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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

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Data sheet

TPS54JA20

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 12 Vin (min) (V) 2.7 Vin (max) (V) 16 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 Control mode D-CAP3 Vout (min) (V) 0.9 Vout (max) (V) 5.5 Iq (typ) (µA) 680 Duty cycle (max) (%) 86
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 12 Vin (min) (V) 2.7 Vin (max) (V) 16 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 Control mode D-CAP3 Vout (min) (V) 0.9 Vout (max) (V) 5.5 Iq (typ) (µA) 680 Duty cycle (max) (%) 86
VQFN-HR (RWW) 21 12 mm² 4 x 3
  • 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
  • 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

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.

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

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Type Title Date
* Data sheet 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. C) PDF | HTML 15 Jul 2021
Application note Measuring the Bode Plot of D-CAP™, D-CAP2™, and D-CAP3™ DC/DC Converters (Rev. A) PDF | HTML 21 Apr 2023
Application note Benefits Using a Buck Converter's External Vcc Bias Pin PDF | HTML 25 May 2021
EVM User's guide Using the TPS54JA20EVM-023 12-A, Buck Converter Evaluation Module (Rev. A) 06 May 2020

Design & development

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

Evaluation board

TPS548A28EVM — 15-A DC-DC buck converter evaluation module with 0.6 Vref and internal 3-V LDO

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 (...)
User guide: PDF
Not available on TI.com
Evaluation board

TPS548A29EVM — 15-A DC-DC buck converter evaluation module with 0.6 Vref and internal 4.5-V LDO

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 (...)
User guide: PDF
Not available on TI.com
Evaluation board

TPS54JA20EVM — 12-A DC-DC buck converter evaluation module with 0.9 Vref and internal 3-V LDO

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 (...)
User guide: PDF
Not available on TI.com
Simulation model

TPS54JA20 PSpice Transient Model

SNVMBZ4.ZIP (234 KB) - PSpice Model
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Simulation model

TPS54JA20 SIMPLIS Transient and Average Model

SNVMBZ2.ZIP (393 KB) - SIMPLIS Model
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Calculation tool

SLVRBH6 — TPS54J06x TPS54Jx20 TPS548x28-9 Excel Calculator Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS548A28 — 2.7-V to 16-V, 15-A synchronous buck converter with remote sense and 3-V LDO TPS548A29 — 2.7-V to 16-V, 15-A synchronous buck converter with remote sense and 4.5-V LDO TPS548B27 — 2.7-V to 16-V, 20-A synchronous step-down converter with differential remote sense TPS548B28 — 2.7-V to 16-V input, 20-A synchronous step-down converter with remote sense and hiccup current limit TPS54J060 — 4-V to 16-V input, 6-A synchronous buck converter, 900-mV reference voltage, latch-off current limit TPS54J061 — 4-V to 16-V input, 6-A synchronous buck converter, 600-mV reference voltage and hiccup current limit TPS54JA20 — 2.7-V to 16-V input, 12-A synchronous buck converter with remote sense and latch-off current limit TPS54JB20 — 2.7-V to 16-V input, 20-A synchronous buck converter with remote sense and latch-off current limit
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Package Pins CAD symbols, footprints & 3D models
VQFN-HR (RWW) 21 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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  • MSL rating/Peak reflow
  • MTBF/FIT estimates
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  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

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