Home Power management AC/DC & DC/DC converters (integrated FET)
Home
Power management
AC/DC & DC/DC converters (integrated FET)

TPS543B22

ACTIVE

4-V to 18-V input, advanced current mode, 20-A synchronous SWIFT™ step-down converter

Order now
Data sheet

TPS543B22

ACTIVE
Data sheet Order now

Product details

Iout (max) (A) 20 Vin (min) (V) 4 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2200 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode ACM/AECM Vout (min) (V) 0.5 Vout (max) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0012
Iout (max) (A) 20 Vin (min) (V) 4 Vin (max) (V) 18 Topology Buck Type Converter Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 2200 Features Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, UVLO adjustable Control mode ACM/AECM Vout (min) (V) 0.5 Vout (max) (V) 7 Rating Catalog Operating temperature range (°C) -40 to 150 Iq (typ) (A) 0.0012
WQFN-FCRLF (RYS) 17 11.25 mm² 4.5 x 2.5
  • Fixed-frequency, internally compensated, advanced current mode (ACM) control
  • Integrated 6.5mΩ and 2mΩ MOSFETs
  • 4V to 18V input voltage range
  • 0.5V to 7V output voltage range
  • True differential remote sense amplifier (RSA)
  • Three selectable PWM ramp options to optimize the control loop performance
  • Five selectable switching frequencies: 500kHz, 750kHz, 1MHz, 1.5MHz, and 2.2MHz
  • Synchronizable to an external clock
  • 0.5V, ±0.5% voltage reference accuracy over full temperature range
  • 1ms, 2ms, 4ms, and 8ms selectable soft-start times
  • Monotonic start-up into prebiased outputs
  • Selectable current limits to support 20A and 16A operation
  • Enable with adjustable input undervoltage lockout
  • Power-good output monitor
  • Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
  • –40°C to 150°C operating junction temperature
  • 2.5mm × 4.5mm, 17-pin WQFN-HR package with 0.5mm pitch
  • Lead-free (RoHS compliant)
  • Pin compatible with the TPS543A26 and TPS543A22
  • Available in thermally enhanced package TPS543B25T (drop-in compatible)
  • SIMPLIS models available
  • Create a custom design using the TPS543B22 with the WEBENCH® Power Designer
  • Fixed-frequency, internally compensated, advanced current mode (ACM) control
  • Integrated 6.5mΩ and 2mΩ MOSFETs
  • 4V to 18V input voltage range
  • 0.5V to 7V output voltage range
  • True differential remote sense amplifier (RSA)
  • Three selectable PWM ramp options to optimize the control loop performance
  • Five selectable switching frequencies: 500kHz, 750kHz, 1MHz, 1.5MHz, and 2.2MHz
  • Synchronizable to an external clock
  • 0.5V, ±0.5% voltage reference accuracy over full temperature range
  • 1ms, 2ms, 4ms, and 8ms selectable soft-start times
  • Monotonic start-up into prebiased outputs
  • Selectable current limits to support 20A and 16A operation
  • Enable with adjustable input undervoltage lockout
  • Power-good output monitor
  • Output overvoltage, output undervoltage, input undervoltage, overcurrent, and overtemperature protection
  • –40°C to 150°C operating junction temperature
  • 2.5mm × 4.5mm, 17-pin WQFN-HR package with 0.5mm pitch
  • Lead-free (RoHS compliant)
  • Pin compatible with the TPS543A26 and TPS543A22
  • Available in thermally enhanced package TPS543B25T (drop-in compatible)
  • SIMPLIS models available
  • Create a custom design using the TPS543B22 with the WEBENCH® Power Designer

The TPS543B22 is a high-efficiency 18V, 20A synchronous buck converter employing an internally compensated, fixed-frequency advanced current mode (ACM) control architecture, which while always operating under FCCM, generates output voltages from 0.5V to 7V. The device is capable of providing high efficiency while operating at a switching frequency up to 2.2MHz, making the device an excellent choice for designs requiring a small solution size. The fixed frequency controller can operate from 500kHz to 2.2MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, two-wire remote sense, selectable soft-start times, monotonic start-up into prebiased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.

The TPS543B22 is available in a small 2.5mm × 4.5mm HotRod™ WQFN-FCRLF package.

The TPS543B22 is a high-efficiency 18V, 20A synchronous buck converter employing an internally compensated, fixed-frequency advanced current mode (ACM) control architecture, which while always operating under FCCM, generates output voltages from 0.5V to 7V. The device is capable of providing high efficiency while operating at a switching frequency up to 2.2MHz, making the device an excellent choice for designs requiring a small solution size. The fixed frequency controller can operate from 500kHz to 2.2MHz and can be synchronized to an external clock using the SYNC pin. Additional features include a high accuracy voltage reference, two-wire remote sense, selectable soft-start times, monotonic start-up into prebiased outputs, selectable current limits, adjustable UVLO through the EN pin, and a full suite of fault protections.

The TPS543B22 is available in a small 2.5mm × 4.5mm HotRod™ WQFN-FCRLF package.
open-in-new Find other AC/DC & DC/DC converters (integrated FET)
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
NEW TPS543A22 ACTIVE 4-V to 18-V input, advanced current mode, 12-A, synchronous SWIFT™ step-down converter Lower current (12A) version
TPS543A26 ACTIVE 4-V to 18-V input, advanced current mode, 16-A synchronous SWIFT™ step-down converter Lower current (16A) version
NEW TPS543B25 ACTIVE 4-V to 18-V input, advanced current mode, 25-A synchronous SWIFT™ step-down converter Higher current (25A) version
Same functionality with different pin-out to the compared device
NEW TPSM843B22 ACTIVE 4-V to 18-V input, advanced current mode, 20-A synchronous SWIFT™ step-down power module Power module version with integrated inductor

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 5
Type Title Date
* Data sheet TPS543B22 4V to 18V Input, 20 A, Synchronous, SWIFT Step-Down Converter With Internally Compensated, Advanced Current Mode Control datasheet (Rev. B) PDF | HTML 15 Feb 2024
EVM User's guide TPS543B22EVM SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. B) PDF | HTML 06 Sep 2023
Analog Design Journal 2단계 필터를 사용하여 전압 리플 감소 PDF | HTML 03 May 2023
Analog Design Journal 使用第二級濾波器來減少電壓漣波 PDF | HTML 03 May 2023
Analog Design Journal Using a second stage filter to reduce voltage ripple PDF | HTML 10 Jan 2023

Design & development

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

Evaluation board

TPS543B22EVM — TPS543B22 synchronous buck converter evaluation module

The TPS543B22 evaluation module (EVM) a synchronous buck converter, integrating both power MOSFETs with low drain to source resistance to minimize solution size and provides high efficiency at full load. The TPS543B22EVM uses fixed frequency advanced current mode control with low minimum on-time (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS543B22 PSpice Transient Model

SLVME33.ZIP (234 KB) - PSpice Model
Download
Simulation model

TPS543B22 SIMPLIS Transient and Average Model (Rev. A)

SLVMDY4A.ZIP (928 KB) - SIMPLIS Model
Download
Package Pins Download
WQFN-FCRLF (RYS) 17 View options
TI's Standard Terms and Conditions for Evaluation Items apply.

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

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

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