TDA21472AUMA1

TDA21472AUMA1 is an Optimos™ power stage. This power stage contains a low quiescent-current synchronous buck gate-driver IC co-packaged with Schottky diode and 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 enable higher efficiency at the lower output voltages required by cutting-edge CPU, GPU, and DDR memory designs. The TDA21472 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, phase fault detection, IC temperature reporting, and thermal shutdown. It also features auto-replenishment of the bootstrap capacitor to prevent over-discharging.

• 5mV/A on-chip MOSFET current sensing with temperature compensated reporting
• Input voltage (VIN) range of 4.25V to 16V, VCC and VDRV supply of 4.25V to 5.5V
• 80A output over-current protection (OCP) capability, operation up to 1.5MHz
• VCC/VDRV under voltage lockout (UVLO), 8mV/°C temperature analog output
• Thermal shutdown and fault flag, MOSFET phase fault detection and flag
• Cycle-by-cycle over current protection with programmable threshold and fault flag
• Auto-replenishment of bootstrap capacitor, deep-sleep mode for power saving
• Compatible with 3.3V tri-state PWM input, body-braking load transient support
• Supply current is 3.2mA typical at (EN= 3.3V, VDRV = VCC = 5V, TJ = 65°C)
• Junction temperature range from -40°C to 150°C, PQFN package