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TPS54350

ACTIVE

4.5V to 20V Input, 3A Synchronous Step-Down Converter with Low-Side Gate Driver

A newer version of this product is available

open-in-new Compare alternates
Same functionality with different pin-out to the compared device
TPS543320 ACTIVE 4-V to 18-V, 3-A synchronous SWIFT™ step-down converter This product offers higher efficiency, better accuracy and smaller size.
Similar functionality to the compared device
LM27402 ACTIVE 3-V to 20-V, voltage mode synchronous buck controller with DCR current sensing Wider Vin support and more switching frequency options

Product details

Vin (min) (V) 4.5 Vin (max) (V) 20 Vout (min) (V) 0.9 Vout (max) (V) 12 Iout (max) (A) 3 Iq (typ) (mA) 5 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 700 Features Enable, Frequency synchronization, Phase Interleaving, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode Voltage mode Duty cycle (max) (%) 80 Type Converter
Vin (min) (V) 4.5 Vin (max) (V) 20 Vout (min) (V) 0.9 Vout (max) (V) 12 Iout (max) (A) 3 Iq (typ) (mA) 5 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 700 Features Enable, Frequency synchronization, Phase Interleaving, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 150 Rating Catalog Regulated outputs (#) 1 Control mode Voltage mode Duty cycle (max) (%) 80 Type Converter
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • 100 m, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current
  • Uses External Lowside MOSFET or Diode
  • Output Voltage Adjustable Down to 0.891 V With 1% Accuracy
  • Synchronizes to External Clock
  • 180° Out of Phase Synchronization
  • Wide PWM Frequency – Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz
  • Internal Slow Start
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Adjustable Undervoltage Lockout
  • 16-Pin TSSOP PowerPAD™ Package
  • APPLICATIONS
    • Industrial & Commercial Low Power Systems
    • LCD Monitors and TVs
    • Computer Peripherals
    • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors

PowerPAD and SWIFT are trademarks of Texas Instruments.

  • 100 m, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current
  • Uses External Lowside MOSFET or Diode
  • Output Voltage Adjustable Down to 0.891 V With 1% Accuracy
  • Synchronizes to External Clock
  • 180° Out of Phase Synchronization
  • Wide PWM Frequency – Fixed 250 kHz, 500 kHz or Adjustable 250 kHz to 700 kHz
  • Internal Slow Start
  • Load Protected by Peak Current Limit and Thermal Shutdown
  • Adjustable Undervoltage Lockout
  • 16-Pin TSSOP PowerPAD™ Package
  • APPLICATIONS
    • Industrial & Commercial Low Power Systems
    • LCD Monitors and TVs
    • Computer Peripherals
    • Point of Load Regulation for High Performance DSPs, FPGAs, ASICs and Microprocessors

PowerPAD and SWIFT are trademarks of Texas Instruments.

The TPS54350 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54350 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; an internal slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180° out of phase synchronization.

The TPS54350 device is available in a thermally enhanced 16-pin TSSOP (PWP) PowerPAD™ package. TI provides evaluation modules and the SWIFT™ Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

The TPS54350 is a medium output current synchronous buck PWM converter with an integrated high side MOSFET and a gate driver for an optional low side external MOSFET. Features include a high performance voltage error amplifier that enables maximum performance under transient conditions and flexibility in choosing the output filter inductors and capacitors. The TPS54350 has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches 4.5 V; an internal slow-start circuit to limit in-rush currents; and a power good output to indicate valid output conditions. The synchronization feature is configurable as either an input or an output for easy 180° out of phase synchronization.

The TPS54350 device is available in a thermally enhanced 16-pin TSSOP (PWP) PowerPAD™ package. TI provides evaluation modules and the SWIFT™ Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

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Design & development

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Evaluation board

TPS54350EVM-235 — 3-A, 4.5 to 20Vin DC/DC Converter with Adjustable Output Voltage

The TPS54350EVM-235 evaluation module allows the designer to evaluate the TPS54350 SWIFT DC/DC converter optimized for small size and low height. The inductor and capacitors selected allow a wide 6-18V input and a 3.3V output up to 3A. The output voltage can be easily adjusted for lower DSP and (...)

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

TPS54350 TINA-TI Transient Reference Design

SLVM745.TSC (400 KB) - TINA-TI Reference Design
Simulation model

TPS54350 TINA-TI Transient Spice Model

SLVM746.ZIP (56 KB) - TINA-TI Spice Model
Simulation model

TPS54350 Unencrypted PSpice Transient Model Package (Rev. A)

SLVM337A.ZIP (43 KB) - PSpice Model
Gerber file

Gerber File for TPS54350EVM

SLVC041.ZIP (106 KB)
Gerber file

Gerber File for TPS5435xEVM

SLVC042.ZIP (157 KB)
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 (...)
Package Pins Download
HTSSOP (PWP) 16 View options

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