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Dual Phase, D-CAP+™Mode Step-Down Controller for IMVP6.5 CPU/GPU Vcore


Package | PIN: RHA | 40
Temp: S (-10 to 105)
Carrier: Cut Tape
Qty Price
1-9 $4.03
10-24 $3.62
25-99 $3.37
100-249 $2.96
250-499 $2.77
500-749 $2.36
750-999 $1.99
1000+ $1.90


  • Selectable Dual-or Single-Phase
  • Selectable CPU or GPU Mode
  • Minimum External Parts Count
  • Full IMVP-6.5 Feature Set, Including VR_TT and Output Current Monitor (IMON)
  • ±8 mV VCORE Accuracy Over Line/Load/Temp
  • 7-Bit DAC
  • Optimized Efficiency at Light and Heavy Loads
  • Patented Output Overshoot Reduction (OSR)
    Reduces Output Capacitance
  • Accurate, Adjustable Voltage Positioning
  • Selectable 200/300/400/500 kHz Frequency
  • Pat. Pending AutoBalance Phase Balancing
  • Selectable 8-Level Current Limit
  • 3-V to 28-V Conversion Voltage Range
  • Fast MOSFET Driver w/Integrated Boost Diode
  • Integrated Overvoltage Protection (OVP)
  • Small 6 × 6, 40-Pin QFN PowerPAD Package
    • IMVP-6.5 VCORE Applications for Adapter, Battery, NVDC or 3 V/5 V/12 V Rails

Texas Instruments  TPS51621RHAT

The TPS51621 is a selectable dual or single-phase, fully compliant IMVP-6.5 step down controller with integrated gate drivers. Advanced control features such as D-CAP+ architecture and OSR overshoot reduction provide fast transient response, and lowest output capacitance. The TPS51621 also supports single-phase operation for light loads. The full complement of IMVP-6.5 I/O is integrated into the TPS51621, including VR_TT, DPRSLPVR, PSI and output current monitoring (IMON). PSI is used to control the number of active phases. Transitioning into and out of dual-phase mode is exceptionally smooth.

Adjustable control of VCORE slew rate and voltage positioning round out the IMVP-6.5 features. In addition, the TPS51621 includes two high-current MOSFET gate drivers to drive high- and low-side N-channel MOSFETs with exceptionally high speed and low switching loss. The TPS51621 is packaged in a space saving, thermally enhanced 40-pin QFN and is rated to operate from -10°C to 105°C.