LM5035C: How do I connect the 'RAMP' pin?

kwnag woon Lee

Prodigy 170 points

Part Number: LM5035C

Hello,

I have a question about LM5035C.

I'm working on an isolated DC/DC converter application.

VIN range : 200V ~ 400V.

How do I connect the 'RAMP' pin (Rff)?

Thank you.

over 7 years ago

0 John Griffin1 over 7 years ago

TI__Mastermind 34465 points

Hello kwnag woon Lee ,
The RAMP pin is the pwm ramp signal.
You should connect this pin to an external RC network.
The capacitor goes from RAMP to GND and the resistor goes from RAMP to VIN.
Regards
John

Power management

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LM5035C: How do I connect the 'RAMP' pin?