The ADuM3220 offers something called output shoot-through logic protection – how does that work and why would I select a product with this feature?
The ADuM3220 offers shoot through protection logic which has logic on the output side that detects if both input signals are high at the same time and sets the outputs low to prevent the 2 outputs from turning on at the same time. This protects against logic errors at the inputs which could turn on both outputs and in some applications could potentially cause shoot through and damage the 2 output MOSFETs. In some applications, like open-loop isolated dc to dc where a fixed 50% duty cycle is used, the ADuM3220 with shoot through protection could be used. In some other applications, like closed loop isolated dc to dc where the duty cycle is not a fixed 50% and could be longer than 50%, the user could instead use the ADuM3221, which does not have shoot through protection. Attached is an article I wrote on the ADuM3220 as a 4A gate driver for synchronous applications that goes into depth on this with some timing charts.
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