TPS5450-Q1

ACTIVE

Automotive 5.5V to 36V, 5A Buck Converter

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LMR14050-Q1 ACTIVE SIMPLE SWITCHER® Automotive 40V, 5A, 2.2MHz Step-Down Converter with 40uA IQ 36V 5A Non-sync buck converter

Product details

Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 5.5 Vin (max) (V) 36 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Features Enable, Over Current Protection, Soft Start Fixed Control mode Voltage mode Vout (min) (V) 1.22 Vout (max) (V) 31 Iq (typ) (µA) 3000 Duty cycle (max) (%) 89
Rating Automotive Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 5 Vin (min) (V) 5.5 Vin (max) (V) 36 Switching frequency (min) (kHz) 500 Switching frequency (max) (kHz) 500 Features Enable, Over Current Protection, Soft Start Fixed Control mode Voltage mode Vout (min) (V) 1.22 Vout (max) (V) 31 Iq (typ) (µA) 3000 Duty cycle (max) (%) 89
HSOIC (DDA) 8 29.4 mm² 4.9 x 6
  • Qualified for Automotive Applications
  • Wide Input Voltage Range: 5.5 V to 36 V
  • Up to 5-A Continuous (6-A Peak) Output Current
  • High Efficiency Greater than 90% 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
  • 18-µA Shutdown Supply Current
  • Improved Line Regulation and Transient Response by Input Voltage Feed Forward
  • System Protected by Overcurrent Limiting, Overvoltage Protection, and Thermal Shutdown
  • –40°C to 125°C Operating Junction Temperature Range
  • Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD™ Package
  • Create a custom design using the TPS5450-Q1 with the WEBENCH® Power Designer
  • Qualified for Automotive Applications
  • Wide Input Voltage Range: 5.5 V to 36 V
  • Up to 5-A Continuous (6-A Peak) Output Current
  • High Efficiency Greater than 90% 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
  • 18-µA Shutdown Supply Current
  • Improved Line Regulation and Transient Response by Input Voltage Feed Forward
  • System Protected by Overcurrent Limiting, Overvoltage Protection, and Thermal Shutdown
  • –40°C to 125°C Operating Junction Temperature Range
  • Available in Small Thermally Enhanced 8-Pin SOIC PowerPAD™ Package
  • Create a custom design using the TPS5450-Q1 with the WEBENCH® Power Designer

The TPS5450-Q1 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 are 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 feedforward 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 TPS5450-Q1 feedback loop is internally compensated.

The TPS5450-Q1 device is available in a thermally enhanced, 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and software tools to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

The TPS5450-Q1 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 are 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 feedforward 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 TPS5450-Q1 feedback loop is internally compensated.

The TPS5450-Q1 device is available in a thermally enhanced, 8-pin SOIC PowerPAD™ package. TI provides evaluation modules and software tools to aid in achieving high-performance power supply designs to meet aggressive equipment development cycles.

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Technical documentation

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* Data sheet TPS5450-Q1 Automotive 5.5-V to 36-V, 5-A Buck Converter datasheet (Rev. B) PDF | HTML 24 Jun 2019

Design & development

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

Evaluation board

TPS5450EVM-254 — 5A Evaluation Module

This evaluation module is designed to demonstrate a typical printed-circuit-board application using the TPS5450 regulator (Vin 10 V - 31 V, up to 5 A). This does not reflect the full range of possible input and output voltages that may be used when designing with this part.

The switching frequency (...)

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

TPS5450 PSpice Transient Model

SLVM679.ZIP (200 KB) - PSpice Model
Simulation model

TPS5450 TINA-TI Transient Reference Design

SLIM218.TSC (62 KB) - TINA-TI Reference Design
Simulation model

TPS5450 TINA-TI Transient Spice Model

SLIM219.TSM (12 KB) - TINA-TI Spice Model
Simulation model

TPS5450 Unencrypted PSpice Transient Model

SLVMCV0.ZIP (3 KB) - PSpice Model
Reference designs

TIDA-00148 — USB 2.0/3.0 mass storage bridge for automotive infotainment systems

This TIDA-00148 reference design features the TUSB9261DEMO which allows quick evaluation of system compatibility for connections to SATA devices used for automotive infotainment systems. The firmware used in TIDA-00148 is capable of supporting a single SATA drive such as a solid state drive, hard (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
HSOIC (DDA) 8 Ultra Librarian

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