【应用】双向I2C隔离芯片Si8600AB-B-IS应用于解码板和功放板的连接，高隔离电压保护芯片不被损坏

时间： 2020-06-05 来源：世强

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一款一体机点歌机产品内部集成了音视频的解码板和音频效果处理器及音箱单元的驱动功放板，二者分别从不同的电源板取电，同时解码板通过I2C接口去控制功放板的一些参数，比如均衡、音量大小、唱歌模式等。样板在调试过程中，有发现几块样板在使用过程中，会出现无声音输出或者参数无法正常控制情况；经确认，发现是解码板的数字音频输出管脚或者I2C控制管脚出现了损坏情况。

考虑到这两块板子的供电电源不一样，而且功放板的功率很大，内部又有+48V电源，同时解码板芯片的防护能力也比较弱。为了彻底解决这个问题，一方面将数字音频从I2S信号切换为光纤信号，同时对I2C信号增加隔离芯片，保证了两块板子的彻底隔离。经过从参数、供货等方面进行评估，确认使用SILICON LABS的双向I2C隔离芯片 Si8600AB-B-IS，该芯片支持I2C双向通信，同时隔离电压也达到了2.5KVrms，完全能满足我们产品的使用环境。如下是该部分的原理图。

图1 隔离芯片的原理图

Si8600AB-B-IS是一款支持双通道双向通信的隔离芯片，可以用在I2C信号的隔离通信上；我们产品在使用了该芯片之后，对新的样板进行测试，就再也没有出现过样板器件损坏的情况。

芯片的工作电压比较宽，范围3.0V~5.5V，同时信号接口支持开漏模式，通过上拉电阻接到不同电源，就能满足不同的电平标准，对于某些双边使用不同工作电压的应用，能节省电平转换电路。

芯片的I2C双向通道的速度达到了1.7MHz，大部分的I2C接口只是用来传输指令功能，数据量小，可以使用在大部分的应用场合中。

芯片两边的隔离电压达到了2.5KVrms，对于使用在机器内部的接口之间的隔离完全没有问题；如果有对外接口，根据不同的使用环境可以选择3.75KVrms或者5.0KVrms的产品。

该系列芯片使用起来很灵活，可以选择不同的通道数、通道方向，隔离电压值和封装来满足多种多样的使用场景，而且单向通道的速率更是达到了10Mbps，如下是产品的局部图。

图2. 产品局部图

一体机产品通过使用Si8600AB-B-IS来实现I2C的双向隔离通信，借助其高隔离电压，有效保护了产品的器件安全；升级产品经过公司内部的严格测试，彻底解决了前期样板出现的器件损坏情况。

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2/9/2021 - SILICON LABS - 产品变更通知及停产信息代理服务技术支持批量订货

