Datasheet > APU3146

APU3146

更新时间： 2024-11-25 03:19:19

品牌	Logo	应用领域
富鼎先进 - A-POWER		控制器
页数	文件大小	规格书
28页	659K
描述
DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND AUTO-RESTART

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中文翻译

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APU3146 数据手册

Technology Licensed from International Rectifier

APU3146

DUAL SYNCHRONOUS PWM CONTROLLER WITH

CURRENT SHARING CIRCUITRYANDAUTO-RESTART

DESCRIPTION

FEATURES

The APU3146 IC combines a Dual synchronous Buck

Dual Synchronous Controller with 180ꢀ out-of-phase

Configurable to 2-Independent Outputs or 2-Phase

Single Output

controller, providing a cost-effective, high performance

and flexible solution. The APU3146 can configured as 2-

independent or as 2-phase controller. The 2-phase con-

figuration is ideal for high current applications. The

APU3146 features 180ꢀ out of phase operation which re-

duces the required input/output capacitance and results

to few number of capacitor quantity. Other key features

offered by this device include two independent program-

mable soft starts, programmable switching frequency up

to 500KHz per phase, under voltage lockout function.

The current limit is provided by sensing the lower

MOSFET's on-resistance for optimum cost and perfor-

mance.

Current Sharing Using Inductor's DCR

Current Limit using MOSFET's R^DS(ON)

Hiccup/Latched Current Limit

Latched Over-Voltage Protection

Vcc from 4.5V to 16V Input

Programmable Switching Frequency up to 500KHz

Two Independent Soft-Starts/ Shutdowns

0.8V Precision Reference VoltageAvailable

Power Good Output

External Frequency Synchronization

APPLICATIONS

Embedded Computer Systems

Telecom Systems

2-Phase Power Supply

Graphic Card

DDR Memory Applications

Point of Load Power Architectures

C12

12V

C11

C13

C14

CL VcH1

VcH2

VOUT3

HDrv1

Vcc

OCSet1

LDrv1

Hiccup

Sync

1.8V @ 30A

C16

PGnd1

VP2

C15

R10

R11

VREF

BAT54A

APU3146 ^V

SEN1

SEN2

Fb1

Fb2

Comp1

C17

C18

Comp2

HDrv2

OCSet2

PGood

LDrv2

SS1 / SD

SS2 / SD

PGnd2

Gnd

C10

Figure 1 - Typical application of APU3146 in 2-phase configuration with inductor current sensing

PACKAGE ORDER INFORMATION

DEVICE

PACKAGE

APU3146O(/M)

28-Pin TSSOP(/SOIC WB)

200407061-1/28

Data and specifications subject to change without notice.

12 3 4 5 6 7...28

中文翻译

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