Datasheet > HD6412352TE

HD6412352TE

更新时间： 2024-09-21 23:55:15

品牌	Logo	应用领域
其他 - ETC		微控制器
页数	文件大小	规格书
24页	464K
描述
Microcontroller

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

HD6412352TE 数据手册

19-3024; Rev 0; 10/03

IEEE 802.3af Power-Over-Ethernet

Interface/PWM Controller for Power Devices

General Description

Features

The MAX5942A/MAX5942B integrate a complete power

IC for powered devices (PD) in a power-over-ethernet

(PoE) system. The MAX5942A/MAX5942B provide a PD

interface and a compact DC-DC PWM controller suitable

for flyback and forward converters in either isolated or

nonisolated designs.

o Powered Device Interface

Fully Integrated IEEE 802.3af-Compliant PD

Interface

PD Detection and Programmable Classification

Signatures

Less than 10µA Leakage Current Offset During

Detection

Integrated MOSFET for Isolation and Inrush

Current Limiting

Gate Output Allows External Control of the

Internal Isolation FET

Programmable Inrush Current Control/ULVO

PGOOD/PGOOD Outputs Enable PWM

Controller

The MAX5942A/MAX5942B PD interface complies with

the IEEE 802.3af standard, providing the PD with a detec-

tion signature, a classification signature, and an integrat-

ed isolation switch with programmable inrush current

control. These devices also feature power-mode under-

voltage lockout (UVLO) with wide hysteresis and power-

good status outputs.

The MAX5942A/MAX5942B also integrate all the build-

ing blocks necessary for implementing DC-DC fixed-

frequency isolated power supplies. This device is a

current-mode controller with an integrated high startup

circuit suitable for isolated telecom/industrial voltage

range power supplies. A high-voltage startup circuit

allows the PWM controller to draw power directly from the

18V to 67V input supply during startup. The switching

frequency is internally trimmed to 275kHz 10ꢀ, thus

reducing magnetics and filter components. The

MAX59412A allows an 85ꢀ operating duty cycle and can

be used to implement flyback converters. The MAX5942B

limits the operating duty cycle to less than 50ꢀ and can

be used in single-ended forward converters. The

MAX5942A/MAX5942B are designed to work with or with-

out an external diode bridge in front of the PD.

o PWM Controller

Wide Input Range: 18V to 67V

Isolated (Without Optocoupler) or Nonisolated

Power Supply

Current-Mode Control

Leading-Edge Blanking

Internally Trimmed 275kHz 10ꢀ Oscillator

Soft-Start

Ordering Information

PIN-

MAX DUTY

PACKAGE CYCLE (ꢀ)

PART

TEMP RANGE

MAX5942AESE* -40°C to +85°C

MAX5942ACSE 0°C to +70°C

MAX5942BESE* -40°C to +85°C

MAX5942BCSE

*Future product—contact factory for availability.

16 SO

The MAX5942A/MAX5942B are available in 16-pin SO

packages.

Applications

0°C to +70°C 16 SO

IP Phones

Wireless Access Nodes

Internet Appliances

Computer Telephony

Security Cameras

Pin Configuration

TOP VIEW

V+

16 V

Power Devices in Power-Over-Ethernet/

Power-Over-MDI

15 NDRV

14 V-

SS_SHDN

ULVO

MAX5942A

MAX5942B

13 CS

12 GND

11 PGOOD

10 PGOOD

RCL

Typical Operating Circuit appears at end of data sheet.

GATE

OUT

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...24

中文翻译

下载PDF

与HD6412352TE相关器件

型号	品牌	获取价格	描述	数据表
HD6412352TE10	RENESAS	获取价格	Microcontroller, 16-Bit, 10MHz, CMOS, PQFP120, PLASTIC, TQFP-120
HD6412352TE13	RENESAS	获取价格	Microcontroller, 16-Bit, 13MHz, CMOS, PQFP120, PLASTIC, TQFP-120
HD6412352TE20V	RENESAS	获取价格	16-BIT, 20MHz, MICROCONTROLLER, PQFP120, PLASTIC, TQFP-120
HD6412363	RENESAS	获取价格	Renesas 16-Bit Single-Chip MicrocomputerH8S Family/H8S/2300 Series
HD6412363VTE	RENESAS	获取价格	IC,MICROCONTROLLER,16-BIT,H8S/2000 CPU,CMOS,TQFP,120PIN,PLASTIC
HD6412373	RENESAS	获取价格	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
HD6412373R	RENESAS	获取价格	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
HD6412390	ETC	获取价格	Microcomputer Development Environment System
HD6412390TE20	RENESAS	获取价格	16-BIT, 20MHz, MICROCONTROLLER, PQFP120, PLASTIC, TQFP-120
HD6412392	ETC	获取价格	Microcomputer Development Environment System High-Performance Embedded Workshop 2 HEW Debu

与HD6412352TE相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

72
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

65
SL74HC10N：高性能三输入与非门解析
2024-09-03

148
AIC1781A 电池充电控制器深度解析
2024-09-03

131

产品中心

服务支持

精选活动

关于我们

帮助中心

HD6412352TE

HD6412352TE 数据手册

与HD6412352TE相关器件

与HD6412352TE相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

HD6412352TE

HD6412352TE 数据手册

与HD6412352TE相关器件

与HD6412352TE相关文章

您还可以找

您在本页遇到什么问题？