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Boost converters (integrated switch)

TPS55340

ACTIVE

5-A, 40-V, wide VIN boost, flyback, & SEPIC converter

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Data sheet

TPS55340

ACTIVE
Data sheet Order now

Product details

Topology Boost, Flyback, Forward, SEPIC Vin (min) (V) 2.9 Vin (max) (V) 32 Vout (min) (V) 3 Vout (max) (V) 38 Switch current limit (typ) (A) 6.6 Type Converter Regulated outputs (#) 1 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1200 Iq (typ) (mA) 0.5 Features Enable, Frequency synchronization, Light Load Efficiency, Nonsynchronous Duty cycle (max) (%) 90 Operating temperature range (°C) -40 to 150 Rating Catalog
Topology Boost, Flyback, Forward, SEPIC Vin (min) (V) 2.9 Vin (max) (V) 32 Vout (min) (V) 3 Vout (max) (V) 38 Switch current limit (typ) (A) 6.6 Type Converter Regulated outputs (#) 1 Switching frequency (min) (kHz) 100 Switching frequency (max) (kHz) 1200 Iq (typ) (mA) 0.5 Features Enable, Frequency synchronization, Light Load Efficiency, Nonsynchronous Duty cycle (max) (%) 90 Operating temperature range (°C) -40 to 150 Rating Catalog
HTSSOP (PWP) 14 32 mm² 5 x 6.4 WQFN (RTE) 16 9 mm² 3 x 3
  • Internal 5-A, 40-V low-side MOSFET switch
  • 2.9-V to 32-V input voltage range
  • ±0.7% reference voltage
  • 0.5-mA operating quiescent current
  • 2.7-µA shutdown supply current
  • Fixed frequency current mode PWM control
  • Frequency adjustable from 100 kHz to 1.2 MHz
  • Synchronization capability to external clock
  • Adjustable soft-start time
  • Pulse skipping for higher efficiency at light loads
  • Cycle-by-cycle current limit, thermal shutdown, and UVLO protection
  • QFN-16 (3-mm × 3-mm) and HTSSOP-14 packages with PowerPAD™
  • Wide –40°C to 150°C operating TJ range
  • Create a custom design using the TPS55340 with the WEBENCH Power Designer
  • Internal 5-A, 40-V low-side MOSFET switch
  • 2.9-V to 32-V input voltage range
  • ±0.7% reference voltage
  • 0.5-mA operating quiescent current
  • 2.7-µA shutdown supply current
  • Fixed frequency current mode PWM control
  • Frequency adjustable from 100 kHz to 1.2 MHz
  • Synchronization capability to external clock
  • Adjustable soft-start time
  • Pulse skipping for higher efficiency at light loads
  • Cycle-by-cycle current limit, thermal shutdown, and UVLO protection
  • QFN-16 (3-mm × 3-mm) and HTSSOP-14 packages with PowerPAD™
  • Wide –40°C to 150°C operating TJ range
  • Create a custom design using the TPS55340 with the WEBENCH Power Designer

The TPS55340 is a monolithic, nonsynchronous, switching regulator with integrated 5-A, 40-V power switch. The device can be configured in several standard switching-regulator topologies, including boost, SEPIC, and isolated flyback. The device has a wide input voltage range to support applications with input voltage from multicell batteries or regulated 3.3-V, 5-V, 12-V, and 24-V power rails.

The TPS55340 regulates the output voltage with current mode PWM (pulse width modulation) control, and has an internal oscillator. The switching frequency of PWM is set by either an external resistor or by synchronizing to an external clock signal. The user can program the switching frequency from 100 kHz to 1.2 MHz.

The device features a programmable soft-start function to limit inrush current during start-up and has other built-in protection features including cycle-by-cycle overcurrent limit and thermal shutdown.

The TPS55340 is available in a small 3-mm × 3-mm 16-pin QFN as well as 14-pin HTSSOP packages with PowerPAD for enhanced thermal performance.

The 5-A, 40-V TPS55340 boost converter in the HTSSOP-14 package is pin-to-pin compatible with the 3-A, 40-V TPS61175, and it extends the maximum input voltage from 18 V to 32 V.

The TPS55340 is a monolithic, nonsynchronous, switching regulator with integrated 5-A, 40-V power switch. The device can be configured in several standard switching-regulator topologies, including boost, SEPIC, and isolated flyback. The device has a wide input voltage range to support applications with input voltage from multicell batteries or regulated 3.3-V, 5-V, 12-V, and 24-V power rails.

