TDA21490 TM OptiMOS Power Stage TDA21490 1 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 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. 2 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 Please read the Important Notice and Warnings at the end of this document <Revision 2.0> www.infineon.com <2020-12-01> TM OptiMOS Powerstage TDA21490 Pinout Compatible with 3.3-V tri-state PWM input Body-Braking load transient support Small 5 mm x 6 mm x 1 mm PQFN package Lead free RoHS compliant package Table 1 Product Identification Base Part Number Temp Range Package Orderable Part Number TDA21490 -40 C to 125 C PQFN 5 mm x 6 mm TDA21490AUMA1 Product Marking TDA21490 Data Matrix Code Assembly Site and Lot Code AXXX H Date Code YY=Year, WW=Week Figure 1 Picture of the Product 3 Pinout Figure 2 Pinout, Numbering and Name of Pins (transparent top view) 2 <Revision 2.0> <2020-12-01>