LM5143-Q1: BODE plot measurement at nearly 100% duty

William Huang1

Intellectual 260 points

Part Number: LM5143-Q1

Hi TI expert,

In general , we do the bode plot measurement at VR buck/boost mode .

but also necessary to do bode plot measurement at nearly 100% duty mode?

looking forwad kindly reply , thanks.

over 2 years ago

0 Timothy Hegarty over 2 years ago

TI__Guru* 75822 points

Hi William,

You can try the measurement, but the duty cycle variation from the AC injection source may cause saturation (max duty cycle reached, where small-signal analysis no longer applies).

Regards,

Tim

Power management

Power management forum

LM5143-Q1: BODE plot measurement at nearly 100% duty