TPS51217

ACTIVE

3-V to 28-V, 20-A, synchronous D-CAP buck controller for notebook power

Product details

Vin (min) (V) 3 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode D-CAP Topology Buck Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 2.6 Features Dynamic Voltage Scaling, Enable, Light Load Efficiency, Power good, Pre-Bias Start-Up, Synchronous Rectification Iq (typ) (µA) 320 Duty cycle (max) (%) 89 Number of phases 1
Vin (min) (V) 3 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode D-CAP Topology Buck Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 2.6 Features Dynamic Voltage Scaling, Enable, Light Load Efficiency, Power good, Pre-Bias Start-Up, Synchronous Rectification Iq (typ) (µA) 320 Duty cycle (max) (%) 89 Number of phases 1
WSON (DSC) 10 9 mm² 3 x 3
  • Wide Input Voltage Range: 3 V to 28 V
  • Output Voltage Range: 0.6 V to 2.6 V
  • Wide Output Load Range: 0 to 20A+
  • Built-in 0.5% 0.6 V Reference
  • D-CAP Mode with 100-ns Load Step Response
  • Adaptive On Time Control Architecture with Fixed 340kHz Operation
  • Dynamic Output Voltage Change Capability
  • 4700 ppm/°C RDS(on) Current Sensing
  • Internal 0.9-ms Voltage Servo Softstart
  • Pre-Charged Start-up Capability
  • Built-in Output Discharge
  • Power Good Output
  • Integrated Boost Switch
  • Built-in OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • SON-10 (DSC) Package
  • Wide Input Voltage Range: 3 V to 28 V
  • Output Voltage Range: 0.6 V to 2.6 V
  • Wide Output Load Range: 0 to 20A+
  • Built-in 0.5% 0.6 V Reference
  • D-CAP Mode with 100-ns Load Step Response
  • Adaptive On Time Control Architecture with Fixed 340kHz Operation
  • Dynamic Output Voltage Change Capability
  • 4700 ppm/°C RDS(on) Current Sensing
  • Internal 0.9-ms Voltage Servo Softstart
  • Pre-Charged Start-up Capability
  • Built-in Output Discharge
  • Power Good Output
  • Integrated Boost Switch
  • Built-in OVP/UVP/OCP
  • Thermal Shutdown (Non-latch)
  • SON-10 (DSC) Package

The TPS51217 is a small-sized single buck controller with adaptive on-time D-CAP™ mode. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supply in digital consumer products. A small package with minimal pin-count saves space on the PCB, while a dedicated EN pin and pre-set frequency minimize design effort required for new designs. The skip-mode at light load condition, strong gate drivers and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The TRAN pin provides freedom of masking overvoltage protection, undervoltage protection and power-good signal during the transition period of dynamic output voltage change for modern GPU power supply applications. The conversion input voltage which is the high-side FET drain voltage ranges from 3 V to 28 V and the output voltage ranges from 0.6 V to 2.6 V. The device requires an external 5-V supply. The TPS51217 is available in a 10-pin SON package specified from –40°C to 85°C.

The TPS51217 is a small-sized single buck controller with adaptive on-time D-CAP™ mode. The device is suitable for low output voltage, high current, PC system power rail and similar point-of-load (POL) power supply in digital consumer products. A small package with minimal pin-count saves space on the PCB, while a dedicated EN pin and pre-set frequency minimize design effort required for new designs. The skip-mode at light load condition, strong gate drivers and low-side FET RDS(on) current sensing supports low-loss and high efficiency, over a broad load range. The TRAN pin provides freedom of masking overvoltage protection, undervoltage protection and power-good signal during the transition period of dynamic output voltage change for modern GPU power supply applications. The conversion input voltage which is the high-side FET drain voltage ranges from 3 V to 28 V and the output voltage ranges from 0.6 V to 2.6 V. The device requires an external 5-V supply. The TPS51217 is available in a 10-pin SON package specified from –40°C to 85°C.

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Technical documentation

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Type Title Date
* Data sheet High Performance, Single Synchronous Step-Down Controller .. datasheet (Rev. B) 01 Feb 2012
User guide TPS51217 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 14 Feb 2022

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

TPS51217 PSpice Transient Model (Rev. B)

SLIM181B.ZIP (74 KB) - PSpice Model
Simulation model

TPS51217 TINA-TI Transient Reference Design

SLUM172.TSC (203 KB) - TINA-TI Reference Design
Simulation model

TPS51217 TINA-TI Transient Spice Model

SLUM173.ZIP (47 KB) - TINA-TI Spice Model
Package Pins CAD symbols, footprints & 3D models
WSON (DSC) 10 Ultra Librarian

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