The TPS55340 regulates the output voltage with current mode PWM (pulse width modulation) control, and has an internal oscillator. The switching frequency of PWM is set by either an external resistor or by synchronizing to an external clock signal. The user can program the switching frequency from 100 kHz to 1.2 MHz.

The device features a programmable soft-start function to limit inrush current during start-up and has other built-in protection features including cycle-by-cycle overcurrent limit and thermal shutdown.

The TPS55340 is available in a small 3-mm × 3-mm 16-pin QFN as well as 14-pin HTSSOP packages with PowerPAD for enhanced thermal performance.

The 5-A, 40-V TPS55340 boost converter in the HTSSOP-14 package is pin-to-pin compatible with the 3-A, 40-V TPS61175, and it extends the maximum input voltage from 18 V to 32 V.
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Technical documentation

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Type Title Date
* Data sheet TPS55340 Integrated 5-A Wide Input Range Boost/SEPIC/Flyback DC/DC Regulator datasheet (Rev. E) PDF | HTML 13 Sep 2021
Application note Mitigating Procedure on Voltage Spike of Switching Node from Flyback Converter PDF | HTML 08 Oct 2020
EVM User's guide TPS55340EVM-017 5-12V Input, 24V Output Boost Evaluation Module (Rev. B) 17 Jul 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
User guide PMLK Boost Experiment Book (Rev. A) 31 Aug 2016
EVM User's guide Using the TPS55340EVM-147 6-18V input, 12V output SEPIC Evaluation Module (Rev. A) 02 Aug 2013
EVM User's guide Using the TPS55340EVM-148 8-24V Input, 5V Output Flyback Evaluation Module (Rev. A) 18 Jun 2013
Application note Isolated Continuous Conduction Mode Flyback Using the TPS55340 31 Dec 2012
Application note Using the TPS55340 as a SEPIC.. (Rev. A) 18 Jul 2012

Design & development

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

Evaluation board

PMLKBOOSTEVM — TI-PMLK Boost Experiment Board using TPS55340 & LM5122

The TI-PMLK Boost Experiment Board is part of the TI Power Management Lab Kit (TI-PMLK) series. TI-PMLK series provides hands on learning to reinforce power supply knowledge. The modular format allows users to customize the TI-PMLK series experience in a way that makes the most impact on (...)

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

TPS55340EVM-017 — Boost Evaluation Module for TPS55340 5A, 40V Current Mode Integrated-FET DC Converter

The Texas Instruments TPS55340EVM-017 evaluation module is a fully assembled and tested circuit for evaluating the TPS55340 5A, 40V Current Mode Integrated-FET Boost DC Converter.
User guide: PDF
Not available on TI.com
Evaluation board

TPS55340EVM-147 — SEPIC Evaluation Module for TPS55340 5A, 40V Current Mode Integrated-FET DC Converter

The Texas Instruments TPS55340EVM-147 evaluation module (EVM) helps designers evaluate the performance of the TPS55340 DC/DC boost converter in a SEPIC topology.
User guide: PDF
Not available on TI.com
Evaluation board

TPS55340EVM-148 — Isolated Flyback Topology Module for TPS55340 5A, 40V Current Mode Integrated-FET DC Converter

The Texas Instruments TPS55340EVM-148 helps designers evaluate the performance of the TPS55340 DC/DC Boost Converter in an isolated flyback topology.
User guide: PDF
Not available on TI.com
Simulation model

TPS55340 PSpice Average Model

SLVMDB3.ZIP (44 KB) - PSpice Model
Download
Simulation model

TPS55340 TINA-TI Transient Reference Design

SLVMA31.TSC (188 KB) - TINA-TI Reference Design
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Simulation model

TPS55340 TINA-TI Transient Spice Model

SLVMA30.ZIP (40 KB) - TINA-TI Spice Model
Download
Simulation model

TPS55340 Unencrypted PSpice Transient Model

SLVMD92.ZIP (5 KB) - PSpice Model
Download
Simulation model

TPS55340 Unencrypted PSpice Transient Model Package (Rev. B)

SLVM589B.ZIP (48 KB) - PSpice Model
Download
Calculation tool

FLYBUCK-FLYBACK-DESIGN-CALC — Flybuck / Flyback Calculator

This tool helps a power supply engineer to select the right isolated DC-DC topology based on the specifications. Depending on the topology chosen, the calculator also recommends the right IC for the design.

