Datasheet > TPS51220A-Q1

TPS51220A-Q1

更新时间： 2024-11-23 12:16:15

品牌	Logo	应用领域
德州仪器 - TI		功率控制控制器
页数	文件大小	规格书
50页	1072K
描述
Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

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TPS51220A-Q1 数据手册

TPS51220A-Q1

www.ti.com

SLUSAI2 –MARCH 2011

Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

Check for Samples: TPS51220A-Q1

FEATURES

•

Qualified for Automotive Applications

Input Voltage Range: 4.5 V to 32 V

Output Voltage Range: 1 V to 12 V

•

Powergood Output for Each Channel

•

OCL/OVP/UVP/UVLO Protections

(OVP Disable Option)

•

Thermal Shutdown (Non-Latch)

Selectable Light Load Operation

(Continuous / Auto Skip / Out-Of-Audio™ Skip)

Output Discharge Function (Disable Option)

Latch-Up exceeds 100mA per JESD78- Class I

Integrated Boot Strap MOSFET Switch

QFN-32 (RTV) Package

•

Programmable Droop Compensation

Voltage Servo Adjustable Soft Start

200-kHz to 1-MHz Fixed-Frequency PWM

Selectable Current/ D-CAP™ Mode

Architecture

APPLICATIONS

•

I/O Bus

•

180° Phase Shift Between Channels

Resistor or Inductor DCR Current Sensing

Adaptive Zero Crossing Circuit

•

Point of Load in LCD TV, MFP

DESCRIPTION

The TPS51220A-Q1 is a dual synchronous buck regulator controller with two 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 TPS51220A-Q1 supports high efficiency, fast transient response, and 99% duty cycle operation. It supports

supply input voltage ranging from 4.5 V to 32 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 TPS51220A-Q1 can also synchronize to the external clock, and the

interleaving ratio can be adjusted by its duty. The TPS51220A-Q1 is available in the 32-pin 5×5/4×4 QFN

package and is specified from –40°C to 105°C.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Out-Of-Audio, D-CAP, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...50

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与TPS51220A-Q1相关器件

型号	品牌	获取价格	描述	数据表
TPS51220ARSNR	TI	获取价格	采用 RSN/RTV 封装的适用于笔记本电脑电源的 3V 至 28V 同步峰值电流模式降压
TPS51220ARSNT	TI	获取价格	Fixed-frequency, 99% duty cycle peak current-mode notebook system power controller 32-QFN
TPS51220ARTVR	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220ARTVT	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220ATRTVRQ1	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220RHBR	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220RHBT	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51220RHBTG4	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller 32-VQFN
TPS51221	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller
TPS51221RTVR	TI	获取价格	Fixed Frequency, 99% Duty Cycle Peak Current Mode Notebook System Power Controller

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