Datasheet > MP8020

MP8020

更新时间： 2024-10-02 17:02:07

品牌	Logo	应用领域
芯源 - MPS		/
页数	文件大小	规格书
27页	2401K
描述
兼容 802.3af/at/bt 的PoE 受电设备接口

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MP8020 数据手册

MP8020

IEEE 802.3af/at/bt-Compliant,

PoE, Powered Device Interface

DESCRIPTION

FEATURES

The MP8020 is an IEEE 802.3af/at/bt-

compliant, Power over Ethernet (PoE), powered

device (PD). The device supports all the

functions of IEEE 802.3af/at/bt, including

detection, 5-event classification, input current

(I_IN) control, and an internal 100V hot-swap

MOSFET.



Compliant with 802.3af/at/bt Specifications

Internal Detection Resistor

Supports Up to 71.3W Powered Device

(PD) Operation

Internal Hot-Swap MOSFET for ≤51W

Design

External MOSFET with GATE1 for >51W

Design



The MP8020 provides configurable inrush

current limiting during start-up and operation

current limiting when the internal MOSFET is

fully turned on. The GATE1 driver supports the



Auxiliary Power Supply from >8.8V Adapter

GATE2 N-Channel MOSFET Driver for

Adapter Supply

use of an external low on resistance (R_DS(ON)

)



Configurable Current Limit

MOSFET for high-power design. A high power

good (PG) signal enables the use of a

downstream DC/DC converter. The MP8020

also provides automatic maintain power

signature functionality under light loads.

Automatic Maintain Power Signature

PG and Allocated Power Type Indicators

150°C Over-Temperature Protection (OTP)

Available in a QFN-18 (3mmx5mm)

Package

An auxiliary power input detector (AUX) and

GATE2 driver provide a smooth power switch

from the power-sourcing equipment (PSE) to an

auxiliary wall adapter with low power loss. The

MP8020 also features a built-in detection

resistor, thermal protection, and a wide input

under-voltage lockout (UVLO) hysteresis.

APPLICATIONS



IEEE 802.3 af/at/bt-Compliant Devices

Security Cameras

Video and VoIP Phones

WLAN Access Points

Internet of Things (IoT) Devices

Pico Base Stations

The MP8020 is available in a QFN-18

(3mmx5mm) 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

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

TYPICAL APPLICATION

From

Adapter

PSE Start-Up

VADP GATE2 GATE1

AUX

V_OUT

SRC

CH2: V_DD

20V/div.

CH1: V_OUT

20V/div.

CH3: PG

20V/div.

SENSE

VDD

From

PSE

TYP1

TYP2

R_MPS

MP8020

PRI

CH4:

BT/TYP1/TYP2

20V/div.

CLSA

CLSB

DUTY

ILIM

GND

200ms/div.

MP8020 Rev. 1.0

2/17/2022

MonolithicPower.com

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

12 3 4 5 6 7...27

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与MP8020相关器件

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