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TPS54341

ACTIVE

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

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Data sheet

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LMR51440 ACTIVE 36-V, 4-A synchronous buck converter Smaller solution size, higher efficiency and lower EMI.

TPS54341

ACTIVE
Data sheet Order now

Product details

Rating Catalog Topology Buck Iout (max) (A) 3.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 41 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 152 Duty cycle (max) (%) 98 Type Converter
Rating Catalog Topology Buck Iout (max) (A) 3.5 Vin (max) (V) 42 Vin (min) (V) 4.5 Vout (max) (V) 41 Vout (min) (V) 0.8 Features Enable, Frequency synchronization, Light Load Efficiency, Over Current Protection, Power good, Tracking, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 2500 Operating temperature range (°C) -40 to 85 Iq (typ) (µA) 152 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
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
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Calculation tool

SLVC452 — TPS54360 and TPS54361 Family Design Excel Tool

Supported products & hardware

Supported products & hardware

Products
AC/DC & DC/DC converters (integrated FET)
  • 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
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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 CAD symbols, footprints & 3D models
WSON (DPR) 10 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

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Information included:
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