Supported products & hardware

Supported products & hardware

Products
Boost converters (integrated switch)
LM2577 — 3.5-V to 40-V, 3-A low component count step-up regulator LM2585 — 4-V to 40-V, 3-A step-up wide VIN flyback regulator LM2586 — 4-V to 40-V, 3-A step-up wide VIN flyback regulator with frequency synchronization LM2587 — 4V to 40V, 5A Step-Up Wide Vin Flyback Regulator LM2588 — 4-V to 40-V, 5-A step-up wide VIN flyback regulator with frequency synchronization LM2621 — 1.2V to 14V input voltage, 1A load current, step-up DC-DC LM2623 — 0.8V to 14V input voltage, 2A load current, step-up DC-DC LM2623-Q1 — 0.8-V to 14-V input voltage, 2-A load current, step-up DC/DC, AEC-Q100 qualified LM2735 — 520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator LM2735-Q1 — 520-kHz, 1.6-MHz space efficient boost and SEPIC DC/DC regulator, AEC-Q100 qualified LM3578A — 2-V to 40-VIN switching regulators in buck, boost, terminal, depending upon the application LM5000 — 3.1-40V Wide Vin, 2A Current Mode Non-Synchronous Boost Regulator LM5001 — 3.1-75V Wide Vin, 1A Current Mode Non-Synchronous Switch Mode Regulator LM5001-Q1 — 3.1-V to 75-V wide VIN, 1-A current mode non-synchronous switch mode regulator LM5002 — 3.1-75V Wide Vin, 0.5A Current Mode Boost, Flyback, Sepic Converter LM78S40 — 1.5A Adjustable Step Up, Step Down or Inverting Regulator TPS55340 — 5-A, 40-V, wide VIN boost, flyback, & SEPIC converter TPS55340-EP — Enhanced integrated, 5-A, 40-V wide input range boost/SEPIC/flyback DC/DC regulator TPS55340-Q1 — Integrated, 5-A 40-V wide input range boost/SEPIC/flyback DC/DC regulator, AEC-Q100 qualified TPS61175 — 3-A ,40V High Voltage Boost Converter with Soft-start and Programmable Switching Frequency TPS61175-Q1 — 3-A, 40-V high voltage boost converter with soft-start and programmable switching frequency
Buck converters (integrated switch)
LM5015 — 4.25-75V, Monolithic Two-Switch Forward DC-DC Regulator
Isolated DC/DC converters & modules
LM25017 — 7.5-48V Wide Vin, 650mA Constant On-Time Synchronous Buck Regulator LM25018 — 7.5-48V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator LM25019 — 7.5-48V Wide Vin, 100mA Constant On-Time Synchronous Buck Regulator LM34925 — 7.5-100V Wide Vin, 100mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters LM34926 — 7.5-100V Wide Vin, 300mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters LM34927 — 7.5-100V Wide Vin, 600mA Integrated Secondary Bias Regulator for Isolated DC/DC Converters LM5017 — 7.5-100V Wide Vin, 600mA Constant On-Time Synchronous Buck Regulator LM5018 — 7.5-100V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator LM5019 — 7.5-100V Wide Vin, 100mA Constant On-Time Synchronous Buck Regulator LM5160 — LM5160 wide input 65V, 2A synchronous buck/Fly-Buck™ converter LM5160-Q1 — Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter LM5160A — LM5160A Wide Input 65V, 2A Synchronous Buck / Fly-Buck™ Converter LM5161 — Wide Input 4.5-V to 100-V, 1-A Synchronous Buck / Fly-Buck Converter TPS55010 — 2.95V To 6V Input, 2W, Isolated DC/DC Converter with Integrated FETS
Boost controllers (external switch)
LM3017 — High Efficiency Low-Side Controller with True Shutdown LM3478 — 2.97~40V Wide Input Range Boost/SEPIC/Flyback DC-DC Controller LM3478Q-Q1 — 40-V wide VIN low-side N-channel controller for switching regulators with 10-µA shutdown current LM3481 — 2.97V to 48V High-Efficiency Controller for Boost, SEPIC and Flyback LM3481-Q1 — 2.97-V to 48-V high-efficiency controller for boost, SEPIC and flyback, AEC-Q100 qualified LM3488 — 2.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators LM3488Q-Q1 — 40-V wide VIN low-side N-channel controller for switching regulators with 5-µA shutdown current LM5020 — 13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller LM5022 — 6-60V Wide Vin, current mode boost, SEPIC and Flyback controller TL1451 — Dual Pulse-Width-Modulation Control Circuit TL1451A — 3.6V to 50V dual channel controller with Wide input voltage range TL1451A-EP — Enhanced Product Dual Pulse-Width-Modulation Control Circuits TL1451A-Q1 — 3.6-V to 50-V dual-channel PWM controller, AEC-Q100 qualified TL5001 — PWM Controller with wide input range, with ±5% tolerance on reference, operation –20°C to 85°C TL5001A — PWM Controller with wide input range, with ±3% tolerance on reference, operation –20°C to 85°C TL5001A-Q1 — PWM Controller with wide input range, with ±3% tolerance on reference, operation –20°C to 85°C TL5001M — PWM Controller with wide input range, with ±5% tolerance on reference, operation –55°C to 125°C TPS40210-Q1 — 4.5-V to 52-V wide input range current mode boost controller with 700-mV reference voltage TPS40211-Q1 — 4.5-V to 52-V wide input range current mode boost controller with 260-mV reference voltage TPS43000 — Multi-Topology (buck, boost, sepic) High Frequency DC/DC Controller UC2572 — Negative output Flyback pulse width modulator
PWM controllers
LM3524D — 40V, 0.2A 350KHz PWM controller
Download
Calculation tool

