TDA21490
Infineon Technologies
Optimos Powerstage
Package Type: 5x 6x 1 mm PQFN
The TDA21490 power stage contains a low quiescent-current synchronous buck gate-driver IC co-packaged with high-side and low-side MOSFETs. The package is optimized for PCB layout, heat transfer, driver/MOSFET control timing, and minimal switch node ringing when layout guidelines are followed. The gate driver and MOSFET combination enables higher efficiency at the lower output voltages required by cutting edge CPU, GPU and DDR memory designs. The TDA21490 internal MOSFET current sense algorithm with temperature compensation achieves superior current sense accuracy versus best-in-class controller-based inductor DCR sense methods. Protection includes cycle-by-cycle over-current protection with programmable threshold, VCC/VDRV UVLO protection, bootstrap capacitor under-voltage protection, phase fault detection, IC temperature reporting and thermal shutdown. The TDA21490 also features auto-replenishment of the bootstrap capacitor to prevent over-discharging. The TDA21490 features a deep-sleep power saving mode, which greatly reduces the power consumption when the multiphase system enters PS3/PS4 mode. Operation at switching frequency as high as 1.5 MHz enables high performance transient response, allowing reduction of output inductance and output capacitance values while maintaining industry leading efficiency. The TDA21490 is optimized for CPU core power delivery in server applications. The ability to meet the stringent requirements of the server market also makes the TDA21490 ideally suited for powering GPU and DDR memory designs.
Datasheet
