Description：

 High frequency, low profile dc-dc converters

 Voltage Regulators for CPUs, GPUs, and high current rails

The TDA21490 power stage contains a low quiescent-current synchronous buck gate-driver IC co-packaged withhigh-side and low-side MOSFETs. The package is optimized for PCB layout, heat transfer, driver/MOSFET controltiming, and minimal switch node ringing when layout guidelines are followed. The gate driver and MOSFETcombination enables higher efficiency at the lower output voltages required by cutting edge CPU, GPU and DDRmemory designs.The TDA21490 internal MOSFET current sense algorithm with temperature compensation achieves superiorcurrent sense accuracy versus best-in-class controller-based inductor DCR sense methods. Protection includescycle-by-cycle over-current protection with programmable threshold, VCC/VDRV UVLO protection, bootstrapcapacitor under-voltage protection, phase fault detection, IC temperature reporting and thermal shutdown. TheTDA21490 also features auto-replenishment of the bootstrap capacitor to prevent over-discharging. TheTDA21490 features a deep-sleep power saving mode, which greatly reduces the power consumption when themultiphase system enters PS3/PS4 mode.Operation at switching frequency as high as 1.5 MHz enables high performance transient response, allowingreduction 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 stringentrequirements of the server market also makes the TDA21490 ideally suited for powering GPU and DDR memorydesigns.

Features：

 Co-packaged driver, high-side and low-side MOSFETs

 5-mV/A on-chip MOSFET current sensing with temperature compensated reporting

 Input voltage (VIN) range of 4.25 V to 16 V

 VCC and VDRV supply of 4.25 V to 5.5 V

 Output voltage range from 0.25 V up to 5.5 V

 Output peak current capability of 90 A

 Output DC current capability of 70 A

 Operation up to 1.5 MHz

 VCC/VDRV under-voltage lockout (UVLO)

 Bootstrap capacitor under-voltage protection

 8-mV/°C temperature analog output

 Thermal shutdown and fault flag

 Cycle-by-cycle over-current protection with programmable threshold and fault flag

 MOSFET phase fault detection and flag

 Auto-replenishment of bootstrap capacitor

 Deep-sleep mode for power saving