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Protect Car Electronic Modules Using RBO Circuit Protection

2016-09-13 06:32  
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RBO40 is one of reversed battery and overvoltage (RBO) protection device which has been developed to protect sensitive semiconductors in car electronic modules. The following circuitdiagrams the basic application of the RBO circuitin preventing overvoltages generated by the module from affecting the car supply network.

the basic application of the RBO40 circuit

In theRBO circuitry, this monolithic multi-function protection has 3 funtions integrated on-chip, there are reversed battery protection (D1 diode function), clamping against negative overvoltages, and transil function against load dump effect (T2 transil function).

(source: st.com)