The TPSM8S6C24 devices are designed to operate from split input voltage supplies. AVIN is designed to operate from 2.95 V to 18 V. AVIN must be powered to enable POR, PMBus communication, or output conversion. For AVIN voltages less than 4 V, VDD5 must be supplied with an input voltage greater than 4 V to enable switching. PVIN is designed to operate from 2.95 V to 16 V. PVIN must be powered to enable switching, but not for POR or PMBus communication. The TPSM8S6C24 can be operated from a single 4-V or higher supply voltage by connecting AVIN to PVIN. TI recommends a 10-Ω resistor between AVIN and PVIN to reduce switching noise on AVIN. See the recommendations in Section 9.4.