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1 Features

? Single silicon design to support DDR5 applications

? 3 Outputs to supply VDD (1.1V), VDDQ (1.1V) and

VPP (1.8V), with optional 4th Output (VDD2)

? For 3 outputs, 7 A for VDD(SWA dual phase), 3.5

A for VDDQ(SWC) and 3.5 A for VPP(SWD) with 3

outputs

? For 4 outputs, 3.5 A for VDD1(SWA), 3.5 A for

VDD2(SWB), 3.5 A for VDDQ(SWC), and 3.5 A for

VPP(SWD)

? Differential remote sense: VDD, VDDQ, and VPP

? D-CAP+? control for fast transient response

? Wide input voltage: 4.5 V to 15 V

? Programmable internal loop compensation

? Per-phase cycle-by-cycle current limit

? Programmable frequency: 500 kHz to 1.375 MHz

? Support I2C and I3C Bus interface for telemetry

of voltage, current, power, temperature, and fault

conditions

? Overcurrent, overvoltage, over-temperature

protections

? Persistent register (black box) feature

? Low quiescent current

? 5 mm × 5 mm, 35-Pin, QFN PowerPad? package

2 Applications

? DDR5 On-DIMM Power Supply for Server

3 Description

The TPS53832A is D-CAP+? mode integrated stepdown

converter for DDR5 on-DIMM power supply,

which provides VDD, VDDQ and VPP voltages

to the DRAM chips on the DIMM module with

configurable current capability. The high-current rail

can be configured to 2-phase or 2 outputs to supply

up to 7 A (or 3.5A + 3.5 A) current with D-CAP+?

mode control. 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, and output

current. overvoltage, undervoltage, overcurrent limit,

and over-temperature protections are provided as

well.

The TPS53832A is packaged in a thermally-enhanced

35-pin QFN and operates from -40°C to +105°C.