Datasheet > ADPL54203

ADPL54203

更新时间： 2024-04-09 19:02:10

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
34页	919K
描述
40VIN Micropower No-Opto Isolated Flyback Converter with 60V/3.4A Switch

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ADPL54203 数据手册

Data Sheet

ADPL54203

40V_INMicropower No-Opto Isolated Flyback Converter with 60V/3.4A Switch

GENERAL DESCRIPTION

FEATURES

The ADPL54203 operates from an input voltage range



3.4A, 60V Internal DMOS Power Switch

3.2V to 40V Input Voltage Range

No Transformer Third Winding or Opto-Isolator

Required for Output Voltage Regulation

Quasi-Resonant Boundary Mode Operation at

Heavy Load

Low Ripple Burst Mode® Operation at Light

Load

Low Quiescent Current

of 3.2V to 40V and delivers up to 17W of isolated

output power. It is a monolithic micropower isolated

flyback converter. By sampling the isolated output

voltage directly from the primary-side flyback

waveform, the part requires no third winding or opto-

isolator for regulation. The output voltage is

programmed with two external resistors and a third

optional temperature compensation resistor.

Boundary mode operation provides a small magnetic

solution with excellent load regulation. Low ripple

Burst Mode operation maintains high efficiency at

light load while minimizing the output voltage ripple.



115µA in Sleep Mode



390µA in Active Mode



Minimum Load < 0.5% (Typ) of Full Output

Temperature Compensation for Output Diode

Internal Compensation and Soft-Start

Output Short-Circuit Protection

Accurate EN/UVLO Threshold and Hysteresis

Thermally Enhanced 8-Lead SO Package

A 3.4A, 60V DMOS power switch is integrated along

with all the high voltage circuitry and control logic

into a thermally enhanced 8-lead SO package. The

high level of integration and the use of boundary and

low ripple burst modes result in a simple to use, low

component count, and high efficiency application

solution for isolated power delivery.

APPLICATIONS



Isolated Auxiliary/Housekeeping Power Supplies



Isolated Industrial, Medical Power Supplies

All registered trademarks and trademarks are the property of their respective owners. Protected

by U.S. patents, including 5438499, 7463497, 7471522.

SIMPLIFIED APPLICATION DIAGRAM

OUT

4V TO 30V

3:1

470pF

•

220µF

9µH

1µH

39Ω

•

10µF

–

EN/UVLO

OUT

ADPL54203

154kΩ

10kΩ

10mA TO 1.1A (V = 5V)

10mA TO 2.0A (V = 12V)

10mA TO 2.9A (V = 24V)

GND

INTV

REF

= 5V

= 12V

= 24V

1µF

115kΩ

2.0

LOAD CURRENT (A)

3.0

0.5

1.0

1.5

2.5

Figure 1. 4V to 30V_IN/5V_OUTIsolated Flyback Converter

Figure 2. Efficiency vs. Load Current

DOCUMENT FEEDBACK

TECHNICAL SUPPORT

Rev. 0

One Analo g Wa y, Wi lm i ngto n, MA 01887 - 2356, U . S . A.

T el: 7 8 1. 3 29 . 47 0 0

12 3 4 5 6 7...34

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