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TPS51120

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具有低待机电流消耗的 4.5V 至 28V 双通道同步降压控制器

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TPS51397A 正在供货 4.5V 至 24V 输入、10A 同步降压稳压器 Offers a lower IQ and is soft start adjustable with an extended positive operating temperature range in a smaller package.

产品详情

Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 1 Vout (max) (V) 5.5 Iout (max) (A) 20 Iq (typ) (mA) 0.75 Switching frequency (min) (kHz) 180 Switching frequency (max) (kHz) 500 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 2 Number of phases 1 Rating Catalog Control mode D-CAP, current mode Type Controller
Vin (min) (V) 4.5 Vin (max) (V) 28 Vout (min) (V) 1 Vout (max) (V) 5.5 Iout (max) (A) 20 Iq (typ) (mA) 0.75 Switching frequency (min) (kHz) 180 Switching frequency (max) (kHz) 500 Features Enable, Light Load Efficiency, Power good, Synchronous Rectification Operating temperature range (°C) -40 to 85 Regulated outputs (#) 2 Number of phases 1 Rating Catalog Control mode D-CAP, current mode Type Controller
VQFN (RHB) 32 25 mm² 5 x 5
  • 3.3-V and 5-V 100-mA Bootstrapped Standby
    Regulators with Independent Enables
  • Selectable D-CAP™ Mode Enables Fast Transient
    Response Less than 100 ns
  • Selectable Low Ripple Current Mode
  • Less than 1% Internal Reference Accuracy
  • Selectable PWM-only/Auto-skip Modes
  • Low-side RDS(on) Loss-less Current Sensing
  • RSENSE Accurate Current Sense Option
  • Internal Soft-Start and Integrated VOUT Discharge
    Transistors
  • Integrated 2-V Reference
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Powergood for Each Channel with Delay Timer
  • Fault Disable Mode
  • Supply Input Voltage Range: 4.5 V to 28 V
  • 3.3-V and 5-V 100-mA Bootstrapped Standby
    Regulators with Independent Enables
  • Selectable D-CAP™ Mode Enables Fast Transient
    Response Less than 100 ns
  • Selectable Low Ripple Current Mode
  • Less than 1% Internal Reference Accuracy
  • Selectable PWM-only/Auto-skip Modes
  • Low-side RDS(on) Loss-less Current Sensing
  • RSENSE Accurate Current Sense Option
  • Internal Soft-Start and Integrated VOUT Discharge
    Transistors
  • Integrated 2-V Reference
  • Adaptive Gate Drivers with Integrated Boost Diode
  • Powergood for Each Channel with Delay Timer
  • Fault Disable Mode
  • Supply Input Voltage Range: 4.5 V to 28 V

The TPS51120 is a highly sophisticated dual, synchronous step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High-current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5-V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.

The TPS51120 32-pin QFN package is specified from –40°C to 85°C ambient temperature.

The TPS51120 is a highly sophisticated dual, synchronous step-down controller. It is a full featured controller designed to run directly off a three- or four-cell Li-ion battery and provide high-power and 5-V and/or 3.3-V standby regulation for all the downstream circuitry in a notebook computer system. High-current, 100-mA, 5-V or 3.3-V on-board linear regulators have glitch-free switch over function to SMPS and can be kept alive independently during standby state. The pseudo-constant frequency adaptive on-time control scheme supports full range of current mode operation including simplified loop compensation, ceramic output capacitors as well as seamless transition to reduced frequency operation at light-load condition. Optional D-CAP mode operation optimized for SP-CAP or POSCAP output capacitors allows further reduction of external compensation parts. Dynamic UVP supports VIN line sag without latch off by hitting 5-V UVP. No negative voltage appears at output voltage node during UVLO, UVP, and OCP, OTP or loss of VIN.

The TPS51120 32-pin QFN package is specified from –40°C to 85°C ambient temperature.

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类型 标题 下载最新的英语版本 日期
* 数据表 TPS51120 Dual, Synchronous Step-Down Controller With 100-mA Standby Regulators for Notebook System Power 数据表 (Rev. C) PDF | HTML 2015年 1月 29日
用户指南 TPS51120 降压控制器评估模块用户指南 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2022年 7月 20日
应用手册 Intel Atom Z5xx [Menlow] 参考设计 2010年 10月 8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

TPS51120EVM-001 — TPS51120 评估模块

The TPS51120EVM-001 evaluation module utilizes the TPS51120 in a high efficiency, dual synchronous buck converter providing 5 V at 6 A and 3.3 V at 6 A from 8 V to 25 V input. The user’s guide describes the TPS51120EVM-001 performance in D-CAP™ mode and RDS(on) current sensing.

The TPS51120 is a (...)

用户指南: PDF | HTML
英语版 (Rev.B): PDF | HTML
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仿真模型

TPS51120 PSpice Transient Model

SLIM108.ZIP (79 KB) - PSpice Model
仿真模型

TPS51120 TINA-TI (Transient) Reference Design

SLVM104.TSC (318 KB) - TINA-TI Reference Design
仿真模型

TPS51120 TINA-TI (Transient) Spice Model

SLVM103.ZIP (83 KB) - TINA-TI Spice Model
模拟工具

PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®

PSpice® for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence® 的模拟分析引擎。PSpice for TI 可免费使用,包括业内超大的模型库之一,涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。

在 PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)
参考设计

PMP1967 — 同步降压转换器 (5V@5A)

This reference evaluation module, featuring the TPS51120, achieves low stand-by current high efficiency solution for PC I/O rails.
测试报告: PDF
原理图: PDF
封装 引脚 下载
VQFN (RHB) 32 查看选项

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

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