The Infineon OptiMOS power stage is integrated power-stage contains a low quiescent current synchronous buck gate-driver IC which is co-packed with control and synchronous MOSFETs along with an active diode structure that achieves low Vsd similar to a Schottky with very little reverse recovery charge. The package is optimized for PCB layout, heat transfer, driver/MOSFET control timing, and minimal switch node ringing when layout guidelines are followed. The paired gate driver and MOSFET combination enables higher efficiency at lower output voltages. The internal MOSFET sensing achieves superior current sense accuracy vs. best-in-class controller-based Inductor DCR sense methods.

On-chip MOSFET current sensing and reporting with 5 μA/A gain
Over temperature protection and thermal shutdown
Cycle-by-cycle over current protection and flag
High-side MOSFET short detection and flag
Auto-replenishment on bootstrap capacitor
Compatible with 3.3 V tristate PWM Input