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Product details

Parameters

Vin (Min) (V) 5.5 Vin (Max) (V) 36 Vout (Min) (V) 1.23 Vout (Max) (V) 31 Iout (Max) (A) 2 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 500 Switching frequency (Max) (kHz) 500 Features Enable, Over Current Protection Control mode Voltage Mode Duty cycle (Max) (%) 87 Type Converter Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Buck converters (integrated switch)

Features

  • 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
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Description

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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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LMR33620 ACTIVE SIMPLE SWITCHER® 3.8V to 36V, 2A Synchronous Buck Converter With Ultra-Low EMI Next-generation 3.8-V to 36-V, 2-A synchronous buck converter with ultra-low EMI.

Technical documentation

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No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet 2-A Wide Input Range Step-Down Converter datasheet (Rev. E) Sep. 05, 2013
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application notes Power-supply design for high-speed ADCs (Rev. A) May 18, 2015
Application notes Output Ripple Voltage for Buck Switching Regulator (Rev. A) Oct. 13, 2014
More literature Журнал по применению аналоговых компонентов 1 кв. 2010 Sep. 23, 2010
Application notes Using the TPS5430 As An Inverting Buck Boost Converter (Rev. A) Aug. 15, 2007
Application notes Using TPS5410/20/30/31/50 w/Aluminum/Ceramic Output Capacitors (Rev. C) Mar. 21, 2007
User guides TPS5420EVM-175 User's Guide Apr. 05, 2006

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$10.00
Description

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 (...)

Features
  • Internally compensated for lower parts count
  • 500 kHz switching frequency allows smaller filter components
  • Low Rds(on) integrated MOSFET for greater than 90% efficiency
  • 2% regulation accuracy
  • Supported by SWIFT Designer software tool for quick and easy design

Design tools & simulation

SIMULATION MODELS Download
SLVMAC0.ZIP (140 KB) - PSpice Model
SIMULATION MODELS Download
SLVMAM0.ZIP (52 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVMAM1.TSC (643 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMAM2.TSC (626 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLVMCU9.ZIP (6 KB) - PSpice Model

Reference designs

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TIDEP0054 This TI Design implements a solution for high-reliability, low-latency network communications for substation automation equipment in Smart Grid transmission and distribution networks. It supports the Parallel Redundancy Protocol (PRP) specification in the IEC 62439 standard using the PRU-ICSS. This (...)
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PROFIBUS Communications Development Platform
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Class 3 Multi-Output Flyback Converter for PoE PD Application Reference Design
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Design files

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

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