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

TPS546C23

ACTIVE

4.5-V to 18-V, stackable 35-A synchronous SWIFT™ buck converter with PMBus and telemetry

Order now
Data sheet

TPS546C23

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 35 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Over Current Protection, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode Voltage mode Vout (min) (V) 0.35 Vout (max) (V) 5.5 Iq (typ) (µA) 7700 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 35 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 200 Switching frequency (max) (kHz) 1000 Features Adaptive/Dynamic Voltage Scaling, Adjustable current limit, Differential Remote Sense, Enable, Forced PWM, Frequency synchronization, Over Current Protection, PMBus, Phase Interleaving, Power good, Pre-Bias Start-Up, Soft Start Adjustable, Synchronous Rectification, Telemetry, UVLO adjustable, Voltage Margining Control mode Voltage mode Vout (min) (V) 0.35 Vout (max) (V) 5.5 Iq (typ) (µA) 7700 Duty cycle (max) (%) 100
LQFN-CLIP (RVF) 40 35 mm² 7 x 5
  • PMBus™ 1.3 Compliant Converters: 35 A
  • 2-Device Stackable for up to 70 A With Current Sharing
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.35 V to 5.5 V
  • Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage
  • 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control With Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • Internal Die Temperature Monitoring
  • 64 Programmable PMBus Addresses via ADDR0 and ADDR1 Pins
  • Programmable via the PMBus Interface:
    • OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault Responses
    • Turnon and Turnoff Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock or Output Clock to Sync Out
  • Create a Custom Design Using the TPS546C23 With the WEBENCH® Power Designer
  • PMBus™ 1.3 Compliant Converters: 35 A
  • 2-Device Stackable for up to 70 A With Current Sharing
  • Input Voltage Range: 4.5 V to 18 V
  • Output Voltage Range: 0.35 V to 5.5 V
  • Integrated 3.2-mΩ and 1.4-mΩ Stacked NexFET™ Power Stage
  • 350-mV to 1650-mV Reference for Adaptive Voltage Scaling (AVS) Function and Margining through PMBus
  • 0.5% Reference Accuracy at 600 mV and Above
  • Lossless Low-Side MOSFET Current Sensing
  • Voltage Mode Control With Input Feed-Forward
  • Differential Remote Sensing
  • Monotonic Start-Up into Pre-Biased Output
  • Output Voltage and Output Current Reporting
  • Internal Die Temperature Monitoring
  • 64 Programmable PMBus Addresses via ADDR0 and ADDR1 Pins
  • Programmable via the PMBus Interface:
    • OCP, UVLO, Soft-Start, PG, OV, UV, OT Levels, Fault Responses
    • Turnon and Turnoff Delays
  • Thermal Shutdown
  • Pin Strapping for Switching Frequency: 200 kHz to 1 MHz
  • Frequency Synchronization to an External Clock or Output Clock to Sync Out
  • Create a Custom Design Using the TPS546C23 With the WEBENCH® Power Designer

The TPS546C23 devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C23 devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.

The TPS546C23 devices are PMBus 1.3 Compliant, non-isolated DC/DC converters with integrated FETs, capable of high-frequency operation and 35-A current output from a 7-mm × 5-mm package. Two TPS546C23 devices can be paralleled together to provide up to 70-A load. Current sensing is realized by sampling a small portion of the power stage current and independent on the device temperature. High-frequency, low-loss switching, provided by an integrated NexFET power stage and optimized drivers, allows for very high-density power solutions. The PMBus interface enables the AVS functions through VOUT_COMMAND, flexible converter configuration, as well as key parameters monitoring including output voltage, current, and internal die temperature. Response to fault conditions can be set to either restart, latch-off or ignore depending on system requirements.
filter 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
Same functionality with different pin-out to the compared device
TPSM846C23 ACTIVE 4.5V to 15V Input, 0.35V to 2.0V Output, 35A PMBus Power Module Upgraded integrated inductor for a simpler design.

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 14
Type Title Date
* Data sheet TPS546C23 4.5-V to 18-V, 35-A 2× Stackable Synchronous Buck Converters With PMBus Supporting Telemetry datasheet (Rev. C) PDF | HTML 11 Jun 2018
User guide TPS546C23 2-Phase SWIFT™ Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 24 Feb 2022
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
Technical article 3 big benefits of small cells PDF | HTML 26 May 2020
White paper Small Cells, Big Impact: Designing Power Soutions for 5G Applications 26 Jun 2019
Application note Programming the NVM of PMBus Buck Converters to Support Mass-Production Needs (Rev. B) 13 May 2019
Application note 如何实现比基准更低的输出电压 08 Apr 2018
Application note Analysis and Design of Input Filter for DC-DC Circuit 27 Nov 2017
Technical article Getting started with PMBus PDF | HTML 14 Sep 2017
Technical article Save PCB space and overcome point-of-load design complexity with PMBus modules PDF | HTML 27 Mar 2017
Technical article Stack current with PowerStack packages for higher power POL PDF | HTML 07 Dec 2016
EVM User's guide TPS546C23EVM1-746 Two, Separated Single-Phase Evaluation Module 21 Jun 2016
Application note Method of Graphing Safe Operating Area (SOA) Curves in DC-DC Converter 30 Mar 2016
Analog Design Journal MOSFET power losses and how they affect power-supply efficiency 26 Jan 2016

Design & development

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

Evaluation board

TPS546C23EVM1-746 — TPS546C23 35A PMBus Stackable Synchronous Buck Converter Evaluation Module

The TPS546C23EVM1-746 evaluation module provides two separate buck converters that convert from a nominal 12-V bus to produce two regulated 0.9-V outputs, up to 35 A of load current each. The TPS546C23EVM1-746 is designed to demonstrate the TPS546C23 in a typical single-phase low output voltage (...)

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

TPS546C23EVM2-746 — TPS546C23 Stacked Two-Phase 70A Evaluation Module With PMBUS

The TPS546C23EVM2-746 evaluation module combines two 35-A TPS546C23 buck converters in a stackable configuration to deliver a continuous 70-A output current and a regulated 1.2-V output from a nominal 12-V input bus. The evaluation module accomodates the PMBus interface with telemetry.

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

TPS546C23 IBIS Model

SLUM706.ZIP (53 KB) - IBIS Model
Download
Simulation model

TPS546C23 PSpice Transient Model

SLUM531.ZIP (289 KB) - PSpice Model
Download
Calculation tool

SLURB05 — TPS546C20A and TPS546C23 Excel Calculator and Layout Checklist

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
TPS546C20A — 4.5-V to 18-V, stackable 35-A synchronous SWIFT™ buck converter with PMBus and pin-strapping TPS546C23 — 4.5-V to 18-V, stackable 35-A synchronous SWIFT™ buck converter with PMBus and telemetry
Download
Reference designs

PMP20490 — High-Density 12Vin, 1.2Vout, 60A POL Reference Design with Stacked TPS546C20A PMBus DCDC Converters

The TPS546C23 provides a single IC for both control & the synchronous power stage for high current DC/DC applications and allows doubling of the current capability with use of two of the same part.  Multi-phase also allows output ripple cancellation and effective higher bandwidth control (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
LQFN-CLIP (RVF) 40 Ultra Librarian
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