Home Power management DC/DC switching regulators Step-down (buck) regulators Buck converters (integrated switch)

TPS543C20

ACTIVE

4-V to 14-V, 40-A synchronous SWIFT™ buck converter with adaptive internal compensation

Product details

Vin (min) (V) 4 Vin (max) (V) 14 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iout (max) (A) 40 Iq (typ) (mA) 4.3 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2000 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Over Current Protection, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode ACM/AECM Duty cycle (max) (%) 70 Type Converter
Vin (min) (V) 4 Vin (max) (V) 14 Vout (min) (V) 0.6 Vout (max) (V) 5.5 Iout (max) (A) 40 Iq (typ) (mA) 4.3 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 2000 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Over Current Protection, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO Fixed Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode ACM/AECM Duty cycle (max) (%) 70 Type Converter
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • Internally-Compensated Advanced Current Mode Control 40-A POL
  • Input Voltage Range: 4 V to 14 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated 3/0.9-mΩ Stacked NexFET™ Power Stage With Lossless Low-Side Current Sensing
  • Fixed Frequency - Synchronization to an External Clock and/or Sync Out
  • Pin Strapping Programmable Switching Frequency
    • 300 kHz to 2 MHz for Standalone
    • 300 kHz to 1 MHz for Stackable
  • Stack 2× for up to 80 A With Current Share, Voltage Share, and CLK Sync
  • Pin Strapping Programmable Reference from 0.6 V to 1.1 V With 0.5% Accuracy
  • Differential Remote Sensing
  • Safe Start-Up into Prebiased Output
  • High-Accuracy Hiccup Current Limit
  • Asynchronous Pulse Injection (API) and Body Braking
  • 40-pin, 5-mm × 7-mm LQFN Package with 0.5-mm Pitch and Single Thermal Pad
  • Create a Custom Design Using the TPS543C20 With the WEBENCH® Power Designer
  • Internally-Compensated Advanced Current Mode Control 40-A POL
  • Input Voltage Range: 4 V to 14 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated 3/0.9-mΩ Stacked NexFET™ Power Stage With Lossless Low-Side Current Sensing
  • Fixed Frequency - Synchronization to an External Clock and/or Sync Out
  • Pin Strapping Programmable Switching Frequency
    • 300 kHz to 2 MHz for Standalone
    • 300 kHz to 1 MHz for Stackable
  • Stack 2× for up to 80 A With Current Share, Voltage Share, and CLK Sync
  • Pin Strapping Programmable Reference from 0.6 V to 1.1 V With 0.5% Accuracy
  • Differential Remote Sensing
  • Safe Start-Up into Prebiased Output
  • High-Accuracy Hiccup Current Limit
  • Asynchronous Pulse Injection (API) and Body Braking
  • 40-pin, 5-mm × 7-mm LQFN Package with 0.5-mm Pitch and Single Thermal Pad
  • Create a Custom Design Using the TPS543C20 With the WEBENCH® Power Designer

The TPS543C20 employs an internally compensated emulated peak-current-mode control, with a clock synchronizable, fixed-frequency modulator for EMI-sensitive POL. The internal integrator and directly amplifying ramp tracking loop eliminate the need for external compensation over a wide range of frequencies thereby making the system design flexible, dense, and simple. Optional API and body braking help improve transient performance by significantly reducing undershoot and overshoot, respectively. Integrated NexFET™ MOSFETs with low-loss switching facilitate high efficiency and deliver up to 40 A in a 5-mm × 7-mm PowerStack™ package with a layout friendly thermal pad. Two TPS543C20 devices can be stacked together to provide up to 80-A point-of-load.

The TPS543C20 employs an internally compensated emulated peak-current-mode control, with a clock synchronizable, fixed-frequency modulator for EMI-sensitive POL. The internal integrator and directly amplifying ramp tracking loop eliminate the need for external compensation over a wide range of frequencies thereby making the system design flexible, dense, and simple. Optional API and body braking help improve transient performance by significantly reducing undershoot and overshoot, respectively. Integrated NexFET™ MOSFETs with low-loss switching facilitate high efficiency and deliver up to 40 A in a 5-mm × 7-mm PowerStack™ package with a layout friendly thermal pad. Two TPS543C20 devices can be stacked together to provide up to 80-A point-of-load.

Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
TPS543B20 ACTIVE 4-V to 19-V, 25-A synchronous SWIFT™ buck converter with adaptive internal compensation Lower current equivalent part.
TPS543C20A ACTIVE 4-V to 16-V, 40-A synchronous SWIFT™ buck converter with adaptive internal compensation Offers wider VIN.

