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Renesas Electronics America - Knowledgebase

How can one check if the uPC1935 oscillates?

Latest Updated:12/01/2011


How can one check if the uPC1935 oscillates?


Unfortunately, there is no way to check whether or not it oscillates.
If no output waveform is produced, the chances are that the output is shut down because the timer latch circuit operates due to noise, etc.
Therefore, short-circuit the DLY pin to GND to disable the timer latch circuit and check the operation.

Exercise care in short-circuiting the output when conducting an experiment because the output short-circuit protection feature is not activated in this status.

Suitable Products
Power Management Linear