The TPS40140 and TPS40180 are synchronous Current Mode Buck DC/DC controllers. They are highly flexible, permitting multi-parallel operation for heavy-current applications and generation of multiple output voltages in multi-rail systems.
The input voltage range is between 2 V and 40 V. The IC design permits voltage conversion from the 12 V bus to processor voltages below 1 V, even at a switching frequency of 1 MHz per phase. Current is optionally measured by means of a measuring resistor or losslessly by way of the parasitic DC resistance of the storage choke. In shutdown mode, current consumption is just 10 μA.

TPS40140

Key Features

• VDD From 4.5 V to 15 V, With Internal 5-V Regulator
• VOUT From 0.7 V to 5.8 V
• Converts From 15-V Input to 0.7-V Output at 1 MHz
• Dual-Output or 2-Phase Interleaved Operation, Stackable to 16 Phases
• 1 V to 40 V Power Stage Operation Range
• Power Sharing from Different Input Voltage Rails (e.g. Master From 5 V, slave From 12 V)
• True Remote Sensing Differential Amplifier
• Provide a 6-Bit Digitally-Controlled Output when Used With TPS40120
• 36-pin QFN Package

Applications

• DC Power Distributed Systems
• Graphic Cards
• Internet Servers
• Networking Equipment
• Telecommunications Equipment

Please note that there is an Evaluation Board available - read more on the Webpage 'Texas Instruments Stackable Evaluation Module' below!

Related Links

Webpage Texas Instruments TPS40140
Datasheet Texas Instruments TPS40140 (PDF 1,060 kB)
Webpage Texas Instruments Stackable Evaluation Module

TPS40180

Key Features

• Stackable to 8 Phases, Multiple Controllers Can Occupy Any Phase
• 2-V to 40-V Power Stage Operation Range
• eTrim™ in System Reference Voltage Trim to Tighten Overall Output Voltage Tolerance, Reference is Better Than 0.75% Un-Trimmed
• VDD From 4.5 V to 15 V, With Internal 5-V Regulator
• Supports Output Voltage From 0.7 V to 5.8 V
• Supports Pre-Biased Outputs
  10-µA Shutdown Current
• Programmable Switching Frequency up to 1-MHz per Phase
   

Applications

Related Links

Webpage Texas Instruments TPS40180
Datasheet Texas Instruments TPS40180 (PDF 1,416 kB)
Users Guide UTPS40180EVM, A 20A Stackable Single Phase Synchronous Buck Converter (PDF 710 kB)