Product details

Iout (Max) (A) 35 Vin (Min) (V) 4.5 Vin (Max) (V) 15 Vout (Min) (V) 0.35 Vout (Max) (V) 2 Soft start Adjustable Features Current Sharing, EMI Tested, Enable, Frequency Synchronization, PMBus, Phase Interleaving, Power Good, Remote Sense, Tracking Operating temperature range (C) -40 to 105 Iq (Typ) (uA) 55000 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1000 Switching frequency (Min) (kHz) 300 Duty cycle (Max) (%) 83 Topology Buck, Synchronous Buck
Iout (Max) (A) 35 Vin (Min) (V) 4.5 Vin (Max) (V) 15 Vout (Min) (V) 0.35 Vout (Max) (V) 2 Soft start Adjustable Features Current Sharing, EMI Tested, Enable, Frequency Synchronization, PMBus, Phase Interleaving, Power Good, Remote Sense, Tracking Operating temperature range (C) -40 to 105 Iq (Typ) (uA) 55000 Regulated outputs (#) 1 Switching frequency (Max) (kHz) 1000 Switching frequency (Min) (kHz) 300 Duty cycle (Max) (%) 83 Topology Buck, Synchronous Buck
QFM (MOL) 59 240 mm² 15 x 16
  • Complete Integrated PMBus™ Power Solution
  • Pin Compatible With TPSM846C24 (non-PMBus)
  • Stackable up to 70 A With Current Sharing
  • Output Voltage Range 0.35 V to 2 V
  • Output Voltage Accuracy as Tight as 0.5%
  • 15 mm × 16 mm Footprint (6.4 Max Height)
  • 300-kHz to 1-MHz Switching Frequency
  • Synchronization to an External Clock
  • Differential Remote Sense
  • Power-Good Output
  • Prebias Output Monotonic Start-Up
  • PMBus Telemetry: Current, Voltage, Temperature
  • Programmable Protection and Fault Response
  • Programmable UVLO, Soft Start/Stop, Delays
  • Operating IC Junction Range: –40°C to +125°C
  • Operating Ambient Range: –40°C to +105°C
  • Enhanced Thermal Performance: 8.7°C/W
  • Meets EN55022 Class A Emissions
  • Create a Custom Design Using the TPSM846C23 With the WEBENCH® Power Designer
  • Complete Integrated PMBus™ Power Solution
  • Pin Compatible With TPSM846C24 (non-PMBus)
  • Stackable up to 70 A With Current Sharing
  • Output Voltage Range 0.35 V to 2 V
  • Output Voltage Accuracy as Tight as 0.5%
  • 15 mm × 16 mm Footprint (6.4 Max Height)
  • 300-kHz to 1-MHz Switching Frequency
  • Synchronization to an External Clock
  • Differential Remote Sense
  • Power-Good Output
  • Prebias Output Monotonic Start-Up
  • PMBus Telemetry: Current, Voltage, Temperature
  • Programmable Protection and Fault Response
  • Programmable UVLO, Soft Start/Stop, Delays
  • Operating IC Junction Range: –40°C to +125°C
  • Operating Ambient Range: –40°C to +105°C
  • Enhanced Thermal Performance: 8.7°C/W
  • Meets EN55022 Class A Emissions
  • Create a Custom Design Using the TPSM846C23 With the WEBENCH® Power Designer

The TPSM846C23 is a 35-A fixed-frequency, PMBus-compliant, step-down power module, with PMBus commands that allow for the configuration, control, and monitoring of key power regulator functions. The module incorporates the controller, power MOSFETs, inductor, and associated components into a rugged, thermally enhanced, surface-mount package. The user supplies the input and output capacitors along with a few other passive components to set the operating parameters of the module. Two modules can be configured to work in parallel to provide up to a 70-A, two-phase power solution.

