TPS54331-Q1

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具有 Eco-Mode? 的汽車類 3.5V 至 28V、570kHz 固定頻率 3A 降壓轉換器

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TPS62901 正在供貨 采用 1.5mm × 2mm QFN 封裝的 3V 至 17V、1A 高效率低 IQ 降壓轉換器 Next generation device

產品詳情

Rating Automotive Topology Buck Iout (max) (A) 3 Vin (max) (V) 28 Vin (min) (V) 3.5 Vout (max) (V) 25 Vout (min) (V) 0.8 Features Enable, Light-load efficiency, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 570 Switching frequency (max) (kHz) 570 Operating temperature range (°C) -40 to 150 Iq (typ) (μA) 110 Duty cycle (max) (%) 90 Type Converter
Rating Automotive Topology Buck Iout (max) (A) 3 Vin (max) (V) 28 Vin (min) (V) 3.5 Vout (max) (V) 25 Vout (min) (V) 0.8 Features Enable, Light-load efficiency, UVLO adjustable Control mode current mode Switching frequency (min) (kHz) 570 Switching frequency (max) (kHz) 570 Operating temperature range (°C) -40 to 150 Iq (typ) (μA) 110 Duty cycle (max) (%) 90 Type Converter
SOIC (D) 8 29.4 mm2 4.9 x 6
  • Qualified for Automotive Applications
  • 3.5V to 28V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8V
  • Integrated 80 mΩ High Side MOSFET Supports up to 3A Continuous Output Current
  • High Efficiency at Light Loads with Pulse Skipping Eco-mode? Control
  • Fixed 570kHz Switching Frequency
  • Typical 1μA Shutdown Quiescent Current
  • Adjustable Slow Start Limits Inrush Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency Fold Back and Thermal Shutdown Protection
  • Available in Easy-to-Use SOIC8 Package
  • Supported by SwitcherPro? Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
  • strong>For SWIFT? Documentation, See the TI Website at www.ti.com/swift
  • APPLICATIONS
    • Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays,
      Peripherals, and Battery Chargers
    • Industrial and Car Audio Power Supplies
    • 5-V, 12-V and 24-V Distributed Power Systems

SWIFT, Eco-mode, SwitcherPro, PowerPAD are trademarks of Texas Instruments.
  • Qualified for Automotive Applications
  • 3.5V to 28V Input Voltage Range
  • Adjustable Output Voltage Down to 0.8V
  • Integrated 80 mΩ High Side MOSFET Supports up to 3A Continuous Output Current
  • High Efficiency at Light Loads with Pulse Skipping Eco-mode? Control
  • Fixed 570kHz Switching Frequency
  • Typical 1μA Shutdown Quiescent Current
  • Adjustable Slow Start Limits Inrush Currents
  • Programmable UVLO Threshold
  • Overvoltage Transient Protection
  • Cycle-by-Cycle Current Limit, Frequency Fold Back and Thermal Shutdown Protection
  • Available in Easy-to-Use SOIC8 Package
  • Supported by SwitcherPro? Software Tool (http://focus.ti.com/docs/toolsw/folders/print/switcherpro.html)
  • strong>For SWIFT? Documentation, See the TI Website at www.ti.com/swift
  • APPLICATIONS
    • Consumer Applications such as Set-Top Boxes, CPE Equipment, LCD Displays,
      Peripherals, and Battery Chargers
    • Industrial and Car Audio Power Supplies
    • 5-V, 12-V and 24-V Distributed Power Systems

SWIFT, Eco-mode, SwitcherPro, PowerPAD are trademarks of Texas Instruments.

The TPS54331 is a 28-V, 3-A non-synchronous buck converter that integrates a low RDS(on) high side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1 µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle by cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.

The TPS54331 is a 28-V, 3-A non-synchronous buck converter that integrates a low RDS(on) high side MOSFET. To increase efficiency at light loads, a pulse skipping Eco-mode™ feature is automatically activated. Furthermore, the 1 µA shutdown supply current allows the device to be used in battery powered applications. Current mode control with internal slope compensation simplifies the external compensation calculations and reduces component count while allowing the use of ceramic output capacitors. A resistor divider programs the hysteresis of the input under-voltage lockout. An overvoltage transient protection circuit limits voltage overshoots during startup and transient conditions. A cycle by cycle current limit scheme, frequency fold back and thermal shutdown protect the device and the load in the event of an overload condition. The TPS54331 is available in an 8-pin SOIC package that has been internally optimized to improve thermal performance.
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類型 標題 下載最新的英語版本 日期
* 數據表 TPS54331-Q1 3-A 28-V Input, Step Down, SWIFT? DC/DC Converter With Eco-mode? 數據表 2010年 11月 8日
用戶指南 TPS54331 Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 8日

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評估板

TPS54331EVM-232 — TPS54331 28V 輸入、3.3V 輸出、3A 評估模塊

TPS54331EVM-232 是一款組裝完備且經過測試的電路，用于評估 TPS54331 同步降壓 SWIFT™ 轉換器。此 EVM 可將 3.5V 至 28V 的輸入電壓轉換為 3.3V 的穩壓輸出電壓，輸出電流最高為 3A。開關頻率在內部設置為 570kHz 的標稱值。TPS54331 封裝內部采用了高側 MOSFET 以及柵極驅動電路。MOSFET 的低漏源導通電阻有助于 TPS54331 實現高效率 (91.6%)，即使在輸出電流較高的情況下也能保持低結溫。補償組件位于集成電路 (IC) 外部，而外部除法器能實現可調節的輸出電壓。此外，TPS54331 (...)

用戶指南: PDF | HTML
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仿真模型

TPS54331 Unencrypted PSpice Transient Model

SLVMCV6.ZIP (3 KB) - PSpice Model
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仿真模型

TPS54331-Q1 PSpice Transient Model

SLVM841.ZIP (64 KB) - PSpice Model
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SOIC (D) 8 Ultra Librarian

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