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 17
Type Title Date
* Data sheet TPS543C20 4-VIN to 14-VIN, 40-A Stackable, Synchronous Step-Down SWIFT™ Converter With Adaptive Internal Compensation datasheet (Rev. B) PDF | HTML 09 May 2018
Analog Design Journal Control-Mode Quick Reference Guide (Rev. B) PDF | HTML 29 Aug 2023
User guide TPS543C20 SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 09 Feb 2022
User guide TPS543C20 2-Phase SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 08 Feb 2022
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Application note DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems 11 Dec 2018
White paper Internally compensated advanced current mode (ACM) (Rev. A) 07 Dec 2018
Analog Design Journal Comparing internally-compensated advanced current mode (ACM) w/ D-CAP3™ control (Rev. A) 06 Nov 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 24 Aug 2018
Technical article Maintain a constant phase margin in a synchronous buck converter PDF | HTML 02 Mar 2018
Technical article Powering FPGAs – Improving overshoot of voltage regulators for Intel Arria 10 and PDF | HTML 08 Feb 2018
Technical article Powering FPGAs – Improving undershoot of voltage regulators with asynchronous puls PDF | HTML 02 Feb 2018
Analog Design Journal Understanding thermal-resistance specification of DC/DC convert. w/ MOSFETs 04 Jan 2018
Technical article How to correctly layout a 40A power supply: copper, vias and loop path PDF | HTML 22 Aug 2017
Technical article Lightning-fast internally-compensated ACM topology – what can it do for you? PDF | HTML 18 May 2017
Technical article The effects of gate-driver strength in synchronous buck converters PDF | HTML 11 Apr 2017
User guide TPS543C20 40-A Single Synchronous Step-Down Converter 08 Feb 2017

Design & development

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

Evaluation board

TPS543C20EVM-054 — 40-A Fixed Frequency Non-Compensation Stackable Syncronous Buck Converter Evaluation Module

The TPS543C20EVM-054 evaluation module provides a fixed 0.9-V output at up to 40 A from a nominal 12-V input bus. The design acheives 90% peak efficiency.

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS543C20EVM-869 — TPS543C20 2-Phase, 80A Synchronous Step-Down SWIFT™ Converter Evaluation Module

The TPS543C20EVM-869 is a two-phase buck converter with two TPS543C20 devices interleaved. It uses a nominal 12-V bus to produce a regulated 0.9-V output at up to 80-A load current (40-A per phase). The TPS543C20EVM-869 is designed to demonstrate the stacking operation of the TPS543C20. The (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS543C20 PSpice Transient Model (Rev. A)

SLUM589A.ZIP (127 KB) - PSpice Model
Calculation tool

SLURB00 TPS543B20 TPS543C20A TPS543C20 Excel Calculator Tool and Checklist

Supported products & hardware

Supported products & hardware

Products
Buck converters (integrated switch)
TPS543B20 4-V to 19-V, 25-A synchronous SWIFT™ buck converter with adaptive internal compensation TPS543C20 4-V to 14-V, 40-A synchronous SWIFT™ buck converter with adaptive internal compensation TPS543C20A 4-V to 16-V, 40-A synchronous SWIFT™ buck converter with adaptive internal compensation
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 (...)
Reference designs

TIDA-01444 — 180-W, Dual-Channel, Step-Down Converter Reference Design with 97% Efficiency for Server PSU

This is a reference design for server PSU, PC PSU and other step-down converter applications that implements a 180-W buck, dual-channel DC/DC converter with a regulatory 12-V DC input voltage designed to provide the terminal load voltage with greater than 97% efficiency and good thermal (...)
Design guide: PDF
Schematic: PDF
Reference designs

PMP21619 — Dual-phase compact reference design for 2.7 V 60 A for telecommunications

This reference design uses only 2 ICs in a stacked configuration to provide 2.7 V at 60 A in a compact form factor. Both an all ceramics output capacitors version and a low ESR polymer output capacitors version were demonstrated to meet requirement of less than 3% undershoot for a step load from 2 (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP21386 — Dual Phase Stackable Buck Converter Reference Design with Full Test Capability

This reference design uses TPS543C20 in a stacked configuration to provide 0.85V @ 40A in a compact (21mm x 35mm) form factor with low temperature rise with no airflow. Board includes on board high speed dynamic load tester, output ripple probe interface, and test point for stability analyzer, (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP20050 — 1V, 20A Highly Integrated Synchronous Buck Converter Reference Design

The TPS543C20 is a highly integrated, synchronous buck converter tailored for high density power solutions wich features high performance integrated MOSFETs with very low RDSon to achieve high efficiency. This converter enables the design of a 1V, 20A power supply capable of acheiving efficiency (...)
Test report: PDF
Schematic: PDF
Package Pins Download
LQFN-CLIP (RVF) 40 View options

Ordering & quality

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

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos