Post Go back to editing

Can the LTM8083 be configured as a inverter, +20Vin to -12Vout for example?

Thread Summary

The user asked if a minimally re-configured LTM8083 in LTSpice for generating a -12V output from a 20V input would work reliably in practice. The final answer confirmed that the configuration would work, with the key consideration being that the Vin voltage (32V relative to Vout) remains below the absolute maximum of 40V. The engineer recommended testing with the DC2859A evaluation board before designing a custom PCB.

View FAQ
AI Generated Content
Category: Hardware
Product Number: LTM8083

Many of the LTM micro modules can be configured as an inverter to generate a negative voltage from a positive supply, and usually there are some example circuits given for how this should be set up.

However, there is no inverting example circuit for the LTM8083.

In LTspice, if I take the example circuit and minimally re-configure it for inverting output as below, it does appear to work well.

Would this circuit (attached and also shown in the image below) also work reliably in practice? Or are there some issues with this circuit?

What kind of de-rating or performance limitation would apply, usually the inverting configuration can output less power?

LTM8083-inverting.asc