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LM5066I: Pin TIMER Restart Sequence

Part Number: LM5066I

Tool/software:

Hi Team,

LM5066I triggering a protection restart

Why is the TIMER signal not activated?

C_TIMER=10nF

CH1_Vin ; CH2_TIMER ; CH3_GATE ; CH4_FB

The current measured is very small

What other mechanisms will trigger protection?

CH1_Vin ; CH2_TIMER ; CH3_GATE ; CH4_Iin