Silicon Labs（芯科科技） Si86xx ISO-EVB用户指南

型号- SI8661BC-B-IS1R,SI8642BB-B-IS,SI8642ED-B-ISR,SI8621BC-B-ISR,SI8652BB-B-IS1R,SI8651BB-B-IS1,SI8660BA-B-IS1,SI8650,SI8662BC-B-IS1,SI8663AB-B-IS1R,SI8655,SI8645BA-B-IU,SI8642BB-B-IS1,SI8651,SI8652,SI8620AB-B-ISR,SI8652EC-B-IS1,SI8660BB-B-IS1R,SI8640BB-B-IS,SI863X,SI8650BD-B-ISR,SI8645BB-B-IS1,SI8630AB-B-IS1R,SI8663EC-B-IS1R,SI8662BB-B-IS1R,SI8640BD-B-IS,SI8660,SI8661,SI8635BD-B-ISR,SI8610BB-B-ISR,SI8660ED-B-ISR,SI8635BD-B-IS,SI8605AB-B-IS1,SI8622ED-B-ISR,SI8662,SI8663,SI8642BD-B-IS,SI8661EC-B-IS1,SI8631BD-B-IS,SI8602AC-B-ISR,SI864X,SI8610ED-B-ISR,SI8635BC-B-IS1R,SI8630BC-B-IS1,SI8606AC-B-IS1R,SI8661EC-B-IS1R,SI8640EC-B-IS1,SI8663BD-B-IS,SI8622EC-B-ISR,SI8602AB-B-ISR,SI8610BB-B-IS,SI8641BB-B-IUR,SI8660BA-A-IS1,SI865X,SI8605AC-B-IS1,SI8651ED-B-ISR,SI8641BC-B-IS1R,SI8663ED-B-ISR,SI8635BC-B-IS1,SI8631BB-B-IS,SI8635BB-B-IS,SI8661AB-B-IS1,SI8661AB-B-IS1R,SI8650ED-B-IS,SI8642AB-B-IS,SI8641BA-B-IU,SI8631AB-B-IS,SI8622EB-B-IS,SI8650AB-B-IS1R,SI8620AB-B-IS,SI8655BD-B-ISR,SI8631EC-B-IS1,SI866X,SI8621ED-B-IS,SI8663BC-B-IS1R,SI8640BA-B-IUR,SI8641BD-B-ISR,SI8652AB-B-IS1,SI8622EC-B-IS,SI8641EC-B-IS1,SI8631AB-B-ISR,SI8631BB-B-ISR,SI8621BB-B-IS,SI8640AB-B-IS1,SI8600AD-B-IS,SI8640BC-B-IS1R,SI8606AD-B-IS,SI8655BD-B-IS,SI8652BD-B-IS,SI8662BD-B-ISR,SI8630ED-B-ISR,SI8610BC-B-ISR,SI8610AB-B-IS,SI8620BC-B-IS,SI8620BB-B-IS,SI8610,SI8662BB-B-IS1,SI8620EC-B-IS,SI8605AB-B-IS1R,SI8655BB-B-IS1R,SI8660ED-B-IS,SI8645BB-B-IS1R,SI8631BB-B-IS1,SI8622BB-B-ISR,SI8650BC-B-IS1,SI8620ED-B-ISR,SI8663AB-B-IS1,SI8640AB-B-ISR,SI8662ED-B-ISR,SI8622ED-B-IS,SI8630BC-B-IS1R,SI8641BB-B-ISR,SI8600AC-B-ISR,SI8642BT-ISR,SI8622,SI8631BC-B-IS1R,SI8640BB-B-IS1,SI8641BC-B-IS1,SI8641BD-D-IS,SI8620,SI8621,SI860X,SI8640EC-B-IS1R,SI8641ED-B-ISR,SI8620BC-B-ISR,SI8620BD-B-IS,SI8622BD-B-IS,SI8655BA-B-ISR,SI8620EC-B-ISR,SI8600AB-B-ISR,SI8641ED-B-IS,SI8640AB-B-IS1R,SI8661BD-B-IS,SI8635,SI8630EC-B-IS1R,SI8630,SI8631,SI8630AB-B-IS1,SI8621AB-B-ISR,SI861X,SI8652ED-B-IS,SI8650EC-B-IS1,SI8642BB-B-IS1R,SI8662AB-B-IS1R,SI8620BD-B-ISR,SI8606AD-B-ISR,SI8662BC-B-IS1R,SI8663ED-B-IS,SI8650BD-B-IS,SI8640BC-B-IS1,SI8645,SI8662EC-B-IS1,SI8640,SI8641,SI8630ED-B-IS,SI8642,SI8640AB-B-IS,SI862X,SI8641BB-B-IS,SI8655BA-B-IUR,SI8661BB-B-IS1R,SI8621EC-B-ISR,SI8652BC-B-IS1R,SI8600AD-B-ISR,SI8655BB-B-IS1,SI8645BD-B-ISR,SI8642AB-B-IS1,SI8620BB-B-ISR,SI8645BB-B-IS,SI8662EC-B-IS1R,SI8650ED-B-ISR,SI8642BC-B-IS1R,SI8660AB-B-IS1,SI8642BA-B-IU,SI8640BA-B-IU,SI8621AB-B-IS,SI8606AC-B-IS1,SI8660BA-B-IS1R,SI8652EC-B-IS1R,SI8642AB-B-ISR,SI8630EC-B-IS1,SI8630AB-B-IS,SI8651AB-B-IS1,SI8641BA-B-IUR,SI8631ED-B-IS,SI8642BD-B-ISR,SI8660BC-B-IS1R,SI8652BB-B-IS1,SI8630AB-B-ISR,SI8651BB-B-IS1R,SI8640ED-B-IS,SI8642ED-B-IS,SI8652AB-B-IS1R,SI8622BC-B-ISR,SI8631BC-B-IS1,SI8650BB-B-IS1,SI8641BB-B-IS1,SI8631AB-B-IS1R,SI8610ED-B-IS,SI8660BD-B-IS,SI8650BC-B-IS1R,SI8602AB-B-IS,SI8655BA-C-IUR,SI8663BD-B-ISR,SI8641BB-B-IS1R,SI8631BD-B-ISR,SI8610BC-B-IS,SI8651EC-B-IS1,SI8661BB-B-IS1,SI8661ED-B-IS,SI8631EC-B-IS1R,SI8622EB-B-ISR,SI8652BC-B-IS1,SI8651BD-B-ISR,SI8631AB-B-IS1,SI8610AB-B-ISR,SI8621ED-B-ISR,SI8640BB-B-ISR,SI8622BD-B-ISR,SI8630BB-B-IS1R,SI8642EC-B-IS1R,SI8600,SI8602,SI8645BD-B-IS,SI8641BD-B-IS,SI8661BC-B-IS1,SI8630BD-B-IS,SI8660EC-B-IS1,SI8605,SI8606,SI8610BD-B-ISR,SI8641EC-B-IS1R,SI8605AD-B-IS,SI8645BC-B-IS1,SI8650EC-B-IS1R,SI8622BB-B-IS,SI8602AD-B-IS,SI8640BB-B-IS1R,SI8630BD-B-ISR,SI8641BA-C-IU,SI8635BB-B-ISR,SI8602AD-B-ISR,SI8621BC-B-IS,SI8641AB-B-IS1R,SI8622BC-B-IS,SI8610EC-B-ISR,SI8651BC-B-IS1,SI8621EC-B-IS,SI8605AC-B-IS1R,SI8600AC-B-IS,SI8651ED-B-IS,SI8662ED-B-IS,SI8602AC-B-IS,SI8641BA-C-IUR,SI8605AD-B-ISR,SI8663EC-B-IS1,SI8652BD-B-ISR,SI8621BD-B-ISR,SI8651BD-B-IS,SI8651EC-B-IS1R,SI8641BB-B-IU,SI8663BB-B-IS1R,SI8620ED-B-IS,SI8640BD-B-ISR,SI8660AB-B-IS1R,SI8641AB-B-IS,SI8642AB-B-IS1R,SI8660BC-B-IS1,SI8630BB-B-ISR,SI8642EC-B-IS1,SI8640ED-B-ISR,SI8645BB-B-ISR,SI8660BD-B-ISR,SI8655BA-B-IS,SI8641AB-B-IS1,SI8650AB-B-IS1,SI8661BD-B-ISR,SI8663BC-B-IS1,SI8662BD-B-IS,SI8655BA-B-IU,SI8631ED-B-ISR,SI8650BB-B-IS1R,SI8645BA-B-IUR,SI8621BB-B-ISR,SI8630BB-B-IS,SI8600AB-B-IS,SI8610EC-B-IS,SI8660BB-B-IS1,SI8630BB-B-IS1,SI8610BD-B-IS,SI8660EC-B-IS1R,SI8645BC-B-IS1R,SI8662AB-B-IS1,SI8663BB-B-IS1,SI8652ED-B-ISR,SI8661ED-B-ISR,SI8641AB-B-ISR,SI8642BB-B-ISR,SI8642BA-B-IUR,SI8631BB-B-IS1R,SI8651AB-B-IS1R,SI8642BC-B-IS1,SI8621BD-B-IS,SI8651BC-B-IS1R

