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基于LinkSwitch-TN2/EFR32MG13主控器件的墙壁开关单火线供电解决方案

2018-01-26
类别:家用电器
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文章创建人 拍明芯城

  概述

  单火线供电电源用于给智能墙壁开关中的控制模块进行供电,控制模块工作时会有电流流过照明灯,如果电源静态电流比较大,在开关断开后会出现闪烁现象,称为“鬼火”。为消除“鬼火”现象,要求电源静态电流低于75uA,保证3W以上照明灯不会闪烁。

SGM321型号墙壁开关单火线供电优选器件方案.png


  优势

  · PI的LinkSwitch-TN2离线式开关电源IC,内置725V高压MOSFET,支持宽范围输入电压:90VAC~277VAC,满足电网电压波动要求。双路输出:3.8V/50mA和12V/20mA分别给控制模块和继电器供电。静态消耗电流<75uA,具有超低消耗电流和高轻载效率,可确保兼容额定功率低至3W的高能效LED灯泡和节能灯。

【LinkSwitch-TN2】

集成了系统级保护的高能效离线式开关电源IC可实现低元件数的电源设计

图1. 典型的降压式变换器应用.png

图1. 典型的降压式变换器应用

产品详情

LinkSwitch™-TN2系列IC适用于非隔离离线式电源,与传统的线性或阻容降压式方案相比性能有大幅提升。采用高集成度的LinkSwitch-TN2 IC的设计具有更大的适用性,并且具有更高的效率、更全面的系统级保护和更高的可靠性。该产品系列支持降压式、降压-升压式和反激式变换器拓扑结构。每个器件在一个单片IC上集成了一个725 V的功率MOSFET、振荡器、可实现最高轻载效率的开/关控制、一个给IC实现自供电的高压开关电流源、频率调制、快速(逐周期)电流限制、迟滞热关断以及输出和输入过压保护电路。

LinkSwitch-TN2 IC在待机模式下消耗极小的电流,从而使电源设计符合全球所有的空载和待机功耗标准。 LinkSwitch-TN2器件还具有更高的反馈引脚参考电压精度,达到±1.3%,上一代器件(LinkSwitch-TN)的参考电压精度为6.6%。 MOSFET的工作限流点可通过BYPASS引脚电容值进行选择。选择较高的限流点可提供最大连续输出电流,而较低的限流点允许使用成本非常低的小尺寸表面贴装电感。完善的保护特性可确保电源安全、可靠运行,在出现输入和输出过压故障、器件过热故障、电压失调以及电源输出过载或短路故障时保护器件及整个系统。

产品特色

性能特点及设计适用性

支持降压式、降压-升压式和反激式拓扑结构

元件数量非常少的降压式变换器

出色的负载调整率和输入电压调整率

可选的器件限流点

66 kHz工作频率,且具有精确的限流点

允许使用市售现成的低成本电感

可缩减电感和电容的尺寸和成本

频率调制技术可降低EMI滤波电路的复杂度

引脚布局利于PCB板上的散热设计

增强的安全及可靠性能

输出过压保护(OVP)

输入过压保护(OVL)

迟滞过热保护(OTP)

扩大了漏极与其它引脚间的爬电距离,提高了应用的可靠性

集成725 V额定电压MOSFET,具有出色的抗雷击性能

EcoSmart™ – 高效节能

待机时IC的供电电流 <100 μA

开/关控制可在宽负载范围内提供恒定的效率

轻松满足全球所有能效标准

采用外部偏置供电的高端降压式变换器拓扑时的空载功耗<30 mW

采用外部偏置供电的反激式变换器拓扑时的空载功耗<10 mW

输出功率

产品230 VAC ±15%85-265 VAC
MDCM2CCM3MDCM2CCM3
LNK3202P/G/D63 mA80 mA63 mA80 mA
LNK3204P/G/D120 mA170 mA120 mA170 mA
LNK3205P/G/D175 mA270 mA175 mA270 mA
LNK3206P/G/D225 mA360 mA225 mA360 mA


注释:

  1. 器件在默认限流点下工作且有足够散热、工作于非隔离降压式变换器中的典型输出电流。输出功率能力取决于相应的输出电压和散热条件。请参阅“设计要点”部分以了解假定条件的详细论述,包括完全非连续导通模式(DCM)工作。

  2. 主要为非连续导通模式。

  3. 连续导通模式。

  4. 封装: P: PDIP-8C, G: SMD-8C, D: SO-8C.



