SNVSC22B October 2023 – June 2024 LM51772
PRODUCTION DATA
The device features an internal error amplifier (EA) to regulate the output voltage. The output voltage gets sensed on the FB-pin. The reference for the EA is supplied via the soft-start and VO tracking pins. The COMP-pin is the output of the gm-stage and gets connected to the external compensation network.
Due to the selected implementation of the error amplifier, the voltage on the LM51772 COMP pin, is in steady-state, accurately reflecting the nominal peak-current value of the inductor.
The Figure 7-18 shoes the control V/I-characteristics of the error amplifier in fPWM mode. You can use this as a guidance for applicative designs where you need to manipulate the inner current loop regulation.