LM60440: Load transient waveform

Hi,

This is a zoomed in waveform of the device from 0% to 100% transient loading. During load transients the output capacitor will be charged and discharged.

If you zoom out long enough (depending on the amount of output caps) you will notice that the output voltage will linearly drop down back to the expected output voltage.

In the case for a 4A to 0A load transient the output voltage is charged but the e-load doesn't help with discharging the voltage so the output voltage will remain relatively high and discharge at the rate of the output capacitors.

Notice how in the next figure (Figre 16) for 2A to 4A load transient, at the transition from 4A to 2A the output output voltage overshoots and then pulls back to expected regulation. This is because the 2A load current is helping to discharge the 4A load current that resulted in the output voltage overshoot.

Regards,

Jimmy 

Hi James,

Unfortunately I don't. 

I suggest taking the EVM to test the device's load transient performance and checking the actual customer's application/schematic solution.

Regards,

Jimmy