The PMBus interface provides for converter configuration of output voltage, UVLO, soft start, soft stop, overcurrent, and thermal shutdown parameters. The interface also provides support for telemetry that can report the actual output voltage, output current, and device temperature. Standard PMBus warning and fault functions are also supported. The device supports PMBus communication speeds up to 400 kHz and supports a subset of the commands in the PMBus 1.3 specification.

The 15-mm × 16-mm component footprint is easy to solder onto a printed circuit board and allows a compact, point-of-load design.

The TPSM846C23 is a 35-A fixed-frequency, PMBus-compliant, step-down power module, with PMBus commands that allow for the configuration, control, and monitoring of key power regulator functions. The module incorporates the controller, power MOSFETs, inductor, and associated components into a rugged, thermally enhanced, surface-mount package. The user supplies the input and output capacitors along with a few other passive components to set the operating parameters of the module. Two modules can be configured to work in parallel to provide up to a 70-A, two-phase power solution.

The PMBus interface provides for converter configuration of output voltage, UVLO, soft start, soft stop, overcurrent, and thermal shutdown parameters. The interface also provides support for telemetry that can report the actual output voltage, output current, and device temperature. Standard PMBus warning and fault functions are also supported. The device supports PMBus communication speeds up to 400 kHz and supports a subset of the commands in the PMBus 1.3 specification.

The 15-mm × 16-mm component footprint is easy to solder onto a printed circuit board and allows a compact, point-of-load design.

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Technical documentation

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Type Title Date
* Data sheet TPSM846C23 4.5-V to 15-V Input, 0.35-V to 2-V Output, 35-A PMBus Power Module datasheet (Rev. F) 15 Jan 2019
Application note Soldering Considerations for Power Modules (Rev. B) 17 May 2021
Technical article 3 ways to reduce power-supply noise with power modules 15 Dec 2020
Technical article 3 big benefits of small cells 26 May 2020
White paper Power solution options for data center applications (Rev. A) 27 Feb 2020
Application note Practical Thermal Design With DC/DC Power Modules (Rev. A) 20 Nov 2019
White paper Small Cells, Big Impact: Designing Power Soutions for 5G Applications 26 Jun 2019
User guide Operating TPSM846C23 in Parallel (Rev. C) 21 Jun 2018
White paper Simplify low EMI design with power modules 20 Nov 2017
User guide TPSM846C23, 35-A, PMBus, Swift Power Module EVM (Rev. A) 26 Jun 2017
Technical article Save PCB space and overcome point-of-load design complexity with PMBus modules 27 Mar 2017

Design & development

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

Evaluation board

TPSM846C23DEVM-807 — Parallel TPSM846C23 70A PMBus Power Module Evaluation Board

The TPSM846C23DEVM-807 evaluation module (EVM) is configured to evaluate the parallel operation of the TPSM846C23 PMBus power module for output currents up to 70 A. The input voltage range is 4.5 V to 15 V, with an output voltage range of 0.35 V to 2.0 V. The EVM’s PMBus interface allows (...)

Evaluation board

TPSM846C23EVM-806 — TPSM846C23 35A PMBus Power Module Evaluation Module

The TPSM846C23EVM-806 evaluation board (EVM) is configured to evaluate the operation of the TPSM846C23 PMBus power module for output currents up to 35 A. The input voltage range is 4.5 V to 15 V, with an output voltage range of 0.35 V to 2.0 V. The EVM’s PMBus interface allows power supply (...)

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Application software & framework

FUSION_DIGITAL_POWER_DESIGNER — Digital Power Software

Fusion Digital Power™  is the Graphical User Interface (GUI) used to configure and monitor select Texas Instruments digital power controllers and sequencer/health monitors. The application uses the PMBus protocol to communicate with the device over serial bus by way of a TI USB adapter.
Simulation model

TPSM846C23 PSpice Transient Model (Rev. A)

SLVMBY1A.ZIP (182 KB) - PSpice Model
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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