SNVSB29C October 2018 – June 2021 LM5143-Q1
Connect the MODE to VDDA and FB2 to AGND to configure the LM5143-Q1 for interleaved operation. This disables the channel 2 error amplifier and places it in a high impedance state. The controller is then in a master and slave configuration. Connect COMP1 to COMP2 and SS1 to SS2. Connect FB1 to VDDA for a 3.3-V output and to AGND for a 5-V output. Connect FB1 to an external feedback divider for an output voltage between 0.6 V to 55 V. See Table 8-2 and Figure 8-9.
The LM5143-Q1 in single-output interleaved operation does not support phase shedding when the output voltage is set between 0.6 V to 1.5 V.
|VDDA||Rdivider||AGND||0.6 V to 55 V|