TDA21490AUMA1

The Infineon Technologies TDA21490AUMA1 is a high-frequency, low-profile OptiMOSTM Power Stage designed for voltage regulators in CPUs, GPUs, and high current rails. This device integrates a low quiescent-current synchronous buck gate-driver IC with high-side and low-side MOSFETs in a compact 5 mm x 6 mm PQFN package.

Key electrical specifications include an input voltage range of 4.25 V to 16 V, with VCC and VDRV supply voltages from 4.25 V to 5.5 V. It supports output voltages from 0.25 V up to 5.5 V, with a peak output current capability of 90 A and a DC output current capability of 70 A. The device operates at switching frequencies as high as 1.5 MHz, enabling high performance transient response.

Protection features include cycle-by-cycle over-current protection, VCC/VDRV UVLO, bootstrap capacitor under-voltage protection, phase fault detection, IC temperature reporting, and thermal shutdown. The TDA21490AUMA1 also features auto-replenishment of the bootstrap capacitor and a deep-sleep power saving mode.

Designed for optimal PCB layout and heat transfer, the TDA21490AUMA1 is suitable for CPU core power delivery in server applications, as well as GPU and DDR memory designs. Its surface mountable PQFN package requires careful layout considerations for minimal switch node ringing.