Datasheet > TGAD-290NARL

TGAD-290NARL

更新时间： 2024-09-13 07:18:43

品牌	Logo	应用领域
亚德诺 - ADI		稳压器开关
页数	文件大小	规格书
20页	713K
描述
Isolated Switching Regulator

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中文翻译

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数据手册

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TGAD-290NARL 数据手册

Isolated Switching Regulator

With Integrated Feedback

Data Sheet

ADuM3070

FEATURES

FUNCTIONAL BLOCK DIAGRAM

ISO

DD1

Isolated PWM feedback with built in compensation

Primary side transformer driver for up to 2.5 W output power

with 5 V input voltage

RECT

REG

ADuM3070

Regulated adjustable output: 3.3 V to 24 V

Up to 80% efficiency

200 kHz to 1 MHz adjustable oscillator

Soft start function at power-up

Pulse-by-pulse overcurrent protection

Thermal shutdown

DD2

REG

PRIMARY

CONVERTER/

DRIVER

DDA

SECONDARY

CONTROLLER

INTERNAL

FEEDBACK

GND

2500 V rms isolation

High common-mode transient immunity: >25 kV/µs

16-lead QSOP package

NOTES

1. V

2. V

IS THE POWER SUPPLY FOR THE PUSH-PULL TRANSFORMER.

IS THE POWER SUPPLY OF SIDE 1 OF THE ADuM3070.

DD1

DDA

Figure 1.

High temperature operation: 105°C

APPLICATIONS

Power supply startup bias and gate drives

Isolated sensor interfaces

Process controls

GENERAL DESCRIPTION

The ADuM3070¹isolator is a regulated dc-to-dc isolated power

supply controller with an internal MOSFET driver. The dc-to-

dc controller has an internal isolated PWM feedback from the

secondary side based on the iCoupler® chip scale transformer

technology and complete loop compensation. This eliminates

the need to use an optocoupler for feedback and compensates

the loop for stability.

The ADuM3070 isolator provides a more stable output voltage and

higher efficiency compared to unregulated isolated dc-to-dc power

supplies. The fully integrated feedback and loop compensation

in a small QSOP package provides a smaller form factor than any

discrete solution. The regulated feedback provides a relatively flat

efficiency curve over the full output power range. The ADuM3070

enables a dc-to-dc converter with a 3.3 V to 24 V isolated output

voltage range from either a 5.0 V or a 3.3 V input voltage, with

an output power of up to 2.5 W.

¹Protected by U.S. Patents 5,952,849; 6,873,065; and 7075 329 B2. Other patents are pending.

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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