Infineon TDA21520AUMA1, 20 A, 4.25V 25-Pin, PQFN

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.

High-side MOSFET short detection and flag
Thermal shutdown
Cycle-by-cycle over current protection and fault flag
Auto-sleep and deep-sleep mode for power saving
Compatible with 3.3-V tristate PWM input
Accurate current reporting to improve system level performance
Current and temperature fault monitoring for a more robust system