TPS54290

現行

4.5 V 至 18 V 輸入、300 kHz、1.5/2.5 A 雙同步降壓轉換器

產品詳細資料

Rating Catalog Operating temperature range (°C) -40 to 145 Topology Buck Type Converter Iout (max) (A) 2.5 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 300 Features Enable, Phase Interleaving, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 16.2 Iq (typ) (µA) 1800 Duty cycle (max) (%) 90
Rating Catalog Operating temperature range (°C) -40 to 145 Topology Buck Type Converter Iout (max) (A) 2.5 Vin (min) (V) 4.5 Vin (max) (V) 18 Switching frequency (min) (kHz) 300 Switching frequency (max) (kHz) 300 Features Enable, Phase Interleaving, Synchronous Rectification Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 16.2 Iq (typ) (µA) 1800 Duty cycle (max) (%) 90
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • 4.5-V to 18-V Input Range
  • Output Voltage Range 0.8 V to DMAX × VIN
  • Fully Integrated Dual Buck: 1.5 A and 2.5 A
  • Three Fixed Switching Frequency Versions:
    • TPS54290: 300 kHz
    • TPS54291: 600 kHz
    • TPS54292: 1.2 MHz
  • Integrated UVLO
  • 0.8 VREF With 1% Accuracy (0°C to 85°C)
  • Internal Soft Start:
    • TPS54290: 5.2 ms
    • TPS54291: 2.6 ms
    • TPS54292: 1.3 ms
  • Dual PWM Outputs 180° Out-of-Phase
  • Dedicated Enable for Each Channel
  • Current Mode Control for Simplified Compensation
  • External Compensation
  • Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
  • Integrated Bootstrap Switch
  • Thermal Shutdown Protection at 145°C
  • 16-Pin PowerPAD™ HTSSOP Package
  • APPLICATIONS
    • Set-Top Boxes
    • Digital TVs
    • Power for DSP
    • Consumer Electronics

All other trademarks are the property of their respective owners

  • 4.5-V to 18-V Input Range
  • Output Voltage Range 0.8 V to DMAX × VIN
  • Fully Integrated Dual Buck: 1.5 A and 2.5 A
  • Three Fixed Switching Frequency Versions:
    • TPS54290: 300 kHz
    • TPS54291: 600 kHz
    • TPS54292: 1.2 MHz
  • Integrated UVLO
  • 0.8 VREF With 1% Accuracy (0°C to 85°C)
  • Internal Soft Start:
    • TPS54290: 5.2 ms
    • TPS54291: 2.6 ms
    • TPS54292: 1.3 ms
  • Dual PWM Outputs 180° Out-of-Phase
  • Dedicated Enable for Each Channel
  • Current Mode Control for Simplified Compensation
  • External Compensation
  • Pulse-by-Pulse Overcurrent Protection, 2.2-A and 3.8-A Overcurrent Limit
  • Integrated Bootstrap Switch
  • Thermal Shutdown Protection at 145°C
  • 16-Pin PowerPAD™ HTSSOP Package
  • APPLICATIONS
    • Set-Top Boxes
    • Digital TVs
    • Power for DSP
    • Consumer Electronics

All other trademarks are the property of their respective owners

The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.

Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.

The TPS54290, TPS54291, and TPS54292 devices are dual-output, fully synchronous buck converters capable of supporting applications with a minimal number of external components. It operates from a 4.5-V to 18-V input supply voltage, and supports output voltages as low as 0.8 V and as high as 90% of the input voltage.

Both high-side and low-side MOSFETs are integrated to provide fully synchronous conversion with higher efficiency. Channel 1 can provide up to 1.5 A of continuous current. Meanwhile, Channel 2 supports up to 2.5 A.

Current mode control simplifies the compensation. The external compensation adds flexibility for the user to choose different type of output capacitors.

180° out-of-phase operation reduces the ripple current through the input capacitor, providing the benefit of reducing input capacitance, alleviating EMI and increasing capacitor life.

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類型 標題 日期
* Data sheet TPS5429x 1.5-A and 2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET datasheet (Rev. A) PDF | HTML 2016年 12月 29日
User guide TPS5429x Step-Down Converter Evaluation Module User's Guide (Rev. A) PDF | HTML 2021年 10月 13日
Selection guide Power Management Guide 2018 (Rev. R) 2018年 6月 25日
Application note Understanding Thermal Dissipation and Design of a Heatsink 2011年 5月 4日

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開發板

TPS54291EVM-431 — 12V 輸入、3.3V 1.5A 和 1.2V 以及 2.5A 雙路同步降壓轉換器評估模組

The TPS54291EVM-431 evaluation module (EVM) is a dual synchronous buck converter providing fixed3.3V and 1.2V outputs at up to 1.5A and 2.5A respectively from a 12V bus. The EVM is designed to start-up from a single supply, so no additional bias voltages are require for start-up. The module uses (...)
使用指南: PDF | HTML
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模擬型號

TPS54290 PSpice Average Model

SLUM424.ZIP (74 KB) - PSpice Model
模擬型號

TPS54290 TINA-TI Transient Reference Design

SLUM164.TSC (150 KB) - TINA-TI Reference Design
模擬型號

TPS54290 TINA-TI Transient Spice Model

SLUM165.ZIP (35 KB) - TINA-TI Spice Model
模擬型號

TPS54290 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM098A.ZIP (101 KB) - PSpice Model
封裝 針腳 CAD 符號、佔位空間與 3D 模型
HTSSOP (PWP) 16 Ultra Librarian

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