TPS5420 5.5V to 36V Input, 2A, 500kHz Step-Down Converter | TI.com

TPS5420 (ACTIVE)

5.5V to 36V Input, 2A, 500kHz Step-Down Converter

5.5V to 36V Input, 2A, 500kHz Step-Down Converter - TPS5420
Datasheet
 

Recommended alternative parts

  • TPS54240  -  Recommended for new Designs – The TPS54240 has a higher Vin and is in a smaller thermally enhanced package.
  • TPS5410  -  1A pin compatible version of the TPS5420
  • TPS5430  -  3A pin compatible version of the TPS5430
  • TPS40200  -  4.5 to 52V DC/DC controller requiring external MOSFET

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.

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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WEBENCH® Designer TPS5420

  Min   Max Range
Vin  V 5.5 to 36.0V
Vout  V 1.23 to 31V
Iout  A ≤ 2A
Ambient Temp  °C -40 to 125°C

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
TPS5420 Order now 5.5     36     1.23     31     2     1     500     500     3     Enable
Over Current Protection    
Voltage Mode     87     -40 to 125     Catalog     SOIC | 8     Converter     8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)