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

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).

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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