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Original question:
LM5170-Q1: How to get higher voltages without changing the topology of 2 switch solution
Replies: 1
Views: 55
Part Number: LM5170-Q1
Unfortunately, the other thread got locked however just to continue where we last left it,
First of all thank you Youhao and Garrett.
For the first stage, Is there any reason why I cannot use a clamp to drop 46V and run at cira 126V? That way, the ramp measurement and controller believes its actually at 80V?
Alternatively, the Ramp R and C can also be adjusted to ensure it remains within the recommended 5V (although the datasheet implies up to 14V is ok)
For the second stage current sense, I can use a differential amplifier with unity gain?
I accept its a convoluted solution but principally, can you think of any more issues?
Best regards
Atish