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SI3460-XYY-GM

更新时间： 2024-12-01 03:10:39

品牌	Logo	应用领域
芯科 - SILICON		控制器
页数	文件大小	规格书
22页	431K
描述
IEEE 802.3af PSE INTERFACE AND DC-DC CONTROLLER

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SI3460-XYY-GM 数据手册

Si3460

IEEE 802.3af PSE INTERFACE AND DC-DC CONTROLLER

Features

Pin Assignments

ꢀ

IEEE 802.3af™ compliant PSE and

dc-dc controller

Autonomous operation requires no

host processor interface

Complete reference design

available, including Si3460 controller,

PSE firmware, and schematic:

ꢁ Low-cost BOM with compact PCB

footprint

ꢁ Robust 3-point detection

algorithm eliminates false

detection events

ꢁ IEEE-compliant classification

ꢁ IEEE-compliant disconnect

ꢁ Inrush current control

ꢁ Short-circuit output fault

protection

ꢁ LED status signal (detect,

power good, output fault)

UNH Interoperability Test Lab test

report available

Si3460

GATE

CTRL1

VDD

STATUS

ISENSE

GND

RST

ꢁ Operates directly from a +12 or

+15 V isolated supply

ꢁ dc-dc controller generates –48 V

ꢀ

CTRL2

250KHZ

VSENSE

DETA

PSE output for SELV compatibility ꢀ Extended operating range

with telephony interfaces (–40 to +85 °C)

ꢁ Supports up to 15.4 W maximum ꢀ 11-Pin Quad Flat No-Lead (QFN)

11-pin QFN (3x3 mm)

Top View—Pads on bottom of package

output power (Class 0)

ꢁ Tiny 3 x 3 mm PCB footprint;

Pb-free, RoHS-compliant

Applications

ꢀ IEEE 802.3af endpoints and ꢀ Set-top boxes

midspans

ꢀ Environment A and B PSEs

ꢀ FTTH media converters

ꢀ Cable modem and DSL

ꢀ Embedded PSEs

gateways

Description

The Si3460 is a single-port –48 V power management controller for

IEEE 802.3af-compliant Power Sourcing Equipment (PSE). Designed

to minimize system cost and ease of implementation in embedded

PSE endpoint (switches) or midspan (power injector) applications, the

Si3460 operates directly from a 12 or 15 V input supply and integrates

a digital PWM-based dc-dc converter for generating the –48 V PSE

output supply. The IEEE-required Powered Device (PD) detection

feature uses a robust 3-point algorithm to avoid false detection events.

The Si3460's reference design kit also provides full IEEE-compliant

classification and PD disconnect. Intelligent protection circuitry

includes input undervoltage lockout (UVLO), current limiting, and

output short circuit protection. The Si3460 is designed to operate

completely independently of host processor control. An LED status

signal is provided to indicate the port status, including detect, power

good, and output fault event information for use within the host

system. The Si3460 is pin-programmable to support endpoint and

midspan applications, as well as each of the different classification

power levels specified by the IEEE 802.3af standard.

comprehensive reference design kit is available (Si3460-EVB),

including a complete schematic and BOM (Bill-of-Materials) for the dc-

dc converter and PSE functions.

Preliminary Rev. 0.4 11/07

Si3460

This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

12 3 4 5 6 7...22

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与SI3460-XYY-GM相关器件

型号	品牌	获取价格	描述	数据表
SI3461	SILICON	获取价格	SINGLE-PORT IEEE 802.3AT POE/POE+ PSE INTERFACE
SI3461-E01-GM	SILICON	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, 3 X 3 MM, ROHS COMPLIANT, MO-243, QFN
SI3461-E01-GMR	SILICON	获取价格	Power Management Circuit
SI3461-E02-GM	SILICON	获取价格	SINGLE-PORT IEEE 802.3AT POE/POE+ PSE INTERFACE
SI3461-E02-GMR	SILICON	获取价格	Power Management Circuit
SI3461-KIT	SILICON	获取价格	SINGLE-PORT IEEE 802.3AT POE/POE+ PSE INTERFACE
SI3462-E01-GMR	SILICON	获取价格	Telecom Circuit, 1-Func, QFN-11
SI3464DV	VISHAY	获取价格	N-Channel 20-V (D-S) MOSFET
SI3464DV-T1-GE3	VISHAY	获取价格	N-Channel 20-V (D-S) MOSFET
SI3465DV	VISHAY	获取价格	P-Channel 20-V (D-S) MOSFET

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