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LM74502: Use for inverting buck boost converter

Part Number: LM74502

Hello team,

I want to use this device for inverting buck-boost converter using buck converter configuration. (+15V -> -15V)

IBB with buck converter will output positive voltage to the load at the start up, and I can't accept any positive voltage for the load.

I am thinking of using LM74502 for this configuration.

I think just connect the VIN and VOUT backward will work, am I correct?

Best Regards,
Kei Kuwahara