Datasheet > LM5122

LM5122

更新时间： 2024-11-23 12:02:39

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
43页	1765K
描述
Wide Input Synchronous Boost Controller with Multiple Phase Capability

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LM5122 数据手册

LM5122/LM5122-Q1

www.ti.com

SNVS954C –APRIL 2013–REVISED MAY 2013

Wide Input Synchronous Boost Controller with Multiple Phase Capability

Check for Samples: LM5122/LM5122-Q1

FEATURES

APPLICATIONS

•

Available in AEC-Q100 (LM5122-Q1)

Maximum Input Voltage : 65 V

•

12 V, 24 V, and 48 V Power Systems

Automotive Start-Stop

Min Input Voltage : 3.0 V (4.5 V for startup)

Output Voltage up to 100 V

Audio Power Supply

High Current Boost Power Supply

Bypass (V_OUT= V_IN) Operation

DESCRIPTION

The LM5122 is a multiphase capable synchronous

boost

synchronous boost regulator applications. The control

method is based upon peak current mode control.

Current mode control provides inherent line feed-

forward, cycle-by-cycle current limiting and ease of

loop compensation.

1.2 V Reference with ±1.0% Accuracy

Free-Run/Synchronizable Switching to 1 MHz

Peak Current Mode Control

controller

intended

for

high-efficiency

Robust 3 A Integrated Gate Drivers

Adaptive Dead-Time Control

Optional Diode Emulation Mode

Programmable Cycle-by-Cycle Current Limit

Hiccup Mode Overload Protection

Programmable Line UVLO

The switching frequency is programmable up to 1

MHz. Higher efficiency is achieved by two robust N-

channel MOSFET gate drivers with adaptive dead-

time control. A user-selectable diode emulation mode

also enables discontinuous mode operation for

improved efficiency at light load conditions.

Programmable Soft-Start

Thermal Shutdown Protection

Low Shutdown Quiescent Current: 9 μA

Programmable Slope Compensation

An internal charge pump allows 100% duty cycle for

high-side synchronous switch (Bypass operation). A

180º phase shifted clock output enables easy multi-

phase interleaved configuration. Additional features

include thermal shutdown, frequency synchronization,

hiccup mode current limit and adjustable line

undervoltage lockout.

Programmable Skip Cycle Mode Reduces

Standby Power

•

Allows External VCC Supply

Inductor DCR Current Sensing Capability

Multiphase Capability

Thermally Enhanced 20-Pin HTSSOP

SIMPLIFIED APPLICATION DIAGRAM

OUT

VCC BST

CSN

COMP

CSP

VIN

UVLO

RES

SLOPE

SYNCIN/RT

SYNCOUT

MODE

PGND

AGND

OPT

LM5122

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.

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...43

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LM5122 替代型号

型号	品牌	替代类型	描述	数据表
LM5022	TI	功能相似	6V 至 60V 宽输入电压、电流模式升压、SEPIC 和反激式控制器
LM5121	TI	功能相似	Wide Input Synchronous Boost Controller with Disconnection Switch Control

与LM5122相关器件

型号	品牌	获取价格	描述	数据表
LM5122MH/NOPB	TI	获取价格	Wide Input Synchronous Boost Controller with Multiple Phase Capability
LM5122MHE/NOPB	TI	获取价格	具有多相功能的 3-65V 宽输入电压、电流模式同步升压控制器 \| PWP \| 20 \|
LM5122MHX/NOPB	TI	获取价格	Wide Input Synchronous Boost Controller with Multiple Phase Capability
LM5122-Q1	TI	获取价格	Wide Input Synchronous Boost Controller with Multiple Phase Capability
LM5122QMH/NOPB	TI	获取价格	Wide Input Synchronous Boost Controller with Multiple Phase Capability
LM5122QMHE/NOPB	TI	获取价格	具有多相位的汽车类 3V 至 65V 宽输入电压、电流模式同步升压控制器 \| PWP \|
LM5122QMHX/NOPB	TI	获取价格	Wide Input Synchronous Boost Controller with Multiple Phase Capability
LM5122ZA	TI	获取价格	具有多相功能的 3V 至 65V 宽输入电压、电流模式同步升压控制器
LM5122ZAPWPR	TI	获取价格	具有多相功能的 3V 至 65V 宽输入电压、电流模式同步升压控制器 \| PWP \| 24
LM5122ZAPWPT	TI	获取价格	具有多相功能的 3V 至 65V 宽输入电压、电流模式同步升压控制器 \| PWP \| 24

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