Product details


Vin (Min) (V) 4.5 Vin (Max) (V) 28 Vout (Min) (V) 0.5 Vout (Max) (V) 1.5 Iout (Max) (A) 60 Regulated outputs (#) 1 Number of Phases 2 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 1000 Iq (Typ) (mA) 0.5 Features Adjustable Current Limit, Dynamic Voltage Scaling, Enable, Light Load Efficiency, Phase Interleaving, Power Good, Pre-Bias Start-Up, Remote Sense, SVID, Synchronous Rectification Duty cycle (Max) (%) 30 Operating temperature range (C) -40 to 105 Type Controller Rating Catalog Control mode D-CAP+ open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

VQFN (RSM) 32 16 mm² 4 x 4 open-in-new Find other Buck controllers (external switch)

Special Note

For a detailed datasheet and other design support tools please contact


The TPS51623 device is a driverless, fully SVID compliant, VR12.1 step-down controller. Advanced control features such as D-CAP+ architecture with overlapping pulse support undershoot reduction (USR) and overshoot reduction (OSR) provide fast transient response, lowest output capacitance and high efficiency. The TPS51623 device also supports single-phase operation in CCM or DCM for light-load efficiency. The TPS51623 device integrates the full complement of VR12.1 I/O features including VR_READY (PGOOD), ALERT and VR_HOT. The SVID interface address allows programming from 0 to 7. Adjustable control of VOUT slew rate and voltage positioning round out the VR12.1 features.

Paired with the TPS51604 FET gate driver, the solution delivers exceptionally high speed and low switching loss. The TPS51623 device works with selected TI power stage products for optimum efficiency as well as DrMOS products. The TPS51623 device operates with a default boot voltage of 1 V. Applications can override the default boot voltage by including an external resistor divider in the design.

The TPS51623 device package is a space saving, thermally enhanced 32-pin VQFN package that operates from –40°C to 105°C.


  • VR12.1 Serial VID (SVID) Compliant
  • 1- or 2-Phase Operation
  • Supports Only Zero Load Line Applications
  • 8-Bit DAC Output Range: 0.25 V to 1.52 V
  • Optimized Efficiency at Light and Heavy Loads
  • 8 Independent Levels of Overshoot Reduction (OSR) and Undershoot Reduction (USR)
  • Driverless Configuration for Efficient High-Frequency Switching
  • Supports Discrete, Power Block, Power Stage or DrMOS MOSFET Implementations
  • Accurate, Adjustable Voltage Positioning
  • 300-kHz to 1-MHz Frequency Selections
  • Patented AutoBalance Phase Balancing
  • Selectable 8-level Current Limit
  • 4.5-V to 28-V Conversion Voltage Range
  • Small, 4 mm × 4 mm, 32-Pin, VQFN PowerPad Package

Technical documentation

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* Datasheet 2-Phase, D-CAP(tm)M Step-Down Controller for VR12.1 Vcpu datasheet Dec. 06, 2013
Technical articles How to create a power supply for Intel’s Braswell processor Aug. 10, 2015

Design & development

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Reference designs

High Power Density 9V-15V input Intel® Pentium™ N3700 VCC0+VCC1 design for Industrial PC
TIDA-00572 The TI TPS1623 VR12.1 reference design, supporting Intel® Pentium™ N3700 , uses TI's driverless PWM architecture with TI power stages for high power density, high efficiency, and low component count  while meeting Intel voltage tolerance requirements with low ripple, tight loadline (...)
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VQFN (RSM) 32 View options

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