TPS53840
- Compliant to JEDEC PMIC5020 for DDR5 MRDIMM and RDIMM
- 4 Buck regulators
- SWA (1.1V) 8.5A DC/10A Pk
- SWB (1.1V) 8.5A DC/10A Pk
- SWC (1.1V) 10A DC/11.5A Pk
- SWD (1.8V) 3A DC/3.5A Pk
- Single or dual phase for SWA and SWB
- 2 LDO: 1.8V / 25mA and 1.0V / 20mA
- VIN_Bulk (4.25V to 15V) and VIN_Mgmt (3.0V to 3.6V) input supplies
- Automatic switchover from VIN_Mgmt to VIN_Bulk
- Overvoltage, under voltage, over current, temperature warning and temperature shutdown
- Error injection capability
- DIMM specific registers for customization (EEPROM)
- Persistent error log registers
- Programmable switching frequency: 500kHz to 1.375MHz
- Power good pin (CAMP) and General status interrupt pin (GSI_n)
- I2C and I3C Bus interface for telemetry of voltage, current, power, temperature, and fault conditions
- Enable with I2C/I3C, VR_EN pin or Auto power on
- 5mm × 5mm, 35-Pin, QFN PowerPad™ package
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.
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技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS53840 Integrated Step-Down Converter for DDR5 MRDIMM Server Power Supply datasheet | PDF | HTML | 2024年 4月 30日 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| VQFN-HR (RWZ) | 35 | Ultra Librarian |
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