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TPS54352

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4.5V to 20V Input, 1.2V 3A Synchronous Step-Down SWIFT™ Converter w/ Low-Side Gate Driver

TPS54352 is in the process of being discontinued
Consider one of these alternates:
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
TPS62933 ACTIVE 3.8-V to 30-V, 3-A, 200-kHz to 2.2-MHz, low-IQ synchronous buck converter in SOT-583 package Replacement

Product details

Vin (min) (V) 4.5 Vin (max) (V) 20 Vout (min) (V) 1.2 Vout (max) (V) 1.2 Iout (max) (A) 3 Iq (typ) (mA) 9 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 700 Features Enable, Phase Interleaving, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 85 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) 1.2 Vout (max) (V) 1.2 Iout (max) (A) 3 Iq (typ) (mA) 9 Switching frequency (min) (kHz) 250 Switching frequency (max) (kHz) 700 Features Enable, Phase Interleaving, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 85 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 mΩ, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current
  • Uses External Lowside MOSFET or Diode
  • Fixed Output Versions — 1.2V/1.5V/1.8V/2.5V/3.3V/5.0V
  • Internally Compensated for Low Parts Count
  • 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 mΩ, 4.5-A Peak MOSFET Switch for High Efficiency at 3-A Continuous Output Current
  • Uses External Lowside MOSFET or Diode
  • Fixed Output Versions — 1.2V/1.5V/1.8V/2.5V/3.3V/5.0V
  • Internally Compensated for Low Parts Count
  • 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 TPS5435x 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. The TPS5435x has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches a preset value; 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 TPS5435x devices are 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 TPS5435x 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. The TPS5435x has an under-voltage-lockout circuit to prevent start-up until the input voltage reaches a preset value; 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 TPS5435x devices are 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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Technical documentation

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Type Title Date
* Data sheet TPS54352/3/4/5/6/7: 4.5-V to 20-V Input, 3-A Output Synchronous PWM Switcher datasheet (Rev. A) 27 Oct 2004
Application note TMS320C6472 5V Input Pwr Design, Integrated FET DC/DC Converters and Controllers 26 Mar 2010
Application note Cyclone™ III FPGA Starter Kit Power Reference Design 27 Mar 2008
Application note Seminar 900 Topic 2 - Snubber Circuits: Theory, Design and Application 15 Feb 2001

Design & development

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

Evaluation board

TPS54356EVM-058 — 3-A, 4.5 to 20 Vin DC/DC Converter with Fixed 3.3V Output

Recommended tool:
TPS54320 is the recommended alternative to the TPS5435X devices. Please refer to the TPS54320EVM for new device evaluation.

The TPS54356EVM-058 evaluation module allows the designer to evaluate the internally compensated TPS54356 DC/DC converter optimized for low parts count. The (...)

User guide: PDF
Not available on TI.com
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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