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TPS54341

ACTIVE

4.5 to 42V Input 3.5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™

A newer version of this product is available

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Same functionality with different pin-out to the compared device
LMR51440 ACTIVE 36-V, 4-A synchronous buck converter Smaller solution size, higher efficiency and lower EMI.

Product details

Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 41 Iout (max) (A) 3.5 Iq (typ) (mA) 0.152 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (min) (V) 0.8 Vout (max) (V) 41 Iout (max) (A) 3.5 Iq (typ) (mA) 0.152 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Operating temperature range (°C) -40 to 85 Rating Catalog Regulated outputs (#) 1 Control mode current mode Duty cycle (max) (%) 98 Type Converter
WSON (DPR) 10 16 mm² 4 x 4
  • High Efficiency at Light Loads with Pulse Skipping Eco-mode™
  • 87-mΩ High-Side MOSFET
  • 152-µA Operating Quiescent Current and 2-µA Shutdown Current
  • 100-kHz to 2.5-MHz Adjustable Switching Frequency
  • Synchronizes to External Clock
  • Low Dropout at Light Loads with Integrated BOOT Recharge FET
  • Adjustable UVLO Voltage and Hysteresis
  • UV and OV Power-Good Output
  • Adjustable Soft-Start and Sequencing
  • 0.8-V 1% Internal Voltage Reference
  • 10-Pin WSON with Thermal Pad Package
  • –40°C to 150°C TJ Operating Range
  • Supported by WEBENCH® Software Tool
  • High Efficiency at Light Loads with Pulse Skipping Eco-mode™
  • 87-mΩ High-Side MOSFET
  • 152-µA Operating Quiescent Current and 2-µA Shutdown Current
  • 100-kHz to 2.5-MHz Adjustable Switching Frequency
  • Synchronizes to External Clock
  • Low Dropout at Light Loads with Integrated BOOT Recharge FET
  • Adjustable UVLO Voltage and Hysteresis
  • UV and OV Power-Good Output
  • Adjustable Soft-Start and Sequencing
  • 0.8-V 1% Internal Voltage Reference
  • 10-Pin WSON with Thermal Pad Package
  • –40°C to 150°C TJ Operating Range
  • Supported by WEBENCH® Software Tool

The TPS54341 device is a 42-V, 3.5-A step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 45 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load supply current to 152 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage startup ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the nominal voltage.

A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54341 device is available in a 10-pin 4-mm × 4-mm WSON package.

The TPS54341 device is a 42-V, 3.5-A step-down regulator with an integrated high-side MOSFET. The device survives load-dump pulses up to 45 V per ISO 7637. Current mode control provides simple external compensation and flexible component selection. A low-ripple pulse-skip mode reduces the no-load supply current to 152 µA. Shutdown supply current is reduced to 2 µA when the enable pin is pulled low.

Undervoltage lockout is internally set at 4.3 V but can increase using an external resistor divider at the enable pin. The output voltage startup ramp is controlled by the soft start pin that can also be configured for sequencing/tracking. An open-drain power-good signal indicates the output is within 93% to 106% of the nominal voltage.

A wide adjustable switching-frequency range allows for optimization of either efficiency or external component size. Cycle-by-cycle current limit, frequency foldback and thermal shutdown protects internal and external components during an overload condition.

The TPS54341 device is available in a 10-pin 4-mm × 4-mm WSON package.

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Technical documentation

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Type Title Date
* Data sheet TPS54341 4.5-V to 42-V Input, 3.5-A Step-Down DC-DC Converter With Soft-Start And Eco-Mode™ datasheet (Rev. A) PDF | HTML 31 Oct 2016
EVM User's guide Evaluation Module for the TPS54341 Step-Down Converter 05 Nov 2013
Application note Creating a Universal Car Charger for USB Devices From the TPS54240 and TPS2511 (Rev. E) 16 Sep 2013
Application note Create a Split-Rail Power Supply with a Wide Input Voltage Buck Regulator (Rev. A) 26 Oct 2012
Application note Create an Inverting Power Supply from a Step-Down Regulator (Rev. B) 26 Oct 2012

Design & development

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

Evaluation board

TPS54341EVM-555 — TPS54341EVM-555 4.5- to 60-V Input 3.5-A Step-Down DC-DC Converter Evaluation Module

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

TPS54341 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM972A.ZIP (817 KB) - PSpice Model
Calculation tool

SLVC452 TPS54360 and TPS54361 Family Design Excel Tool

Supported products & hardware

Supported products & hardware

Products
Buck converters (integrated switch)
TPS54340 42 V Input, 3.5 A, Step-Down DC/DC Converter with Eco-mode™ TPS54341 4.5 to 42V Input 3.5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ TPS54360 4.5V to 60 V Input, 3.5 A Step-Down Converter with Eco-mode TPS54360B 60-V input, 3.5-A, step-down DC/DC converter with Eco-Mode™ TPS54361 4.5 to 60V Input 3.5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ TPS54540 42 V, 5 A, Step-Down DC-DC Converter with Eco-Mode TPS54541 4.5V to 42V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™ TPS54560 4.5V to 60 V input, 5 A step-down converter with Eco-Mode TPS54560B 4.5-V to 60-V input, 5-A, step-down DC-DC converter with Eco-mode™ TPS54561 4.5V to 60V Input 5A Step-Down DC-DC Converter With Soft-Start and Eco-mode™
Hardware development
Evaluation board
TPS54340EVM-182 TPS54340 Step-Down Converter Evaluation Module TPS54341EVM-555 TPS54341EVM-555 4.5- to 60-V Input 3.5-A Step-Down DC-DC Converter Evaluation Module TPS54360EVM-182 60V Input, 3.5A, Step-Down Converter Evaluation Module TPS54361EVM-555 TPS54361EVM-555 TPS54361 4.5-V to 60-V input 3.5-A step-down DC/DC converter evaluation module TPS54541EVM-555 TPS54541EVM-555 - 4.5V to 42V Input 5A Step-Down DC-DC Converter Evaluation Module TPS54560EVM-515 TPS54560 Step-Down DC-DC Converter Evaluation Module TPS54561EVM-555 TPS54561EVM-555 - 60 V Input, 5A, Step Down DC-DC Converter Evaluation Module
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

TIDEP-01008 — Multi-sensor platform reference design on Jacinto™ ADAS processors

The multi-sensor platform reference design for Advanced Driver Assistance Systems (ADAS) from D3 Engineering provides qualified developers with a fully functioning evaluation platform for testing and development of ADAS applications, for use primarily in the automotive industry.  D3 also (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
WSON (DPR) 10 View options

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