NVIDIA Tegra 2.5V to 24V, 3/2/1-phase step-down controller for automotive applications


Product details


Vin (Min) (V) 2.5 Vin (Max) (V) 24 Vout (Min) (V) 0.5 Vout (Max) (V) 1.52 Iout (Max) (A) 120 Iq (Typ) (mA) 5.5 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Dynamic Voltage Scaling, Enable, Light Load Efficiency, Output Discharge, Phase Interleaving, Power Good, Pre-Bias Start-Up, Synchronous Rectification Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of Phases 3 Rating Automotive 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)


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
    • Device Human Body Model ESD Classification Level H2
    • Device Charged Device Model ESD Classification Level C3B
  • Selectable Phase Count: 3, 2, or 1
  • Dynamic Voltage and Frequency Scaling (DVFS) Digital Interface
  • I2C Interface for VID Control and Telemetry With Eight Device Addresses
  • D-CAP+ Control for Fast Transient Response
  • Dynamic Phase Add and Drop Operation
  • Switching Frequency: 300 kHz to 1 MHz
  • Digital Current Monitor
  • 7-Bit DAC Output Range: 0.50-V to 1.52-V
  • Optimized Efficiency at Light and Heavy Loads
  • Accurate, Adjustable Voltage Positioning, or Zero Slope Load-Line
  • Patented AutoBalance Phase Balancing
  • Selectable 8-Level Current Limit
  • 2.5-V to 24-V Conversion Voltage Range
  • 4-mm x 4-mm, 32-Pin, VQFN Power-Pad Package
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The TPS51632-Q1 device is a driverless step-down controller with serial control. Advanced features such as D-CAP+ architecture provide fast transient response, lowest output capacitance, and high efficiency. The TPS51632-Q1 device supports both I2C and DVFS interfaces for dynamic control of the output voltage and current monitor telemetry. It also has dynamic phase add and drop control and enters single-phase, discontinuous-current-mode operation to maximize light-load efficiency.

The TPS51632-Q1 device supports Tegra requirements for PGOOD interrupts for MaxVID violations and near OCP conditions. This interrupt behavior is programmable via I2C. Adjustable control of VCORE slew rate and voltage positioning round out the features. The TPS51604-Q1 driver is designed specifically for this generation of controllers. The TPS51632-Q1 device is packaged in a space saving, thermally-enhanced 32-pin VQFN and is rated to

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Technical documentation

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* Data sheet TPS51632-Q1 2.5 to 24-V, 3, 2, and 1-Phase Step-Down Driverless Controller for datasheet (Rev. A) Jul. 15, 2014

Design & development

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Reference designs

Small Form Factor Nvidia Tegra T40/T50 Proc Power for Automotive Infotainment Reference Design
PMP9128 This Nvidia Tegra™ T40/T50 Processor Power Automotive Infotainment reference design powers the Nvidia Tegra T40/T50 Core Processor using the TPS51632Q1 and TPS51604Q1 Automotive Qualified Devices. It is targeted towards OEM or After-Market Infotainment Designs, including Rear Seat Entertainment.
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