2016年06月02日 - SILICON LABS - 用户指南 - Rev 0.2 代理服务技术支持批量订货

带单向数字通道的Si860x双向I²C隔离器

描述- Si860x系列隔离器是一款针对I2C和SMBus串行端口应用的单一封装电隔离解决方案。该系列产品基于Silicon Labs专有的射频隔离技术，提供更短的传播延迟、更低的功耗、更小的安装尺寸以及比光耦或其他数字隔离器更稳定的温度和老化性能。

型号- SI8600AC-B-IS,SI8605AD-B-IS,SI8606AD-AS,SI8602AB-AS,SI8602AC-B-IS,SI8605AB-AS1,SI8602AD-AS,SI8600AB-AS,SI8600AC-AS,SI8600AD-B-IS,SI8602AC-AS,SI8602AD-B-IS,SI8600AD-AS,SI8606AD-B-IS,SI8605AD-AS,SI8606AC-B-IS1,SI8605AB-B-IS1,SI8602AB-B-IS,SI8606AC-AS1,SI8605AC-AS1,SI8605AC-B-IS1,SI860X,SI8600AB-B-IS

September 2019 - SILICON LABS - 数据手册 - Rev. 1.72 代理服务技术支持批量订货

210119976 201104879 8/16L-SOIC-150mils附加装配、测试和装运附录

描述- 本通知为硅实验室（Silicon Labs）发布的PCN #2021-01-19-976的补充，宣布将Si822x产品从受影响的产品列表中移除。此变更不影响产品的形式、尺寸、功能、质量或可靠性。UTAC泰国（UTL）作为硅实验室的额外组装、测试和发货地点已成功认证，并符合ISO9001、ISO14001和IATF16949标准。自生效日期起，硅实验室可以从两个合格的组装、测试和发货地点进行组装、测试和发货。

1/19/2021 - SILICON LABS - 产品变更通知及停产信息代理服务技术支持批量订货

电动汽车BMS系统怎能缺少隔离？

电池管理系统（BMS）是混合动力汽车和电动汽车的关键结构，主要用于提高电池的利用率。顺势而为，Silicon Labs推出了高速稳定的Si86xx 5kV数字隔离芯片，具有-40ºC至125ºC全温度范围内业界最快的150Mbps数据传输率，对于节能系统设计，能在1Mbps数据速率下以每通道小于1.6mA的超低功率运行。

2016-04-11 - 新应用代理服务技术支持批量订货

高速数字隔离光耦让您的电池管理系统更安全

新一代数字隔离器Si86xx，支持双向数据传输，非常适合CAN总线隔离。从而助力CAN总线实现BMS系统间的信息共享与控制。

2016-10-13 - 新应用代理服务技术支持批量订货

201104879 Si82xx/Si84xx/Si86xx 8/16L-SOIC-150mils附加装配、测试和装运

描述- Silicon Labs宣布，UTAC泰国（UTL）已成功通过认证，成为Si82xx/Si84xx/Si86xx 8/16L-SOIC-150mils的额外组装、测试和发货地点。此变更旨在增加产能以确保供应。变更不影响产品形式、功能、质量或可靠性。自2021年2月10日起生效。

