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TPS51220

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适用于笔记本电脑电源的 3V 至 28V 同步峰值电流模式降压控制器

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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.

TPS51220

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产品详情

Vin (min) (V) 4.5 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode D-CAP, current mode Topology Buck Rating Catalog Vout (min) (V) 1 Vout (max) (V) 12 Features Enable, Frequency synchronization, Light Load Efficiency, Phase Interleaving, Power good, Synchronous Rectification Iq (typ) (µA) 1300 Duty cycle (max) (%) 99 Number of phases 1
Vin (min) (V) 4.5 Vin (max) (V) 28 Iout (max) (A) 20 Operating temperature range (°C) -40 to 85 Control mode D-CAP, current mode Topology Buck Rating Catalog Vout (min) (V) 1 Vout (max) (V) 12 Features Enable, Frequency synchronization, Light Load Efficiency, Phase Interleaving, Power good, Synchronous Rectification Iq (typ) (µA) 1300 Duty cycle (max) (%) 99 Number of phases 1
VQFN (RHB) 32 25 mm² 5 x 5
  • Input Voltage Range: 4.5 V to 28 V
  • Output Voltage Range: 1 V to 12 V
  • Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio Skip)
  • Programmable Droop Compensation
  • Voltage Servo Adjustable Soft Start
  • 200 kHz to 1 MHz Fixed Frequency PWM
  • Selectable Current/D-CAP Mode Architecture
  • 180° Phase Shift Between Channels
  • Resistor or Inductor DCR Current Sensing
  • Powergood Output for Each Channel
  • OCL/OVP/UVP/UVLO Protections (OVP Disable Option)
  • Thermal Shutdown (Non-Latch)
  • Output Discharge Function (Disable Option)
  • Integrated Boot Strap MOSFET Switch
  • QFN-32 (RHB)
  • APPLICATIONS
    • Notebook Computer System and I/O Bus
    • Point of Load in LCD TV, MFP
  • Input Voltage Range: 4.5 V to 28 V
  • Output Voltage Range: 1 V to 12 V
  • Selectable Light Load Operation (Continuous / Auto Skip / Out-Of-Audio Skip)
  • Programmable Droop Compensation
  • Voltage Servo Adjustable Soft Start
  • 200 kHz to 1 MHz Fixed Frequency PWM
  • Selectable Current/D-CAP Mode Architecture
  • 180° Phase Shift Between Channels
  • Resistor or Inductor DCR Current Sensing
  • Powergood Output for Each Channel
  • OCL/OVP/UVP/UVLO Protections (OVP Disable Option)
  • Thermal Shutdown (Non-Latch)
  • Output Discharge Function (Disable Option)
  • Integrated Boot Strap MOSFET Switch
  • QFN-32 (RHB)
  • APPLICATIONS
    • Notebook Computer System and I/O Bus
    • Point of Load in LCD TV, MFP

The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 28 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out of phase. The TPS51220 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220 is available in the 32 pin 5x5 QFN package and is specified from -40°C to 85°C.

The TPS51220 is a dual synchronous buck regulator controller with 2 LDOs. It is optimized for 5-V/3.3-V system controller, enabling designers to cost effectively complete 2-cell to 4-cell notebook system power supply. The TPS51220 supports high efficiency, fast transient response and 99% duty cycle operation. It supports supply input voltage ranging from 4.5 V to 28 V, and output voltages from 1 V to 12 V. Two types of control schemes can be chosen depending on the application. Peak current mode supports stability operation with lower ESR capacitor and output accuracy. The D-CAP mode supports fast transient response. The high duty (99%) operation and the wide input/output voltage range supports flexible design for small mobile PCs and a wide variety of other applications. The fixed frequency can be adjusted from 200 kHz to 1 MHz by a resistor, and each channel runs 180° out of phase. The TPS51220 can also synchronize to the external clock, and the interleaving ratio can be adjusted by its duty. The TPS51220 is available in the 32 pin 5x5 QFN package and is specified from -40°C to 85°C.
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类型 标题 下载最新的英语版本 日期
* 数据表 Fixed Frequency 99% Duty Cycle Peak Current Mode Notebook System Pwr Controlle 数据表 (Rev. C) 2009年 7月 3日
用户指南 TPS51220 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 12日
应用手册 Mosfet Driver Circuit Design Guide for TPS512xx (Rev. A) 2019年 4月 1日
应用手册 Independent Rail Dual Buck Converter using TPS51220 2013年 11月 22日
应用手册 Intel Core i3，i5，i7 [Arrandale] 参考设计 英语版 2010年 10月 8日

设计和开发

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评估板

TPS51220EVM — 使用 TPS51220 评估模块的 TPS51220EVM 高性能同步降压

TPS51220 是一款具有三个低压降 (LDO) 稳压器的双峰值电流模式、同步降压控制器。它针对 5V/3.3V 笔记本系统电源进行了优化。99% 的工作占空比使设计者能够经济高效地完成 2 节到 4 节的锂离子电池应用。TPS51220 支持高效、快速瞬态响应和 99% 的工作占空比。DCR 电流感应提供了无损电流感应和自由的 MOSFET 选择；电阻感应支持精确的电流感应操作。它支持 4.5V 到 30V 的电源输入电压和 1V 到 12V 的输出电压。大电流、5V @ 100A、3.3V @ 10A、板载线性稳压器具有与 SMPS 的无假信号切换功能，并且 2V 基准具有 100mA (...)

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

TPS51220(A) Unencrypted PSpice Average Model Package (Rev. A)

SLIM157A.ZIP (102 KB) - PSpice Model
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封装 引脚 CAD 符号、封装和 3D 模型
VQFN (RHB) 32 Ultra Librarian
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  • 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
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