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TPS54292

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4.5V 至 18V 输入、1.2MHz、1.5/2.5A 双通道同步降压转换器

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TPS54292

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产品详情

Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 14 Vout (min) (V) 0.8 Features Enable, Phase Interleaving, Synchronous Rectification Control mode current mode Operating temperature range (°C) -40 to 145 Iq (typ) (A) 0.0018 Duty cycle (max) (%) 78
Rating Catalog Topology Buck Iout (max) (A) 2.5 Vin (max) (V) 18 Vin (min) (V) 4.5 Vout (max) (V) 14 Vout (min) (V) 0.8 Features Enable, Phase Interleaving, Synchronous Rectification Control mode current mode Operating temperature range (°C) -40 to 145 Iq (typ) (A) 0.0018 Duty cycle (max) (%) 78
HTSSOP (PWP) 16 32 mm² (5 mm × 6.4 mm)
  • 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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顶层文档 类型 标题 格式选项 下载最新的英语版本 日期
* 数据表 TPS5429x 1.5-A and 2.5-A Dual, Fully-Synchronous Buck Converter With Integrated MOSFET 数据表 (Rev. A) PDF | HTML 2016-12-29
选择指南 电源管理指南 2018 2018-7-31
应用手册 Understanding Thermal Dissipation and Design of a Heatsink 2011-5-4

设计与开发

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评估板

TPS54291EVM-431 — 12V 输入、3.3V 1.5A 和 1.2V 以及 2.5A 双路同步降压转换器评估模块

TPS54291EVM-431 评估模块 (EVM) 是双路同步降压转换器，可从 12V 总线提供 3.3V 和 1.2V 固定输出，电流分别高达 1.5A 和 2.5A。该 EVM 设计成从单电源启动，因此无需额外偏置电压即可启动。该模块使用具有集成 MOSET 的 TPS54291 600kHz 双路同步降压转换器。TPS54291EVM-431 设计成使用 12V (+10% /–20%) 稳压总线来产生两个稳压电压轨（在 1.5A 时为 3.3V 并且在 2.5A 时为 1.2V）。TPS54291EVM-431 旨在演示 TPS54291 在典型的 12V (...)
用户指南: PDF | HTML
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仿真模型

TPS54292 TINA-TI Transient Reference Design

SLUM160.TSC (152 KB) - TINA-TI 参考设计
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仿真模型

TPS54292 TINA-TI Transient Spice Model

SLUM161.ZIP (34 KB) - TINA-TI Spice 模型
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仿真模型

TPS54292 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM099A.ZIP (93 KB) - PSpice 模型
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封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 16 Ultra Librarian
适用于评估类项目的 TI 标准条款与条件。

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