Power Electronics
These highly integrated converters feature 05 percent referencevoltage accuracy and full differential remotevoltage sensing to meet the voltage requirements of deep submicron processors Image courtesy of Texas Instruments
<p>These highly integrated converters feature 0.5 percent reference-voltage accuracy and full differential remote-voltage sensing to meet the voltage requirements of deep sub-micron processors. (Image courtesy of Texas Instruments).</p>

DC/DC Buck Converters Support Adaptive Voltage Scaling for Improved Efficiency

Texas Instruments (TI) has introduced 20-A and 30-A synchronous DC/DC buck converters with frequency synchronization for low-noise and reduced EMI/EMC and a PMBus interface for adaptive voltage scaling (AVS).

TI's SWIFT 20A TPS544B25 and 30-A TPS544C25 converters integrate MOSFETs and feature small PowerStack QFN packages to drive ASICs in space-constrained and power-dense applications in various markets, including wired and wireless communications, enterprise and cloud computing, and data storage systems. Used in conjunction with TI's award-winning WEBENCH online design tools, the converters simplify power conversion and speed the power supply design process.

The highly integrated converters feature 0.5 percent reference-voltage accuracy and full differential remote-voltage sensing to meet the voltage requirements of deep sub-micron processors. Frequency synchronization to an external clock eliminates beat noise and reduces EMI. Additionally, the TPS544B25 and TPS544C25 offer pin-strapping that enables the devices to start up without PMBus commands to an output voltage set by a single resistor. Programmability, real-time monitoring of the output voltage, current and external temperature, and fault reporting via PMBus simplify power-supply design, increase reliability, and reduce component count and system cost. 

For applications such as enterprise Ethernet switches, TI also offers the UCD90240 24-rail PMBus power sequencer and power manager. Together, the TPS544C25 and UCD90240 provide a complete PMBus point-of-load (POL) and sequencing solution. Download the Complete PMBus Power System for Enterprise Ethernet Switches TI Designs reference design.

TPS544B25 and TPS544C25 key features and benefits:

  • Integrated power MOSFETs support 20A and 30A of continuous output current.
  • On-chip PMBus interface and non-volatile memory simplify power-supply design and enable customization. 
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