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Si3402-EVB

产品描述power management IC development tools poe pwrd-non-isolatd low-emi eval board
产品类别开发板/开发套件/开发工具   
文件大小450KB,共13页
制造商Silicon Laboratories Inc
标准  
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Si3402-EVB概述

power management IC development tools poe pwrd-non-isolatd low-emi eval board

Si3402-EVB规格参数

参数名称属性值
ManufactureSilicon Laboratories
产品种类
Product Category
Power Management IC Development Tools
RoHSYes
ProducEvaluation Boards
类型
Type
Hot Swap Voltage Controllers
工具用于评估
Tool Is For Evaluation Of
Si3402
Input Voltage5 V
Output Voltage3.3 V
接口类型
Interface Type
Etherne
最大工作温度
Maximum Operating Temperature
+ 85 C
最小工作温度
Minimum Operating Temperature
- 40 C
系列
Packaging
Bulk
Unit Weigh50 mg

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Si3402B-EVB
N
ON
-I
SOLATED
E
VALUATION
B
OARD
1. Description
The Si3402B non-isolated evaluation board (Si3402B-EVB Rev 2) is a reference design for a power supply in a
Power over Ethernet (PoE) Powered Device (PD) application. The Si3402B is described more completely in the
data sheet and application notes. This document describes the evaluation board. An evaluation board
demonstrating the isolated application is described in the Si3402B-ISO-EVB user’s guide.
FOR THE
Si3402B
2. Si3402B Board Interface
Ethernet data and power are applied to the board through the RJ45 connector (J1). The board itself has no
Ethernet data transmission functionality, but, as a convenience, the Ethernet transformer secondary is brought out
to the test points. Power may be applied in the following ways:
Connecting a dc source to pins 1, 2 and 3, 6 of the Ethernet cable (either polarity)
Connecting a dc source to pins 4, 5 and 7, 8 of the Ethernet cable (either polarity)
Using an IEEE 802.3-2015-compliant, PoE-capable PSE, such as Trendnet TPE-1020WS
The Si3402B-EVB board schematics and layout are shown in Figures 1 through 6. The dc output is at connectors
J11(+) and J12(–).
Boards are generally shipped configured to produce +5 V output voltage but can be configured for +3.3 V or other
output voltages by changing resistors R5 and R6. Refer to “AN956: Using the Si3402B PoE PD Controller in
Isolated and Non-Isolated Designs” for more information. The preconfigured Class 3 signature can also be
modified according to Table 3 in AN956. The D8–D15 Schottky type diode bridge bypass is recommended only for
higher power levels (Class 3 operation). For lower power levels, such as Class 1 and Class 2, the diodes can be
removed. When the Si3402B is used in external diode bridge configuration, it requires that at least one pair of the
CTx and SPx pins be connected to the PoE voltage input terminals (to the input of the external bridge).
Rev. 1.1 4/16
Copyright © 2016 by Silicon Laboratories
Si3402B-EVB
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