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TPS51621
  • TPS51621

TPS51621

ACTIVE

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

Texas Instruments TPS51621 Product Info

1 April 2026 0

Parameters

Rating

Catalog

Topology

Multiphase

Iout (max) (A)

60

Vin (max) (V)

28

Vin (min) (V)

3

Vout (max) (V)

1.5

Vout (min) (V)

0.3

Control mode

D-CAP+

Features

Power good

Duty cycle (max) (%)

50

Iq (typ) (A)

0.0023

Number of phases

2

Operating temperature range (°C)

-10 to 105

Package

VQFN (RHA)-40-36 mm² 6 x 6

Features

  • 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
  • APPLICATIONS
    • IMVP-6.5 VCORE Applications for Adapter, Battery, NVDC or 3 V/5 V/12 V Rails

  • 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
  • APPLICATIONS
    • IMVP-6.5 VCORE Applications for Adapter, Battery, NVDC or 3 V/5 V/12 V Rails

Description

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.

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.