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TPS54KB20
  • TPS54KB20
  • TPS54KB20

TPS54KB20

ACTIVE

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

Texas Instruments TPS54KB20 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Buck

Iout (max) (A)

25

Vin (max) (V)

16

Vin (min) (V)

4

Vout (max) (V)

5.5

Vout (min) (V)

0.9

Features

Adjustable current limit, Adjustable soft start, Differential Remote Sense, Enable, Forced PWM, Light-load efficiency, Overcurrent protection, Overtemperature protection, Overvoltage protection, Power good, Prebias startup, Synchronous rectification, UVLO Fixed, Undervoltage protection

Control mode

D-CAP4

Operating temperature range (°C)

-40 to 125

Duty cycle (max) (%)

85

Package

WQFN-FCRLF (RZR)-16-10.5 mm² 3 x 3.5

Features

  • 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

Description

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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