型号- SI8622BC-B-ISR,SI8235AC-D-IS1R,SI8660BA-B-IS1,SI8622EC-B-ISR,SI8610BC-B-IS,SI8220DB-D-IS,SI82305B-D-IS1R,SI8600AB-B-IS,SI8640EC-B-IS1,SI8233BC-D-IS1R,SI8405AB-B-IS1R,SI8233AC-D-IS1,SI8660BA-B-IS1R,SI8233BC-D-IS1,SI8400AB-A-IS,SI8234BC-D-IS1R,SI8237AC-D-IS1,SI8622EC-B-IS,SI8230AC-D-IS1R,SI8423ETA-D-IS,SI8605AB-B-IS1,SI8422AB-D-ISR,SI8651EC-B-IS1R,SI8400AB-B-ISR,SI8238BC-D-IS1R,SI8622BC-B-IS,SI8621BC-B-ISR,SI8621BC-B-IS,SI8641EC-B-IS1,SI8221DC-D-ISR,SI8230AC-D-IS1,SI8642AB-B-IS1,SI8232BC-D-IS1,SI82308B-D-IS1R,SI8660AB-B-IS1R,SI8440BA-D-IS1R,SI8220BB-D-IS,SI8220BB-D-ISR,SI8235BC-D-IS1,SI8620BB-B-IS,SI8234AC-D-IS1,SI8405AB-B-IS1,SI8421AB-D-ISR,SI8641EC-B-IS1R,SI8234AC-D-IS1R,SI86XX,SI8420BB-D-IS,SI82XX,SI8660BA-C-IS1R,SI8605AC-B-IS1R,SI8238AC-D-IS1,SI8401AB-B-ISR,SI8231BC-D-IS1R,SI8238AC-D-IS1R,SI8232AC-D-IS1R,SI8645BA-C-IS1,SI8640EC-B-IS1R,SI8600AB-B-ISR,SI8440BA-D-IS1,SI82305B-D-IS1,SI8231AC-D-IS1,SI8231BC-D-IS1,SI8605AC-B-IS1,SI82308B-D-IS1,SI8230BC-D-IS1R,SI8221CC-D-IS,SI8220DB-D-ISR,SI8651EC-B-IS1,SI8645BA-B-IS1R,SI8220CB-D-ISR,SI8220CB-D-IS,SI8235AC-D-IS1,SI8234BC-D-IS1,SI8660AB-B-IS1,SI8237AC-D-IS1R,SI8400AB-A-ISR,SI8645BA-C-IS1R,SI8233AB-D-IS1R,SI8422AB-D-IS,SI8238BC-D-IS1,SI8605AB-B-IS1R,SI8231AC-D-IS1R,SI8401AB-B-IS,SI8620BC-B-ISR,SI8642AB-B-IS1R,SI8655BA-C-IS1R,SI8423ETA-D-ISR,SI8621EC-B-ISR,SI8232BC-D-IS1R,SI8620BC-B-IS,SI8221CC-D-ISR,SI8620BB-B-ISR,SI8232AC-D-IS1,SI8610BC-B-ISR,SI8235BC-D-IS1R,SI8237BC-D-IS1,SI8237BC-D-IS1R,SI8420BB-D-ISR,SI8621EC-B-IS,SI8230BC-D-IS1,SI8233AC-D-IS1R,SI8655BA-C-IS1,SI8421AB-D-IS,SI84XX,SI8233AB-D-IS1,SI8660BA-C-IS1,SI8645BA-B-IS1,SI8221DC-D-IS,SI8400AB-B-IS

11/4/2020 - SILICON LABS - 产品变更通知及停产信息代理服务技术支持批量订货

Silicon Labs（芯科科技） AN559 使用Si86xx CMOS系列隔离器来隔离模拟信号

描述- 本文介绍了基于Si86xx CMOS隔离器的ISOlinear参考设计，该设计提供直流至500 kHz频率范围内的模拟信号隔离。该设计中的电路在成本和性能方面优于模拟隔离放大器，适用于模拟电平转换、接地噪声消除和安全隔离等应用。文章详细描述了三种不同成本/性能点的模拟隔离电路，并提供了电路操作、噪声和纹波与调制频率的关系、调制器操作、最佳调制器频率的确定、滤波器优化等方面的信息。

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Silicon Labs（芯科科技）Si860x具有单向数字通道的双向I2C隔离器数据手册

描述- Si860x Bidirectional I2C Isolators with Unidirectional Digital Channels Data Sheet

型号- SI8605AD-B-IS,SI86XXXX,SI8602AB-AS,SI8602AD-AS,SI8600AC-AS,SI8600AD-B-IS,SI8602AD-B-IS,SI8606AD-B-IS,SI8605AD-AS,SI8602AB-B-IS,SI8606AC-AS1,SI8605AC-B-IS1,SI8600AB-B-IS,SI8600AC-B-IS,SI8606AD-AS,SI8602AC-B-IS,SI8605AB-AS1,SI8600AB-AS,SI8602AC-AS,SI8600AD-AS,SI8606AC-B-IS1,SI86XX,SI8600,SI8605AB-B-IS1,SI8602,SI8605AC-AS1,SI860X,SI86XYSV,SI8605,SI8606

2019年09月 - SILICON LABS - 数据手册 - Rev. 1.72 代理服务技术支持批量订货