  ·Silicon Labs的EFR32MG13无线SoC支持BLE、Zigbee、Thread,2.4GHz专有协议,通讯距离远,发射功率19dBm,接收灵敏度-103.3 dBm at 125 kbit/s GFSK,工作电流仅69uA/MHz,深度休眠电流(with RTC唤醒)低至1.4Ua。具有出色的能效、超快唤醒时间,适用于需要高性能及低能耗的智能墙壁开关。

【EFR32MG】

EFR32MG 2.4 GHz 19.5 dBm Radio Board BRD4151A Reference Manual

The EFR32MG family of Wireless SoCs deliver a high performance, low energy wireless solution integrated into a small form factor package.

By combining a high performance 2.4 GHz RF transceiver with an energy efficient 32-bitMCU, the family provides designers the ultimate in flexibility with a family of pin-compatible devices that scale from 128/256 kB of flash and 16/32 kB of RAM. The ultra-low power operating modes and fast wake-up times of the Silicon Labs energy friendly 32- bit MCUs, combined with the low transmit and receive power consumption of the 2.4 GHz radio, result in a solution optimized for battery powered applications.

To develop and/or evaluate the EFR32 Mighty Gecko, the EFR32MG Radio Board can be connected to the Wireless Starter Kit Mainboard to get access to display, buttons and additional features from Expansion Boards.

EFR32MG.png


RADIO BOARD FEATURES

• Wireless SoC:EFR32MG1P232F256GM48

• CPU core: ARM Cortex-M4 with FPU

• Flash memory: 256 kB

• RAM: 32 kB

• Operation frequency: 2.4 GHz

• Transmit power: 19.5 dBm

• Integrated PCB antenna, UFL connector(optional).

• Crystals for LFXO and HFXO: 32.768 kHzand 38.4 MHz.

1. Introduction

The EFR32 Mighty Gecko Radio Boards provide a development platform (together with the Wireless Starter Kit Mainboard) for theSilicon Labs EFR32 Mighty Gecko Wireless System on Chips and serve as reference designs for the matching network of the RF interface.

The BRD4151A Radio Board is designed to operate in the 2400-2483.5 MHz band with the RF matching network optimized to operatewith 19.5 dBm output power.

To develop and/or evaluate the EFR32 Mighty Gecko, the BRD4151A Radio Board can be connected to the Wireless Starter Kit Mainboardto get access to display, buttons and additional features from Expansion Boards and also to evaluate the performance of the RFinterface.

2. Radio Board Connector

2.1 Introduction

The board-to-board connector scheme allows access to all EFR32MG1 GPIO pins as well as the RESETn signal. For more information on the functions of the available pin functions, see the EFR32MG1 data sheet.

2.2 Radio Board Connector Pin Associations

The figure below shows the pin mapping on the connector to the radio pins and their function on the Wireless Starter Kit Mainboard.

EFR32MG.png


3. Radio Board Block Summary

3.1 Introduction

This section gives a short introduction to the blocks of the BRD4151A Radio Board.

3.2 Radio Board Block Diagram

The block diagram of the EFR32MG Radio Board is shown in the figure below.

EFR32MG.png


3.3 Radio Board Block Description

3.3.1 Wireless MCU

The BRD4151A EFR32 Mighty Gecko Radio Board incorporates an EFR32MG1P232F256GM48 Wireless System on Chip featuring32-bit Cortex-M4 with FPU core, 256 kB of flash memory and 32 kB of RAM and a 2.4 GHz band transceiver with output power up to19.5 dBm. For additional information on the EFR32MG1P232F256GM48, refer to the EFR32MG1 Data Sheet.

