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TPS54JA20

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2.7-V to 16-V input, 12-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) 12 Iq (Typ) (mA) 0.68 Iq (Typ) (uA) 680 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 1000 Features Differential Remote Sense, Enable, Over Current Protection, Power Good, Soft Start Adjustable, Synchronous Rectification, 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 12-A without external bias
  • 2.7-V to 16-V input range up to 12 A with external bias ranging from 3.13 V to 5.3 V
  • Output voltage range: 0.9 V to 5.5 V
  • Integrated 10.2-mΩ and 3.1-mΩ MOSFETs
  • 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
  • Programmable soft-start time
  • External reference input for tracking
  • Prebiased startup 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 15-A TPS548A28/TPS548A29
  • Fully RoHS compliant without exemption

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Description

The TPS54JA20 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 TPS54JA20 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 TPS54JA20 device is a lead-free device. It is fully RoHS compliant without exemption.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet TPS54JA20 2.7-V to 16-V Input, 12-A Synchronous Buck Converter With Remote Sense, 3-V Internal LDO and Latch-off Current Limit datasheet (Rev. B) Jun. 22, 2020
User guides Using the TPS54JA20EVM-023 12-A, Buck Converter Evaluation Module (Rev. A) May 06, 2020
Technical articles 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 BOARDS Download
document-generic User guide
49
Description
The TPS548A28EVM is a D-CAP3 synchronous buck converter designed for up to 15-A output current, with an evaluation module (EVM) designed to demonstrate the small printed circuit board that may be achieved when designing with the TPS548A28 device. The TPS548A28 has integrated high-side and (...)
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 BOARDS Download
document-generic User guide
49
Description
The TPS548A29EVM is a D-CAP3 synchronous buck converter designed for up to 15-A output current, with an evaluation module (EVM) designed to demonstrate the small printed circuit board that may be achieved when designing with the TPS548A29 device. The TPS548A29 has integrated high-side and (...)
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 BOARDS Download
document-generic User guide
49
Description
The TPS54JA20EVM evaluation module (EVM) is a fully assembled and tested circuit for evaluating the TPS54JA20 step-down converter. The TPS54JA20 is a D-CAP3 synchronous buck converter designed for up to 12-A output current, with an evaluation module designed to demonstrate the small printed (...)
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 MODELS Download
SNVMBZ2.ZIP (393 KB) - SIMPLIS Model
SIMULATION MODELS Download
SNVMBZ4.ZIP (234 KB) - PSpice Model
SIMULATION TOOLS 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
  • (...)

CAD/CAE symbols

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

Ordering & quality

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