TPS55386

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具有外部补偿的 4.5V 至 28V 输入、双通道 3A 输出、600kHz 降压转换器

产品详情

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Phase Interleaving Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 25.2 Iq (typ) (µA) 1800 Duty cycle (max) (%) 85
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 3 Vin (min) (V) 4.5 Vin (max) (V) 28 Switching frequency (min) (kHz) 600 Switching frequency (max) (kHz) 600 Features Enable, Phase Interleaving Control mode current mode Vout (min) (V) 0.8 Vout (max) (V) 25.2 Iq (typ) (µA) 1800 Duty cycle (max) (%) 85
HTSSOP (PWP) 16 32 mm² 5 x 6.4
  • 4.5-V to 28-V Input Range
  • Output Voltage 0.8 V to 90% of Input Voltage
  • Output Current Up to 3 A
  • Two Fixed Switching Frequency Versions:
    • TPS55383: 300 kHz
    • TPS55386: 600 kHz
  • Three Selectable Levels of Overcurrent Protection (Output 2)
  • 0.8-V 1.75% Voltage Reference
  • 2.1-ms Internal Soft Start
  • Dual PWM Outputs 180° Out-of-Phase
  • Ratiometric or Sequential Startup Modes
  • Configurable as Dual Output or Two-Channel Single Output Multiphase for 6 amp Capability
  • 85-Ω Internal High-Side MOSFETs
  • Current Mode Control with External Compensation
  • Pulse-by-Pulse Overcurrent Protection
  • Thermal Shutdown Protection at +148°C
  • 16-Pin PowerPAD HTSSOP package
  • APPLICATIONS
    • Set Top Box
    • Digital TV
    • Power for DSP
    • Consumer Electronics

PowerPAD Is a trademark of Texas Instruments.
All other trademarks are the property of their respective ownersPower.

  • 4.5-V to 28-V Input Range
  • Output Voltage 0.8 V to 90% of Input Voltage
  • Output Current Up to 3 A
  • Two Fixed Switching Frequency Versions:
    • TPS55383: 300 kHz
    • TPS55386: 600 kHz
  • Three Selectable Levels of Overcurrent Protection (Output 2)
  • 0.8-V 1.75% Voltage Reference
  • 2.1-ms Internal Soft Start
  • Dual PWM Outputs 180° Out-of-Phase
  • Ratiometric or Sequential Startup Modes
  • Configurable as Dual Output or Two-Channel Single Output Multiphase for 6 amp Capability
  • 85-Ω Internal High-Side MOSFETs
  • Current Mode Control with External Compensation
  • Pulse-by-Pulse Overcurrent Protection
  • Thermal Shutdown Protection at +148°C
  • 16-Pin PowerPAD HTSSOP package
  • APPLICATIONS
    • Set Top Box
    • Digital TV
    • Power for DSP
    • Consumer Electronics

PowerPAD Is a trademark of Texas Instruments.
All other trademarks are the property of their respective ownersPower.

The TPS55383 and TPS55386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With an internally-determined operating frequency and soft start time, these converters provide many features with a minimum of external components. The outputs of the two error amplifiers are accessible allowing user optimization of the feedback loop under a wide range of output filter characteristics. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs.

The outputs may be enabled independently, or configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources.

The TPS55383 and TPS55386 are dual output, non-synchronous buck converters capable of supporting 3-A output applications that operate from a 4.5-V to 28-V input supply voltage, and require output voltages between 0.8 V and 90% of the input voltage.

With an internally-determined operating frequency and soft start time, these converters provide many features with a minimum of external components. The outputs of the two error amplifiers are accessible allowing user optimization of the feedback loop under a wide range of output filter characteristics. Channel 1 overcurrent protection is set at 4.5 A, while Channel 2 overcurrent protection level is selected by connecting a pin to ground, to BP, or left floating. The setting levels are used to allow for scaling of external components for applications that do not need the full load capability of both outputs.

The outputs may be enabled independently, or configured to allow either ratiometric or sequential startup sequencing. Additionally, the two outputs may be powered from different sources.

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS5538X 3-A DUAL NON-SYNCHRONOUS CONVERTER WITH INTEGRATED HIGH-SIDE MOSFET 数据表 2008年 9月 26日
选择指南 电源管理指南 2018 (Rev. K) 2018年 7月 31日
选择指南 电源管理指南 2018 (Rev. R) 2018年 6月 25日
EVM 用户指南 Using the TPS55386EVM-363 A 12V Input 5.0V & 3.3V Output 3A Non-Sync Buck Conver 2008年 11月 7日

设计和开发

如需其他信息或资源,请点击以下任一标题进入详情页面查看(如有)。

评估板

TPS55386EVM-363 — TPS55386 13.2V 输入、3.3V 和 5V 双输出、3A 评估模块

TPS55383EVM-363 评估模块 (EVM) 是双路非同步降压转换器,它在高达 3A 的电流下提供 5.0V 和 3.3V 固定输出,每个输出都来自 12V 输入总线。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。该模块使用带有集成高侧 FET 的 TPS55386 600kHz 双路非同步降压转换器。TPS55386EVM-363 设计成使用 12V (+10% /-20%) 稳压总线来产生两个稳压电压轨(即 5.0V 和 3.3V),每个电压轨的负载电流都高达 3A。TPS55386EVM-363 旨在演示 TPS55386 在典型的 12V (...)

用户指南: PDF
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仿真模型

TPS55386 TINA-TI Average 3.3V Reference Design

SLUM048.ZIP (166 KB) - TINA-TI Reference Design
仿真模型

TPS55386 TINA-TI Average 5V Reference Design

SLUM049.ZIP (166 KB) - TINA-TI Reference Design
仿真模型

TPS55386 TINA-TI Average Spice Model

SLUM050.ZIP (4 KB) - TINA-TI Spice Model
仿真模型

TPS55386 TINA-TI Transient Reference Design

SLIM059.TSC (1033 KB) - TINA-TI Reference Design
仿真模型

TPS55386 TINA-TI Transient Spice Model

SLIM060.TSM (25 KB) - TINA-TI Spice Model
仿真模型

TPS55386 Unencrypted PSpice Average Model Package (Rev. A)

SLUM093A.ZIP (131 KB) - PSpice Model
仿真模型

TPS55386 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM112A.ZIP (141 KB) - PSpice Model
计算工具

SLVC184 TPS5538x Designer Rev 1.0

支持的产品和硬件

支持的产品和硬件

产品
AC/DC 和 DC/DC 转换器(集成 FET)
TPS55383 具有外部补偿的 4.5V 至 28V 输入、双路 3A 输出、300kHz 降压转换器 TPS55386 具有外部补偿的 4.5V 至 28V 输入、双通道 3A 输出、600kHz 降压转换器
封装 引脚 CAD 符号、封装和 3D 模型
HTSSOP (PWP) 16 Ultra Librarian

订购和质量

包含信息:
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息:
  • 制造厂地点
  • 封装厂地点

支持和培训

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