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TPS54JB20

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2.7-V to 16-V input, 20-A synchronous buck converter with remote sense and latch-off current limit

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Product details

Parameters

Vin (Min) (V) 2.7 Vin (Max) (V) 16 Vout (Min) (V) 0.9 Vout (Max) (V) 5.5 Iout (Max) (A) 20 Iq (Typ) (uA) 910 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 1000 Features Adjustable Current Limit, Differential Remote Sense, Enable, Forced PWM, Light Load Efficiency, Over Current Protection, Power Good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Tracking, UVLO Fixed Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VQFN-HR (RWW) 21 12 mm² 4 x 3 open-in-new Find other Buck converters (integrated switch)

Features

  • 4-V to 16-V input range up to 20-A without external bias
  • 2.7-V to 16-V input range up to 20-A with external bias ranging from 3.13-V to 3.6-V
  • Output voltage range: 0.9-V to 5.5-V
  • Integrated 7.7-mΩ and 2.4-mΩ MOSFETs support 20-A continuous output current
  • D-CAP3™ with ultra fast load-step response
  • Supports all ceramic output capacitors
  • Differential remote sense with 0.9-V ±1% VREF for –40°C to +125°C junction temperature
  • Auto-skip Eco-mode™ for high light-load efficiency
  • Programmable current limit with RTRIP
  • Pin-selectable switching frequency: 600-kHz, 800-kHz, 1-MHz
  • Differential remote sense for high output accuracy
  • Programmable soft-start time
  • External reference input for tracking
  • Prebiased start-up capability
  • Open-drain power-good output
  • Latch-off for OC, UV, and OV faults
  • 4-mm × 3-mm, 21-pin QFN package
  • Pin compatible with 12-A TPS54JA20
  • Fully RoHS compliant without exemption

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Description

The TPS54JB20 device is a small high-efficiency synchronous buck converter with an adaptive on-time D-CAP3 control mode. Since external compensation is not required, the device is easy to use and requires few external components. The device is well-suited for space-constrained data center applications.

The TPS54JB20 device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±1%, 0.9-V reference over the full operating junction temperature range. The device features fast load-transient response, accurate load regulation and line regulation, Skip-mode or FCCM operation, and programmable soft-start.

The TPS54JB20 device is a lead-free device. It is fully RoHS compliant without exemption.

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TPS54JA20 ACTIVE 2.7-V to 16-V input, 12-A synchronous buck converter with remote sense and latch-off current limit Pin-to-pin device rated for 12-A output current

Technical documentation

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Type Title Date
* Data sheet TPS54JB20 2.7-V to 16-V Input, 20-A Synchronous Buck Converter With Remote Sense, 3-V Internal LDO and Latch-off Current Limit datasheet (Rev. B) Nov. 23, 2020
Application note Benefits Using a Buck Converter's External Vcc Bias Pin May 25, 2021
Application note Measuring the Bode Plot for D-CAPx DC/DC Converters May 25, 2021
User guide TPS54JB20EVM-023 20-A, Buck Converter Evaluation Module (Rev. A) Oct. 30, 2020
Certificate TPS54JB20EVM-023 EU Declaration of Conformity (DoC) Jun. 17, 2020
Technical article Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019

Design & development

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

Hardware development

EVALUATION BOARD Download
document-generic User guide
49
Description
The TPS548B28 is a D-CAP3™ synchronous buck converter designed for 20-A output current, and the TPS548B28EVM evaluation module (EVM) is designed to demonstrate the small printed-circuit-board areas that may be achieved when designing with the device. The high-side and low-side switching (...)
Features
  • D-CAP3 control mode with fast load step response
  • Supports all ceramic output capacitors
  • Auto-skipping for high light load efficiency
  • Differential remote sense for high output accuracy
EVALUATION BOARD Download
document-generic User guide
49
Description
The TPS54JB20EVM is an evaluation module (EVM) designed to demonstrate the small printed circuit board are that may be achieved when designing with the TPS54JB20 device, a D-CAP3 synchronous buck converter designed for up to 20-A output current. The TPS54JB20 device has integrated (...)
Features
  • D-CAP3 control mode with fast load step response
  • Supports all ceramic output capacitors
  • Auto-skipping for high light load efficiency
  • Differential remote sense for high output accuracy

Design tools & simulation

SIMULATION MODEL Download
SNVMC03.ZIP (564 KB) - SIMPLIS Model
SIMULATION MODEL Download
SNVMC04.ZIP (302 KB) - PSpice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOL Download
SLVRBH6.ZIP (509 KB)

CAD/CAE symbols

Package Pins Download
VQFN-HR (RWW) 21 View options

Ordering & quality

Information included:
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  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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