Catalog
Enhanced high-current PMIC for DDR5 server MRDIMM
Key Features
• Compliant to JEDEC PMIC5020 for DDR5 MRDIMM and RDIMM4 Buck regulatorsSWA (1.1V) 8.5A DC/10A PkSWB (1.1V) 8.5A DC/10A PkSWC (1.1V) 10A DC/11.5A PkSWD (1.8V) 3A DC/3.5A PkSingle or dual phase for SWA and SWB2 LDO: 1.8V / 25mA and 1.0V / 20mAVIN_Bulk (4.25V to 15V) and VIN_Mgmt (3.0V to 3.6V) input suppliesAutomatic switchover from VIN_Mgmt to VIN_BulkOvervoltage, under voltage, over current, temperature warning and temperature shutdownError injection capabilityDIMM specific registers for customization (EEPROM)Persistent error log registersProgrammable switching frequency: 500kHz to 1.375MHzPower good pin (CAMP) and General status interrupt pin (GSI_n)I2C and I3C Bus interface for telemetry of voltage, current, power, temperature, and fault conditionsEnable with I2C/I3C, VR_EN pin or Auto power on5mm × 5mm, 35-Pin, QFN PowerPad™ packageCompliant to JEDEC PMIC5020 for DDR5 MRDIMM and RDIMM4 Buck regulatorsSWA (1.1V) 8.5A DC/10A PkSWB (1.1V) 8.5A DC/10A PkSWC (1.1V) 10A DC/11.5A PkSWD (1.8V) 3A DC/3.5A PkSingle or dual phase for SWA and SWB2 LDO: 1.8V / 25mA and 1.0V / 20mAVIN_Bulk (4.25V to 15V) and VIN_Mgmt (3.0V to 3.6V) input suppliesAutomatic switchover from VIN_Mgmt to VIN_BulkOvervoltage, under voltage, over current, temperature warning and temperature shutdownError injection capabilityDIMM specific registers for customization (EEPROM)Persistent error log registersProgrammable switching frequency: 500kHz to 1.375MHzPower good pin (CAMP) and General status interrupt pin (GSI_n)I2C and I3C Bus interface for telemetry of voltage, current, power, temperature, and fault conditionsEnable with I2C/I3C, VR_EN pin or Auto power on5mm × 5mm, 35-Pin, QFN PowerPad™ package
Description
AI
The TPS53840 is a D-CAP+™ mode integrated step-down converter for DDR5 on-DIMM power supply in servers fully compliant to Jedec PMIC5020. It provides VDD, VDDQ and VPP voltages to the DRAM chips on the DIMM module with configurable current capability. SWA and SWB can be configured to be either a dual phase output (20A) or 2 single outputs (10A each), while SWC is a single phase rail capable of 11.5A. The converter also employs internal compensation for ease of use and reduce external components.
The converter provides a full set of telemetry, including input voltage, output voltage, output current and output power. Protection features include input and output over voltage, input and output undervoltage, buck overcurrent limit, and die over temperature.
TPS53840 with its significantly higher current capability than JEDEC PMIC5000, and configurable Auto power on or VR_EN pin, is suitable for CXL memory module applications.
The TPS53840 is packaged in a thermally-enhanced 35-pin QFN and operates from -40°C to +105°C.
The TPS53840 is a D-CAP+™ mode integrated step-down converter for DDR5 on-DIMM power supply in servers fully compliant to Jedec PMIC5020. It provides VDD, VDDQ and VPP voltages to the DRAM chips on the DIMM module with configurable current capability. SWA and SWB can be configured to be either a dual phase output (20A) or 2 single outputs (10A each), while SWC is a single phase rail capable of 11.5A. The converter also employs internal compensation for ease of use and reduce external components.
The converter provides a full set of telemetry, including input voltage, output voltage, output current and output power. Protection features include input and output over voltage, input and output undervoltage, buck overcurrent limit, and die over temperature.
TPS53840 with its significantly higher current capability than JEDEC PMIC5000, and configurable Auto power on or VR_EN pin, is suitable for CXL memory module applications.
The TPS53840 is packaged in a thermally-enhanced 35-pin QFN and operates from -40°C to +105°C.