Datasheet > TPS5120QDBTRQ1G4

TPS5120QDBTRQ1G4

更新时间： 2024-11-24 11:08:07

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
21页	325K
描述
汽车类 4.5V 至 28V 双路两相同步降压控制器 \| DBT \| 30 \| -40 to 125

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TPS5120QDBTRQ1G4 数据手册

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SGLS225B − JANUARY 2004 − REVISED APRIL 2008

Qualified for Automotive Applications

Sequencing Easily Achieved by Selecting

Softstart Capacitor Values.

Independent Dual-Outputs Operate 180°

Out of Phase

5-V Linear Regulator Power Internal IC

Circuitry

Wide Input Voltage Range: 4.5-V − 28-V

30-Pin TSSOP Packaging

Adjustable Output Voltage Down to 0.9 V

Gate Leakage Test Passing Level is 50 V

Pin-Selectable PWM/SKIP Mode for High

Efficiency Under Light Loads

DBT PACKAGE

(TOP VIEW)

Synchronous Buck Operation Allows up to

95% Efficiency

INV1

FB1

LH1

OUT1_u

LL1

OUT1_d

OUTGND1

TRIP1

Separate Standby Control and Overcurrent

Protection For Each Channel

SOFTSTART1

PWM/SKIP

Programmable Short-Circuit Protection

Low Supply (1 mA) and Shutdown (1 nA)

Current

5V_STBY

GND

Power Good Output

REF

STBY1

STBY2

TRIP2

VREF5

REG5V_IN

OUTGND2

OUT2_d

LL2

High-Speed Error Amplifiers

FLT

POWERGOOD

SOFTSTART2

FB2

description

OUT2_u

LH2

The TPS5120 is a dual channel, high-efficiency

synchronous buck controller where the outputs

run 180 degrees out of phase, which lowers the

INV2

input current ripple, thereby reducing the input capacitance cost. The PWM/SKIP pin allows the operating mode

to switch from PWM mode to skip mode under light load conditions. The skip mode enables a lower operating

frequency and shortens the pulse width to the low-side MOSFET, increasing the efficiency under light load

conditions. These two modes, along with synchronous-rectifier drivers, dead time, and very low quiescent

current, allow power to be conserved and the battery life to be extended under all load conditions. The 1.5 A

(typical) high-side and low-side MOSFET drivers on-chip are designed to drive less expensive N-channel

MOSFETs. The resistorless current protection and fixed high-side driver voltage simplify the power supply

design and reduce the external parts count. Each channel is independent, offering a separate controller,

overcurrent protection, and standby control. Sequencing is flexible and can be tailored by choosing different

softstart capacitor values. Other features, such as undervoltage lockout, power good, overvoltage,

undervoltage, and programmable short-circuit protection promote system reliability.

ORDERING INFORMATION{

PACKAGE}

TSSOP

(DBT)

−40°C to 125°C

TPS5120QDBTRQ1

†

‡

For the most current package and ordering

information, see the Package Option

Addendum at the end of this document, or

see the TI web site at http://www.ti.com.

Package drawings, thermal data, and

symbolization

are

available

http://www.ti.com/packaging.

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.

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POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

12 3 4 5 6 7...21

中文翻译

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TPS5120QDBTRQ1G4 替代型号

型号	品牌	替代类型	描述	数据表
TPS5120QDBTREP	TI	完全替代	DUAL OUTPUT, TWO-PHASE SYNCHRONOUS BUCK DC/DC CONTROLLER

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