TPS543B20

ACTIVE

4-19Vin 25A Stackable Synchronous Step-down SWIFT™ Converter w/ Adaptive Internal Compensation

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Product details

Parameters

Vin (Min) (V) 4 Vin (Max) (V) 19 Vout (Min) (V) 0.6 Vout (Max) (V) 5.5 Iout (Max) (A) 25 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 300 Switching frequency (Max) (kHz) 2000 Features Enable, Frequency Synchronization, Over Current Protection, Phase Interleaving, Power Good, Pre-Bias Start-Up, Synchronous Rectification, UVLO Fixed, Differential Remote Sense, Forced PWM, Soft Start Adjustable, Adjustable Current Limit Control mode Current Mode Duty cycle (Max) (%) 70 Type Converter Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

LQFN-CLIP (RVF) 40 35 mm² 7 x 5 open-in-new Find other Buck converters (integrated switch)

Features

  • Internally-Compensated Advanced Current Mode Control 25-A POL
  • Input Voltage Range: 4 V to 19 V
  • Output Voltage Range: 0.6 V to 5.5 V
  • Integrated 4.1/1.9-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 50 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 TPS543B20 With the WEBENCH® Power Designer

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Description

The TPS543B20 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 25 A in a 5-mm × 7-mm PowerStack™ package with a layout friendly thermal pad. Two TPS543B20 devices can be stacked together to provide up to 50-A point-of-load.

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Technical documentation

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Type Title Date
* Datasheet TPS543B20 4-VIN to 19-VIN, 25-A Stackable, Synchronous Step-Down SWIFT™ Converter With Adaptive Internal Compensation datasheet (Rev. B) Mar. 28, 2018
Technical articles 3 big benefits of small cells May 26, 2020
Application notes Non-Isolated Point-of-Load Solutions for Tiger Lake in PC Applications (Rev. A) May 21, 2020
Selection guides Buck Converter Quick Reference Guide (Rev. A) Mar. 31, 2020
Application notes DC/DC Converter Solutions for Hardware Accelerators in Data Center Applications Aug. 14, 2019
White papers Small Cells, Big Impact: Designing Power Soutions for 5G Applications Jun. 26, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Non-isolated point-of-load solutions for VR13.HC in rack server & datacenter app Mar. 05, 2019
Application notes DC/DC Point-of-load Power Solutions for Wired Networking Switch Systems Dec. 11, 2018
White papers Internally compensated advanced current mode (ACM) (Rev. A) Dec. 07, 2018
Application notes Solve Point-of-Load Power Design Challenges: Single Board Computer Applications Aug. 24, 2018
Technical articles Why are there so many control modes for step-down DC/DC converters and controllers? Apr. 04, 2018
Technical articles Powering FPGAs – Improving overshoot of voltage regulators for Intel Arria 10 and Stratix 10 FPGAs Feb. 08, 2018
Application notes Understanding thermal-resistance specification of DC/DC convert. w/ MOSFETs Jan. 04, 2018
Selection guides Control-Mode Quick Reference Guide (Rev. A) Sep. 14, 2017
User guides TPS543B20 25-A Single Phase Synchronous Step-Down Converter May 22, 2017

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
$49.00
Description
The TPS543B20EVM-054 evaluation module (EVM) allows users to evaluate the TPS543B20RVF. The TPS543B20RVF is a fixed frequency non-compensation stackable synchronous buck converter with integrated MOSFETs. It provides a fixed 0.9-V output at up to 25-A from a 12-V input bus.
Features
  • No external compensation control
  • 2-Device stackable for up to 50 A
  • Programmable switching frequency from 300 kHz to 2 MHz
  • Synchronization to an external clock
  • 10 selectable reference from 0.6 V to 1.1 V with 0.5% accuracy
  • Differential remote sensing

Design tools & simulation

SIMULATION MODELS Download
SLUM590.ZIP (128 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
LQFN-CLIP (RVF) 40 View options

Ordering & quality

Support & training

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