Product details

Vin (Min) (V) 5.5 Vin (Max) (V) 36 Vout (Min) (V) 1.23 Vout (Max) (V) 31 Iout (Max) (A) 2 Iq (Typ) (uA) 3000 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 500 Features Enable, Over Current Protection Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 5.5 Vin (Max) (V) 36 Vout (Min) (V) 1.23 Vout (Max) (V) 31 Iout (Max) (A) 2 Iq (Typ) (uA) 3000 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 500 Features Enable, Over Current Protection Operating temperature range (C) -40 to 125 Rating Catalog Regulated outputs (#) 1
SOIC (D) 8 19 mm² 3.91 x 4.9
  • Wide Input Voltage Range: 5.5 V to 36 V
  • Up to 2-A Continuous (3-A Peak) Output Current
  • High Efficiency up to 95% Enabled by
    110-mΩ Integrated MOSFET Switch
  • Wide Output Voltage Range: Adjustable Down to 1.22 V
    with 1.5% Initial Accuracy
  • Internal Compensation Minimizes External Parts Count
  • Fixed 500-kHz Switching Frequency for Small Filter Size
  • Improved Line Regulation and Transient Response by
    Input Voltage Feed Forward
  • System Protected by Over Current Limiting, Over Voltage
    Protection and Thermal
    Shutdown
  • –40°C to 125°C Operating Junction
    Temperature Range
  • Available in Small 8-Pin SOIC Package
  • Wide Input Voltage Range: 5.5 V to 36 V
  • Up to 2-A Continuous (3-A Peak) Output Current
  • High Efficiency up to 95% Enabled by
    110-mΩ Integrated MOSFET Switch
  • Wide Output Voltage Range: Adjustable Down to 1.22 V
    with 1.5% Initial Accuracy
  • Internal Compensation Minimizes External Parts Count
  • Fixed 500-kHz Switching Frequency for Small Filter Size
  • Improved Line Regulation and Transient Response by
    Input Voltage Feed Forward
  • System Protected by Over Current Limiting, Over Voltage
    Protection and Thermal
    Shutdown
  • –40°C to 125°C Operating Junction
    Temperature Range
  • Available in Small 8-Pin SOIC Package

The TPS5420 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features is a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5420 feedback loop is internally compensated.

The TPS5420 device is available in an easy to use 8-pin SOIC package. TI provides evaluation modules and the Designer software tool to aid in quickly achieving high-performance power supply designs to meet aggressive equipment development cycles.

The TPS5420 is a high-output-current PWM converter that integrates a low resistance high side N-channel MOSFET. Included on the substrate with the listed features is a high performance voltage error amplifier that provides tight voltage regulation accuracy under transient conditions; an undervoltage-lockout circuit to prevent start-up until the input voltage reaches 5.5 V; an internally set slow-start circuit to limit inrush currents; and a voltage feed-forward circuit to improve the transient response. Using the ENA pin, shutdown supply current is reduced to 18 µA typically. Other features include an active-high enable, overcurrent limiting, overvoltage protection and thermal shutdown. To reduce design complexity and external component count, the TPS5420 feedback loop is internally compensated.

The TPS5420 device is available in an easy to use 8-pin SOIC package. TI provides evaluation modules and the 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 2-A Wide Input Range Step-Down Converter datasheet (Rev. E) 05 Sep 2013
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
Analog design journal Power-supply design for high-speed ADCs (Rev. A) 18 May 2015
Application note Output Ripple Voltage for Buck Switching Regulator (Rev. A) 13 Oct 2014
More literature Журнал по применению аналоговых компонентов 1 кв. 2010 23 Sep 2010
Application note Using the TPS5430 As An Inverting Buck Boost Converter (Rev. A) 15 Aug 2007
Application note Using TPS5410/20/30/31/50 w/Aluminum/Ceramic Output Capacitors (Rev. C) 21 Mar 2007
User guide TPS5420EVM-175 User's Guide 05 Apr 2006

Design & development

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

Evaluation board

TPS5420EVM-175 — 10V to 36Vin, 2A Step Down Converter Evaluation Module

The TPS5420EVM-175 evaluation module allows the designer to evaluate the TPS5420 SWIFT DC/DC converter optimized for small size. The input voltage range of this module is 10 V to 36 V and the output voltage is pre-set to 5 V. The output voltage can be easily adjusted by changing a (...)

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Simulation model

TPS5420 PSpice Transient Model

SLVMAC0.ZIP (140 KB) - PSpice Model
Simulation model

TPS5420 TINA-TI Transient Spice Model

SLVMAM0.ZIP (52 KB) - TINA-TI Spice Model
Simulation model

TPS5420 TINA-TI Startup Reference Design

SLVMAM1.TSC (643 KB) - TINA-TI Reference Design
Simulation model

TPS5420 TINA-TI Steady State Reference Design

SLVMAM2.TSC (626 KB) - TINA-TI Reference Design
Simulation model

TPS5420 Unencrypted PSpice Transient Model

SLVMCU9.ZIP (6 KB) - PSpice Model
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 (...)
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