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All   >>  Energy Efficiency   >>   Power Supplies   >>   Questions
 

I am designing a board for an airborne system. I would like to use your 8 output drivers NCV7608 as a High Side and Low Side driver (configuring each output with jumpers). 1. The operating voltage is a protected nominal 28V power with a maximum steady state voltage of 32V. This voltage is above the recommended operating condition in the NCV7608 datasheets. Should this be a problem? 2. Can two outputs be paralleled (source to source and drain to drain) without adding series diodes? 3. Do you have any equivalent chip with lower maximum current limit (<1A) but with the same other capabilities? Thanks, Zvi Dadash

1. The operating voltage is a protected nominal 28V power with a maximum steady state voltage of 32V. This voltage is above the recommended operating condition in the NCV7608 datasheets. Should this be a problem?

This should be OK as the max ratings allow up to 34V DC. However, power dissipation could become unmanageable. 2. Can two outputs be paralleled (source to source and drain to drain) without adding series diodes?

Matching between any combination of outputs (e.g. clamp voltage, overcurrent, etc.) is not implied nor guaranteed. Therefore, proper output operation and protections function cannot be guaranteed in a parallel configuration. Also, what purpose would the diodes serve? 3. Do you have any equivalent chip with lower maximum current limit (<1A) but with the same other capabilities?

If a lower current limit is desired, why would parallel outputs be used?

It would be more useful if you could describe the load and the application.
Answered by:
ON Semiconductor
2015-06-11 12:23:31.537