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TPS54KB20

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4-V to 16-V input, 25-A remote sense synchronous step-down converter

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Data sheet

TPS54KB20

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 25 Vin (min) (V) 4 Vin (max) (V) 16 Switching frequency (min) (kHz) 800 Switching frequency (max) (kHz) 1400 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Light Load Efficiency, Over Temperature Protection, Over Voltage Protection, Power good, Pre-Bias Start-Up, Soft-start adjustable, Synchronous Rectification, UVLO Fixed, Under Voltage Protection Control mode D-CAP4 Vout (min) (V) 0.9 Vout (max) (V) 5.5 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 25 Vin (min) (V) 4 Vin (max) (V) 16 Switching frequency (min) (kHz) 800 Switching frequency (max) (kHz) 1400 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Light Load Efficiency, Over Temperature Protection, Over Voltage Protection, Power good, Pre-Bias Start-Up, Soft-start adjustable, Synchronous Rectification, UVLO Fixed, Under Voltage Protection Control mode D-CAP4 Vout (min) (V) 0.9 Vout (max) (V) 5.5 Duty cycle (max) (%) 85
WQFN-FCRLF (RZR) 16 10.5 mm² 3 x 3.5 WQFN-FCRLF (RZR) 16 10.5 mm² 3.5 x 3
  • 4V to 16V input voltage range
  • 3.1V to 5.3V external VCC bias support
  • 5.8mΩ and 2.3mΩ MOSFETs
  • 25A continuous output current
  • Optimized 16-pin WQFN-HR package for efficiency and thermal performance
  • ±0.5% reference (VREF) for TJ = –40°C to +125°C
  • VREF to 5.5V output voltage range
  • Differential remote sense
  • D-CAP4 with ultra-fast load-step response
  • Supports all ceramic output capacitors
  • Selectable Auto-skip Eco-mode for high light-load efficiency
  • Programmable current limit with RILIM
  • Selectable switching frequency: 800kHz, 1.1MHz, 1.4MHz
  • Programmable soft-start time
  • Prebiased start-up capability
  • Open-drain power-good output
  • Valley overcurrent limit protection
  • Overvoltage and undervoltage fault protection
  • Pin compatible with 30A TPS54KC23
  • 4V to 16V input voltage range
  • 3.1V to 5.3V external VCC bias support
  • 5.8mΩ and 2.3mΩ MOSFETs
  • 25A continuous output current
  • Optimized 16-pin WQFN-HR package for efficiency and thermal performance
  • ±0.5% reference (VREF) for TJ = –40°C to +125°C
  • VREF to 5.5V output voltage range
  • Differential remote sense
  • D-CAP4 with ultra-fast load-step response
  • Supports all ceramic output capacitors
  • Selectable Auto-skip Eco-mode for high light-load efficiency
  • Programmable current limit with RILIM
  • Selectable switching frequency: 800kHz, 1.1MHz, 1.4MHz
  • Programmable soft-start time
  • Prebiased start-up capability
  • Open-drain power-good output
  • Valley overcurrent limit protection
  • Overvoltage and undervoltage fault protection
  • Pin compatible with 30A TPS54KC23

The TPS54KB2x device is a small, high-efficiency, synchronous buck converter with an adaptive on-time D-CAP4 control mode. The control method provides low minimum on-time and fast load-transient response across the entire output voltage range without requiring an external compensation network. Because external compensation is not required, the device is easy to use and requires few external components. The device is well-designed for space-constrained data center applications.

The TPS54KB2x device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±0.5% reference over the specified operating junction temperature range. The device features accurate load regulation and line regulation, Eco-mode or FCCM operation, programmable settings through the MSEL pin and programmable soft start.

The TPS54KB2x device is a lead-free device. The device is RoHS compliant without exemption.

The TPS54KB2x device is a small, high-efficiency, synchronous buck converter with an adaptive on-time D-CAP4 control mode. The control method provides low minimum on-time and fast load-transient response across the entire output voltage range without requiring an external compensation network. Because external compensation is not required, the device is easy to use and requires few external components. The device is well-designed for space-constrained data center applications.

The TPS54KB2x device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±0.5% reference over the specified operating junction temperature range. The device features accurate load regulation and line regulation, Eco-mode or FCCM operation, programmable settings through the MSEL pin and programmable soft start.

The TPS54KB2x device is a lead-free device. The device is RoHS compliant without exemption.
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Technical documentation

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* Data sheet TPS54KB2x 4V to 16V Input, 25 A, Remote Sense, D-CAP4 Synchronous Buck Converter datasheet (Rev. A) PDF | HTML 22 Feb 2024
Application note Point-of-Load Designs in Data Center Applications for Intel Xeon Sapphire Rapids Scalable Processors (Rev. C) PDF | HTML 09 Oct 2024
Application brief Solving Power Design Challenges in Enterprise SSD Applications PDF | HTML 23 Sep 2024
Application brief Detailed Comparison Between TPS54KB20 Family and TPS53353 Family PDF | HTML 03 Sep 2024
Application note Analyzing Butterfly-Style Footprint and Input Capacitor Removal Effects PDF | HTML 15 Feb 2024
Product overview TPS54KB20 Pre-Production to Production Change List PDF | HTML 04 May 2023
EVM User's guide TPS54KB20EVM Step-Down Converter Evaluation Module PDF | HTML 12 Apr 2023
Certificate TPS54KB20EVM EU RoHS Declaration of Conformity (DoC) 13 Mar 2023

Design & development

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

Evaluation board

TPS54KB20EVM — TPS54KB20 step-down converter evaluation module

The TPS54KB20 evaluation module (EVM) has 4 V to 16 V Input, 25 A, remote sense, D-CAP4™ step-down buck converter. The TPS54KB20 uses D-CAP4™ control mode for fast transient response, and by desensitizing the performance dependency on the level of output voltage, it improves the ease of (...)

User guide: PDF | HTML
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Simulation model

TPS54KB20 SIMPLIS Model

SLVME36.ZIP (480 KB) - SIMPLIS Model
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Calculation tool

TPS54KB2X-CALC — TPS54KB2x TPS54KC23 calculator tool and checklist

Excel-based design calculator tool with schematic and layout checklist
Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS54KB20 — 4-V to 16-V input, 25-A remote sense synchronous step-down converter TPS54KC23 — 4-V to 16-V input, 30-A, remote-sense synchronous step-down converter
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WQFN-FCRLF (RZR) 16 Ultra Librarian
WQFN-FCRLF (RZR) 16 Ultra Librarian
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