SLVC430 — TPS55340 Boost Design Excel Spreadsheet Tool

Supported products & hardware

Supported products & hardware

Products
Boost converters (integrated switch)
TPS55330 — Integrated 5-A 24-V Wide Input Range Boost/SEPIC/Flyback DC-DC Regulator TPS55340 — 5-A, 40-V, wide VIN boost, flyback, & SEPIC converter TPS55340-Q1 — Integrated, 5-A 40-V wide input range boost/SEPIC/flyback DC/DC regulator, AEC-Q100 qualified
Hardware development
Evaluation board
TPS55330EVM-017 — Integrated 5-A, 24-V Wide Input Range Boost DC/DC Regulator Evaluation Module TPS55340EVM-017 — Boost Evaluation Module for TPS55340 5A, 40V Current Mode Integrated-FET DC Converter
Download
Calculation tool

SLVC433 — TPS55340 SEPIC Design Excel Tool

Supported products & hardware

Supported products & hardware

Products
Boost converters (integrated switch)
TPS55340 — 5-A, 40-V, wide VIN boost, flyback, & SEPIC converter
Hardware development
Evaluation board
TPS55340EVM-147 — SEPIC Evaluation Module for TPS55340 5A, 40V Current Mode Integrated-FET DC Converter
Download
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 (...)
Request
Reference designs

TIDA-00080 — Isolated delta-sigma modulator based AC/DC voltage and current measurement module reference design

This isolated shunt based current measurement unit enables high accuracy current measurement without the use of Current Transformers (CT). The isolation is achieved through the use of AMC1304 that incorporates both high voltage isolation as well as the Delta-Sigma Modulator. This solution (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-00171 — Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives

This evaluation kit and reference design implements the AMC130x reinforced isolated delta-sigma modulators along with integrated Sinc filters in the C2000™ TMS320F28377D Delfino™ microcontroller. The design provides an ability to evaluate the  performance of these measurements: three motor (...)
User guide: PDF
Schematic: PDF
Reference designs

PMP10802 — Integrated FET Boost Converter (11V@1.2A) Reference Design

This integrated FET boost converter supplies 11V @ 1.2A from a 6V - 8.4V input (2S Li-Ion battery). The converter was optimized to provide high efficiency and low cost in a compact size for applications such as portable radios.
Test report: PDF
Schematic: PDF
Reference designs

PMP10486 — 15V@1A Integrated FET Boost Converter Reference Design

This integrated FET boost converter uses the TPS55340 controller to regulate 15V @ 1A from a 5V (4.5V min) input voltage. It is capable of supplying 1.5A pk loads for short duration, has excellent transient performance, and a small form-factor.
Test report: PDF
Schematic: PDF
Reference designs

PMP8871 — Low Voltage Flyback Converter Provides 5KV Isolation Reference Design

This isolated flyback converter provides a regulated 5V @ 1A output from a low voltage input (3.5V - 5.5V). The PMP8871 is built on the TPS55340 boost converter EVM.
Test report: PDF
Package Pins Download
HTSSOP (PWP) 14 View options
WQFN (RTE) 16 View options
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Ordering & quality

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