Datasheet > MAX5995D

MAX5995D

更新时间： 2024-10-04 02:51:03

品牌	Logo	应用领域
美信 - MAXIM		光电二极管
页数	文件大小	规格书
17页	867K
描述
IEEE 802.3af/at/bt-Compliant PD Interface Circuit

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MAX5995D 数据手册

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Evaluates: MAX5995A/B/C/MAX5974D

MAX5995B Evaluation Kit

General Description

Features

The MAX5995 evaluation kit (EV kit) is a fully assembled

and tested surface-mount circuit board featuring an

Ethernet port, network powered-device (PD) interface

controller circuit for -57V supply rail systems. The EV kit

● IEEE 802.3af/at/bt-Compliant PD Interface Circuit

● Multi-Event Classification 0-8

● -36V to -57V Input Range

● Demonstrates a 71W PD Design with Isolated Active-

uses the MAX5995B IEEE 802.3af/at/bt-compliant

Clamped Forward Topology DC-DC Converter

network PD interface controller in a 16-pin TQFN package

with an exposed pad. The IC is used in Power-over-

Ethernet (PoE) applications requiring DC power from

an Ethernet network port for PDs such as VoIP phones,

wireless access nodes, security cameras, lighting, and

building automation.

● +12V Output at 5.5A

● Startup Inrush Current Limit of 135mA (typ)

● Current Limit During Normal Operation

● Evaluates Endspan and Midspan Ethernet Systems

● Type 1-4 PSE Classification Indicator

● Simplified Wall Adapter Interface

The EV kit receives power from IEEE 802.3af/at/bt-

compliant power-sourcing equipment (PSE). Refer to

the MAX5952, MAX5965A/MAX5965B, and MAX5980

IC data sheets for PSE controllers. The PSE provides

the required -36V to -57V DC power over an unshielded

twisted-pair Ethernet network cable to the EV kit’s RJ45

magnetic jack. The EV kit features a 1 x 1 Gigabit RJ45

magnetic jack and two active full-wave rectiﬁers (N101

and N102) for separating the DC power provided by an

endspan or midspan Ethernet system.

● Demonstrates Sleep and Ultra-Sleep

Power-Saving Modes

● Proven PCB Layout

● Fully Assembled and Tested

Ordering Information appears at end of data sheet.

The EV kit can also be powered by a wall adapter power

source. The EV kit provides PCB pads to accept the

output of a wall adapter power source. When a wall

adapter power source is detected, it always takes

precedence over the PSE source and allows the wall

adapter to power the EV kit.

The EV kit demonstrates the full functionality of the

IC, such as PD detection signature, PD classiﬁcation

signature, Multi-Event Classiﬁcation (MEC), Intelligent

MPS, inrush current control, input undervoltage lockout

(UVLO), and DC-DC step-down converter. The step-down

converter operates at a ﬁxed 290kHz switching frequency

and is conﬁgured for an isolated active-clamped forward

topology with output voltage +12V DC that can deliver

5.5A of current.

IEEE is a registered service mark of the Institute of Electrical and Electronics Engineers, Inc.

Warning: The EV kit is designed to operate with high voltages. Dangerous voltages are present on this EV kit and on equipment

connected to it. Users who power up this EV kit or power the sources connected to it must be careful to follow safety procedures

appropriately to work with high-voltage electrical equipment.

Under severe fault or failure conditions, this EV kit may dissipate large amounts of power, which could result in the mechanical

ejection of a component or of component debris at high velocity. Operate this kit with care to avoid possible personal injury.

319-100275; Rev 0; 11/18

12 3 4 5 6 7...17

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与MAX5995D相关器件

型号	品牌	获取价格	描述	数据表
MAX5996A	ADI	获取价格	符合IEEE 802.3bt标准的受电设备，具有功率遥测和功率/电流限制
MAX5996B	ADI	获取价格	符合IEEE 802.3bt标准的受电设备，具有功率遥测和功率/电流限制
MAX5996C	ADI	获取价格	IEEE 802.3bt-Compliant, Powered Device with Power Telemetry and Power/Current Limit
MAX5K0000B	VISHAY	获取价格	MAX5K0000B 5 PPM
MAX5R0000B	VISHAY	获取价格	MAX5R0000B 5 PPM
MAX5X02EVKIT	MAXIM	获取价格	2.7V to 5.5V Wide Input Supply Range
MAX60	LITTELFUSE	获取价格	Use this 60 A MAXITM fuse as a replacement fo
MAX-60	MAXIM	获取价格	Fuse
MAX600	MAXIM	获取价格	AC To DC Regulator
MAX6001	MAXIM	获取价格	Low-Cost, Low-Power, Low-Dropout, SOT23-3 Voltage References

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