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TPS548B28

ACTIVE

2.7-V to 16-V input, 20-A synchronous step-down converter with remote sense and hiccup current limit

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Data sheet
2.7-V to 16-V input, 20-A synchronous step-down converter with remote sense and hiccup current limit

TPS548B28

ACTIVE
Data sheet Order now

Product details

Vin (Min) (V) 2.7 Vin (Max) (V) 16 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 20 Iq (Typ) (uA) 680 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
Vin (Min) (V) 2.7 Vin (Max) (V) 16 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 20 Iq (Typ) (uA) 680 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
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VQFN-HR (RWW) 21 12 mm² 4 x 3
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  • 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: 0.6-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 0.6-V ±1% VREF for –40°C to +125°C junction temperature
  • Selectable FCCM or auto-skipping 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
  • Hiccup for OC and UV faults, latch-off for OV Fault
  • 4-mm × 3-mm, 21-pin QFN package
  • Pin compatible with 15-A TPS548A28
  • Fully RoHS-compliant without exemption
  • 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: 0.6-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 0.6-V ±1% VREF for –40°C to +125°C junction temperature
  • Selectable FCCM or auto-skipping 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
  • Hiccup for OC and UV faults, latch-off for OV Fault
  • 4-mm × 3-mm, 21-pin QFN package
  • Pin compatible with 15-A TPS548A28
  • Fully RoHS-compliant without exemption
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The TPS548B28 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 TPS548B28 device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±1%, 0.6-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 TPS548B28 is a lead-free device. It is fully RoHS compliant without exemption.

The TPS548B28 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 TPS548B28 device has differential remote sense, high-performance integrated MOSFETs, and an accurate ±1%, 0.6-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 TPS548B28 is a lead-free device. It is fully RoHS compliant without exemption.

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NEW TPS548B27 ACTIVE 2.7-V to 16-V, 20-A synchronous step-down converter with differential remote sense Same functionality but in a package with 0.5-mm pin-pitch.

Technical documentation

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Type Title Date
* Data sheet TPS548B28 2.7-V to 16-V Input, 20-A Synchronous Buck Converter With Remote Sense, 3-V Internal LDO and Hiccup Current Limit datasheet 07 Dec 2020
Analog design journal Designing with Small DC/DC Converters: HotRod™ QFN vs. Enhanced HotRod™ QFN 18 Nov 2021
Application note Point-of-Load Solutions for Network Interface Cards (NIC) 08 Sep 2021
Application note Benefits Using a Buck Converter's External Vcc Bias Pin 25 May 2021
Application note Measuring the Bode Plot for D-CAPx DC/DC Converters 25 May 2021
Application note Point-of-Load Solutions in Servers for Intel® Xeon® Sapphire Rapids Processors 08 Jan 2021
Certificate TPS548B28EVM-023 EU Declaration of Conformity (DoC) 18 Jun 2020
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) 08 Jan 2020
User guide TPS548B28EVM-023 20-A, Buck Converter Evaluation Module 27 Jun 2019
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019

Design & development

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

Evaluation board

TPS548B28EVM — 20-A DC-DC buck converter evaluation module with 0.6-Vref and internal 3-V LDO

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 (...)
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Evaluation board

TPS54JB20EVM — 16-V, 20-A step-down converter with differential remote sense evaluation module

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 (...)
document-pdfAcrobat User guide
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Simulation model

TPS548B28 PSpice Transient Model

SNVMC07.ZIP (191 KB) - PSpice Model
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Simulation model

TPS548B28 SIMPLIS Transient and Average Model

SNVMC08.ZIP (562 KB) - SIMPLIS Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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Calculation tool

TPS54J06x TPS54Jx20 TPS548x28-9 Excel Calculator Tool (Rev. A)

SLVRBH6A.ZIP (515 KB)
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Package Pins Download
VQFN-HR (RWW) 21 View options

Ordering & quality

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  • Ongoing reliability monitoring

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