By LEIDITECH | 15 March 2024 | 0 Comments
Shanghai Leiditech can solve the problemYPbPr/ YCbCrinterface ESD/EOSStatic surge problem
YPbPr /YCbCr The interface transmits video signals，Not transmitting audio signals。YPbPr and YCbCr All are color coding formats for video signals，Multiple applications for set-top boxes（Set-top box）,TVtelevision，projector，Game consoles andDVDplayer。
YPbPr：It is an analog video interface，Also known as component video interface。The signal separates brightness through separation（Y）And two chromaticity components（Pb and Pr）To transmit images。Y Representative brightness signal，Pb and Pr The difference signals representing blue and red respectively。YPbPr Interface typically uses RCA Connector or 3.5mm TRS connector，As shown in the following figure。
YCbCr：It is a digital video color coding format，Also known as chrominance brightness encoding。YCbCr Divide the image into brightness（Y）And two chromaticity components（Cb and Cr），And sample and quantify each component。
YCbCr The signal can be transmitted through HDMI、DVI、DisplayPort Equal digital interface transmission，It can also be achieved throughRCAInterface transmission。
YPbPr /YCbCr There are instances of interface damage occurring，For example, the occurrence of electrostatic surges caused by lightning weather conditions and other factors。Interface not doneESD/EOSprotect，Will cause abnormal video output：Unable to display image，Color anomaly，Screen flickering。We can only find professionals to replace the video outputchip，There are also serious cases where the TV connected to this interface is burned down。Try to avoid such situations as much as possible。
Shanghai LeimaoEMCLittle brother，In terms of electrostatic surge protection for electronic devices，Ten years of practical customer service experience。LaunchYPbPr /YCbCr Video interfaceESD/EOSStatic electricity and surge protection scheme。
Plan One、Discrete component scheme GBLC03C/GBLC05C
Advantages of the plan：Using three discrete particlesESDdiodeComplete the electrostatic surge protection for the interface，Convenient wiring，Low junction capacitance，IPP20% higher currentA/18A，It can ensure the integrity of signal transmission，It can also protect against certain surges。The anti-static ability meets the requirementsIEC 61000-4-2（static electricity）±30kV（air）and ±30kV（contact）standard。
Option 2、Integrated component solution ESDA3.3CW-4/ESDA5.0CW-4
Advantages of the plan：Adopting an integrated chipESDDiodes complete electrostatic surge protection for interfaces，Save space，Low junction capacitance，IPPCurrent is high by 10A/7A，It can ensure the integrity of signal transmission，It can also protect against certain surges。The anti-static ability meets the requirementsIEC 61000-4-2（static electricity）±30kV（air）and ±30kV（contact）standard。
If sample testing is required for the above plan, please contact Shanghai Leiditech sales personnel or EMC staff.
Shanghai Leiditech Electronics specializes in providing customers with electromagnetic compatibility EMC design services, and offers laboratory testing for free.
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