Infineon Technologies AG DC-DC Converters, Integrated Smart Power Stages TDA21535

35 A OptiMOS™ power stage with Integrated current sense The TDA21535 OptiMOS™ power stage contains a low quiescent-current synchronous buck gate-driver IC co-packaged with high-side and low-side MOSFETs and an active diode structure that achieves low Vsd similar to a Schottky with very little reverse recovery charge. The TDA21535 power stage forms a complete low voltage, high power DC/DC regulator when used with Infineon multiphase controller ICs. The TDA21535 internal MOSFET current sense algorithm with temperature compensation achieves superior current sense accuracy versus best-in-class controller-based inductor DCR sense methods. Operation at switching frequency as high as 1.5 MHz enables high performance transient response, allowing reduction of output inductance and output capacitance while maintaining industry leading efficiency. Summary of Features Co-packaged driver, high-side and low-side MOSFETs and active diode structure 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 0.225 V up to 5.5 V On-chip MOSFET current sensing and reporting with 5 µA/A gain 35 A operating current with 61 A Output Over-Current Protection (OCP) capability Operation up to 1.5 MHz High-side MOSFET short detection and flag Thermal shutdown Cycle-by-cycle over current protection and fault flag Auto-sleep and Deep-sleep mode for power saving Compatible with 3.3-V tri-state PWM input 4 mm x 5 mm x 0.9 mm PQFN package Benefits Higher efficiency at the lower output voltages enabled by the Gate Driver and MOSFET combination Accurate current reporting to improve system level performance Current and temperature fault monitoring for a more robust system Bootstrap capacitor under-voltage monitoring and auto-replenishment for a more robust system Optimized PCB layout, heat, transfer, driver/MOSFET control timing, and minimal switch node ringing when layout guidelines are followed Potential Applications High frequency, low profile dc-dc converters Voltage Regulators for CPUs, GPUs, and DDR memory arrays Computing Server Telecom Datacom Graphics Applications 48 V intermediate bus converter (IBC) Data center and AI data center solutions Edge computing Telecommunication infrastructure Designers who used this product also designed with IR3888AMTRPBF | Integrated POL Voltage Regulators CY62148EV30LL-45BVXI T | Asynchronous SRAM IR3888BMTRPBF | Integrated POL Voltage Regulators SLB 9670VQ2.0 | OPTIGA™ TPM - Trusted Platform Module XDPE12284C-0000 | Digital Multiphase Controllers XDPE15254D-0000 | Digital Multiphase Controllers IR3889MTRPBF | Integrated POL Voltage Regulators IR3888AMTRPBF | Integrated POL Voltage Regulators CY62148EV30LL-45BVXI T | Asynchronous SRAM IR3888BMTRPBF | Integrated POL Voltage Regulators SLB 9670VQ2.0 | OPTIGA™ TPM - Trusted Platform Module XDPE12284C-0000 | Digital Multiphase Controllers XDPE15254D-0000 | Digital Multiphase Controllers IR3889MTRPBF | Integrated POL Voltage Regulators IR3888AMTRPBF | Integrated POL Voltage Regulators 1 2