OC and UV faults; latch-off mode on OV fault

• 4mm × 3mm 21-pin QFN package

• Pin-compatible with 15A TPS548A28

• Fully RoHS compliant without exemption

Applications:

• Rack servers and blade servers

• Hardware accelerators and plug-in cards

• Data center switches

• Industrial PCs