• VDD From 4.5 V to 15 V, With Internal 5-V Regulator
• V_OUT From 0.7 V to 5.8 V
• Converts From 15V Input to 0.7V Output at 1MHz
• Dual-Output or 2-Phase Interleaved Operation, Stackable to 16 Phases
• Supports Pre-Biased Outputs Programmable Switching Frequency Up to 1 MHz/Phase
• 0.5% Internally Trimmed 0.7-V Reference
• 10-µA Shutdown Current
• Current Mode Control with Forced Current Sharing⁽¹⁾
• 1V to 40V 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
• Programmable Input Undervoltage Lockout
• Resistive or Inductor DCR Current Sensing
• Provide a 6-Bit Digitally-Controlled Output When Used With TPS40120
• 36-pin QFN Package
• APPLICATIONS
  • Graphic Cards
  • Internet Servers
  • Networking Equipment
  • Telecommunications Equipment
  • DC Power Distributed Systems

⁽¹⁾ Patents Pending

PowerPAD is a trademark of Texas Instruments.

The TPS40140 is a multifunctional synchronous buck controller that can be configured to provide either a single-output two-phase power supply or a power supply that supports two independent outputs. Several TPS40140 controllers can be stacked up to a 16-phase multiphase single output power supply. Alternatively, several controllers providing multiple independent outputs can be synchronized in an interleaving pattern for improved input ripple current.

The TPS40140 is capable of converting from a 15-V input to a 0.7-V output at 1MHz.

Each phase operates at a switching frequency of up to 1 MHz. The two phases in one device operate 180° out-of-phase. In a multiple device stackable configuration, the phase shift of the slaves, relative to a master, is programmable.