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UC3842: finding transconductance of a modulator in the PWM controller.

Part Number: UC3842
Other Parts Discussed in Thread: UC2843

Hello TI E2E,

I am using UC3842 to design a simple Buck converter with,

Vin=48V

Vout=12V

Iout=5

I am referring SLUP340 as a reference for my design,

It mentions to find transconductance of modulator in the controller.

I am unable to find it from controller datasheet, please help me with this?

Also please share link for any suitable similar design with this controller IC UC3842.