Considerations When Designing with Isolation and Isolated Driver Devices

Considerations When Designing with Isolation and Isolated Driver Devices
Considerations When Designing with
Isolation and Isolated Driver Devices
Kevin Huang
Tom Gao
 What is Isolation?

Galvanic isolation
No current flow from one circuit to another
Signal information passes from one circuit to another




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 Why Do Systems Need Isolation?
High Voltage




HV Path




Non-Isolated System

A high-voltage breakdown path exists through the control circuitry




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 Isolation Prevents Electrocution
High Voltage




ISOLATOR




Very high impedance
between grounds!

High voltage path is blocked because of high impedance between g