Datasheet > MP4581

MP4581

更新时间： 2024-04-09 19:02:52

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
19页	1523K
描述
100V、0.8A?同步降压变换器?

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MP4581 数据手册

MP4581

100V, 0.8A, High-Efficiency,

Synchronous, Step-Down Buck Converter

with Integrated Power MOSFETS

DESCRIPTION

FEATURES

The MP4581 is a high-efficiency, synchronous

step-down converter with integrated power

MOSFETs. It provides 0.8A of output current

(I_OUT) in a buck topology from an input power

supply of up to 100V.



8V to 100V Input Voltage Range

1V to 30V Output Voltage Range

90% Maximum Operation Duty Cycle

625mΩ/265mΩ Internal Power MOSFETs

Constant-On-Time (COT) Control

100kHz to 1MHz Configurable Frequency

Internal Soft Start and Loop Compensation

Over-Current Protection (OCP)

Short-Circuit Protection (SCP) with Hiccup

Mode

High-Efficiency Pulse-Skip Mode (PSM)

under Light-Load Conditions

The MP4581 features constant-on-time (COT)

control, which provides fast transient response

and

facilitates

loop

stabilization.

The

configurable operation frequency can be set

between 100kHz to 1MHz via an external

resistor.



The MP4581 supports high-efficiency pulse-skip

mode (PSM) while operating under light-load

conditions. The valley current limit circuits

protect against overload and short-circuit

conditions.

Available in an SOIC-8EP Package

APPLICATIONS



High-Voltage Battery Packs

Industrial Power Supplies

Printer Power Boards

The MP4581 is available in an SOIC-8EP

package.

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality

Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

registered trademarks of Monolithic Power Systems, Inc. or its subsidiaries.

TYPICAL APPLICATION

Efficiency

V_OUT= 5V

100

V_IN

BST

8V to 100V

VIN

0.1μF

V_OUT

5V/0.8A

2.2μF

33μH

10μF x 2

MP4581

680pF

40.2kΩ

VCC

1μF

FREQ

10kΩ

80.6kΩ

Vin=12V

GND

Vin=48V

Vin=72V

0.2

0.4

0.6

0.8

OUTPUT CURRENT (A)

MP4581 Rev. 1.0

1/13/2021

www.MonolithicPower.com

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

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