3.3.2 LF Crystal Oscillator (LFXO)

The BRD4151A Radio Board has a 32.768 kHz crystal mounted.

3.3.3 HF Crystal Oscillator (HFXO)

The BRD4151A Radio Board has a 38.4 MHz crystal mounted.

3.3.4 Matching Network for 2.4 GHz

The BRD4151A Radio Board incorporates a 2.4 GHz matching network which connects the 2.4 GHz TRX pin of the EFR32MG1 to the one on-board printed Inverted-F antenna. The component values were optimized for the 2.4 GHz band RF performace and current consumptionwith 19.5 dBm output power.

For detailed description of the matching network, see Chapter 4.2.1 Description of the 2.4 GHz RF Matching.

3.3.5 Inverted-F Antenna

The BRD4151A Radio Board includes a printed Inverted-F antenna (IFA) tuned to have close to 50 Ohm impedance at the 2.4 GHzband.

For detailed description of the antenna see Chapter 4.5 Inverted-F Antenna.

3.3.6 UFL Connector

To be able to perform conducted measurements, Silicon Labs added an UFL connector to the Radio Board. The connector allows anexternal 50 Ohm cable or antenna to be connected during design verification or testing.Note: By default the output of the matching network is connected to the printed Inverted-F antenna by a series component. It can beconnected to the UFL connector as well through a series 0 Ohm resistor which is not mounted by default. For conducted measurementsthrough the UFL connector the series component to the antenna should be removed and the 0 Ohm resistor should be mounted (seeChapter 4.2 Schematic of the RF Matching Network for further details).

3.3.7 Radio Board Connectors

Two dual-row, 0.05” pitch polarized connectors make up the EFR32MG Radio Board interface to the Wireless Starter Kit Mainboard.

For more information on the pin mapping between the EFR32MG1P232F256GM48 and the Radio Board Connector, refer to Chapter 2.2 Radio Board Connector Pin Associations.


     【墙壁开关

  墙壁开关”是指安装在墙壁上使用的电器开关,用来接通和断开电路的,控制照明灯的开关。狭义上的电工产品通常仅指建筑电气中的开关、插座。墙壁开关通俗称呼:控制灯具开关。

  从广义的概念上来讲,电工产品涵盖的范围较广,一般指向终端用户提供电源电器控制的设备,包括开关插座、断路器、综合布线、安防系统等等,又称建筑电气附件(固定、连接或开闭电路用的器件总称)。

  开关

  开关有双控和单控的区别,双控每个单元比单控多一个接线柱。一个灯在房里可以控制,在房外也可以控制称作双控,双控开关可以当单控用,但单控开关不可以作双控。

  1)开关分类,

  按开关的启动方式来分: 拉线开关、旋转开关、倒扳开关、按钮开关、跷板开关. 触摸开关、复位开关、轻点开关等

  2)常用开关按连接方式分类,

  按开关的连接方式来分:单控开关、双控开关、双极(双路)双控开关等。

  3)按规格尺寸分

  按规格尺寸分:86型、118型、120型。

  地域分布:国内大部分使用86型开关(全国80%的地区),一些地区使用118的,120的用的很少。

  4)按功能分类

  声光控延时开关;触摸延时开关;门铃开关;调速(调光)开关;插卡取电开关。

  插座

  墙壁开关,狭义上是指开关,实际上是指墙壁开关、墙壁插座这一个大区域。有机械的、有智能的、有平板的和跷板的。

  1)电脑插座又称网络插座、网线插座.、宽带插座、网络面板。网络这种是从电话中分离,所以就有了电话电脑一体插座;网络的另一种从有线电视分离,所以有了电视电脑一体插座。

  2)电话插座

  3)电视插座又称TV插座、电视面板、有线插座

  4)空调插座,又称16A插座,因为一般的插座都是10A电流,空调插座是16A电流

  5)118插座是横向长方形,120插座是纵向长方形,86插座是正方形。118插座一般分,一位、二位、三位、四位插座。86插座一般是五孔插座,或多五孔插座或一开带五孔插座。




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