Datasheet > ETA8051

ETA8051

更新时间： 2024-04-09 19:00:00

品牌	Logo	应用领域
钰泰 - ETA		/
页数	文件大小	规格书
11页	616K
描述
内置功率管 PWM 芯片

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ETA8051 数据手册

ETA8051

Integrated HV Power MOSFET Quasi-Resonant PWM Controller

for Fly-Back Converters

DESCRIPTION

FEATURES

ETA8051 is a high performance peak current mode PWM

controller. It integrates a 1.3Ω/700V high reliability and high

stability N-channel Power Mosfet. ETA8051 employs Quasi-

Resonant and frequency fold-back technique to reduce EMI

and improve average efficiency and meets the latest Level

VI efficiency standard with enough margins.

 Integrated 1.3Ω/700V high voltage N-channel

Power Mosfet

 Quasi-Resonant and CCM Operation

 7-37V VCC Widely Operation Voltage Range

 Built-in Adjustable Line Compensation

 Current Sense Resistor Short Protection

ETA8051 is a multi-mode QR/CCM controller. In full load

conditions, ETA8051 can work in both CCM mode and DCM

mode to meet different types of applications. Quasi-  Transformer Winding Short Protection

Resonant (QR) function works all the time in DCM modes.

Its burst mode operation enables low standby power with

small output voltage ripple. And it achieves very low standby

 Integrates Comprehensive Protection

 Built-in Soft-Start and Fast-Start Circuit

 Very Low Standby Power Consumption

 Complies with DOE VI and CEC V5 Average

Efficiency Standards

power, good dynamic response and accurate voltage

regulation with an opto-coupler and the secondary side

control circuit.

With build-in fast start process, ETA8051 can get output

voltage very short rise time even with a big capacitive load.

And a soft start circuit keeps output voltage no overshoot at

power up.

 Standard SOP-7 Package

ETA8051 integrates comprehensive protection. In case of

over temperature, input/output over voltage, winding short,

APPLICATIONS

current sense resistor short, over load and over current and  Smart Power Meters

output short conditions, it would enter into auto restart if

recovering from fault mode. Cycle-by-Cycle current limiting

ensures safe operation even during fault mode and

recovering.

 Conventional Adapter

 System Standby Powers

 Replacements for linear transformers and

ETA8051 is for applications up to 15 Watts.

RCC SMPS

TYPICAL APPLICATION

Cssn Rssn

HV+

DC Output

Csn

Rsn

Rstart

Co1

Co2

Dsn

Transformer

Dvcc

Rvcc

Rfb1

Ropto

Rvd1

VCC

DRAIN 5,6

OPTO-A

ETA8051

SOP-7

Cvcc

Ccomp

GND

OPTO-B

TL431

Rfb2

Rvd2

Rcs

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