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HV9803 LED driver and subharmonic oscillation?

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T

treez

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Hello,

The HV9803 LED driver says that it avoids subharmonic oscillation.

The datasheet says that subharmonic oscillation is avoided by inserting small time delays after the current sense comparator has tripped (as explained on page 5 under "Current sense comparator and timer circuits")

But surely this is incorrect, the avoidance of subharmnic oscillation is done by the fact that HV9803 is a constant off time controller, and subharmonic oscillation doesnt happen with constant off time controllers?

HV9803 DATASHEET:
**broken link removed**
 

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