Rack server motherboard

Products and reference designs

Rack server motherboard

Block diagram

Overview

Our integrated circuits and reference designs help you quickly create a rack server motherboard design with higher energy efficiency, density, and fast data computing to support the growth of cloud computing and emerging technologies like artificial intelligence and machine learning.

Design requirements

Next-generation rack server motherboards in the datacenter architecture often require:

  • High DC/DC power conversion and protection.
  • Increased density to meet standard rack and OCP rack size requirements.
  • High-bandwidth data throughputs requiring leading-edge signal processing.

Extend the capabilities of this application

Block diagram

Find products and reference designs for your system.

Rack server motherboard

Power supply unit (PSU) Power supply unit(PSU) JTAG JTAG Platform controller hub (PCH) Platform controller hub (PCH) Voltage reference Voltage reference ESD protection ESD protection PCH uController PCH uController Retimers, redrivers Retimers, redrivers I2C level shifter/repeater I2C level shifter/repeater Little logic Little logic SAS/SATA redriver SAS/SATA redriver PCI/PCIe PHY, bridges PCI/PCIe PHY, bridges USB retimers, redrivers, port controllers USB retimers, redrivers, port controllers eFuse, load switches eFuse, load switches I2C switch I2C switch DC/DC multiphase controller DC/DC multiphase controller JTAG mux JTAGmux Power stage Power stage Clock generator Clock generator Sensing Sensing Temperature sensing Temperature sensing Current sensing Current sensing Memory Memory LDO + multichannel PMIC LDO + multichannel PMIC Power stage Power stage Buck converter single & multi-output Buck converter single & multi-output DC/DC multiphase controller DC/DC multiphase controller DIMM modules DIMM modules CPU CPU DC/DC multiphase controller DC/DC multiphase controller Central processor Central processor Power stage Power stage DC/DC buck converter DC/DC buck converter CPLD/board level sequencer CPLD/board level sequencer Sequencer Sequencer CPLD controller CPLDcontroller Voltage level translation Voltage level translation Board management controller (BMC) Board management controller (BMC) RS-232 RS-232 Voltage level translation Voltage level translation BMC uController BMC uController Little logic Little logic ESD protection ESD protection Clock buffer Clock buffer Ethernet PHY, bridges & retimers Ethernet PHY, bridges & retimers Video, SPI mux Video, SPI mux Oscillator Oscillator ADC ADC System power System power Primary hot swap controller (current protection) Primary hot swap controller (current protection) Standby eFuse Standby eFuse DC/DC buck & multiphase controllers DC/DC buck & multiphase controllers DC/DC buck converters & PMIC DC/DC buck converters & PMIC Sequencer Sequencer MOSFETs MOSFETs Voltage margining and sensing Voltage margining and sensing

Platform controller hub (PCH)

close

The platform controller hub replaces the northbridge and southbridge chipsets which became bottlenecks as the CPU clock speeds started to increase. Some of the functions from these previous chipsets have been distributed between the CPU and the PCH. The PCH controls certain data paths and support functions used in conjunction with Intel CPUs.

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Power management (6)
AC/DC & DC/DC converters (integrated FET)
  • TPS546B264-V to 16-V input, 25-A, PMBus, synchronous step-down converter
    Data sheet: PDF | HTML
  • TPS5682313.8-V to 17-V, 8-A synchronous buck converter with D-CAP3 control
    Data sheet: PDF | HTML
  • TPS548A282.7-V to 16-V, 15-A synchronous buck converter with remote sense and 3-V LDO
    Data sheet: PDF | HTML
  • LM70880-Q1Automotive, high-density, 4.5-V to 80-V input, 8-A low-EMI synchronous DC/DC step-down converter
    Data sheet: PDF | HTML
  • TPS544E274V to 18V input, 40A, PMBus and SVID synchronous step-down converter
    Data sheet: PDF | HTML
  • TPS548B282.7-V to 16-V input, 20-A synchronous step-down converter with remote sense and hiccup current limit
    Data sheet: PDF | HTML
Interface (29)
I2C & I3C level shifters, buffers & hubs
  • TCA39416Ultra-low-voltage I3C translator with rise time accelerators
    Data sheet: PDF | HTML
  • TCA39306FM+ I²C bus and SMBus voltage translator
    Data sheet: PDF | HTML
  • TCA9617A2-bit level-translating 1-MHz I2C/SMBus buffer/repeater
    Data sheet: PDF | HTML
  • TCA98032-bit level-translating 400-kHz I2C/SMBus buffer/repeater with internal 3-mA current source
    Data sheet: PDF | HTML
  • TCA9617B2-bit level-translating 1-MHz I2C/SMBus buffer/repeater with powered-off high-impedance
    Data sheet: PDF | HTML
  • TCA9517A2-bit level-translating 400-kHz I2C/SMBus buffer/repeater with powered-off high-impedance
    Data sheet: PDF | HTML
USB redrivers & multiplexers
  • TMUXHS221USB 2.0 480-Mbps 2:1 multiplexer and 1:2 demultiplexer
    Data sheet: PDF | HTML
  • TUSB1002USB3.1 10Gbps Dual Channel Linear Redriver
    Data sheet: PDF | HTML
  • TUSB216USB 2.0 high speed signal conditioner with DCP and CDP controllers
    Data sheet: PDF | HTML
  • TUSB216IUSB 2.0 high-speed signal conditioner with BC 1.2 controller
    Data sheet: PDF | HTML
  • TS3USB3031DP3T USB 2.0 High-Speed and Mobile High-Definition Link (MHL) (6.5GHz) Switch
    Data sheet: PDF | HTML
  • HD3SS32122-channel 10-Gbps 2:1/1:2 USB 3.1 differential mux/demux
    Data sheet: PDF | HTML
I2C & I3C switches & multiplexers
  • TCA9548A8-channel 1.65- to 5.5-V I2C/SMBus switch with reset & voltage translation
    Data sheet: PDF | HTML
  • TCA9546A4-channel 1.65- to 5.5-V I2C/SMBus switch with reset & voltage translation
    Data sheet: PDF | HTML
  • TCA9545A4-channel 1.65- to 5.5-V I2C/SMBus switch with interrupt, reset & voltage translation
    Data sheet: PDF | HTML
  • TCA9543A2-channel 1.65- to 5.5-V I2C/SMBus switch with interrupt, reset & voltage translation
    Data sheet: PDF | HTML
  • TCA9544A4-channel 1.65- to 5.5-V I2C/SMBus multiplexer with interrupt & voltage translation
    Data sheet: PDF | HTML
PCIe, SAS & SATA ICs
  • SN75LVPE5421PCIe® 5.0 32-Gbps 4-channel linear redriver with integrated 2:1 mux
    Data sheet: PDF | HTML
  • SN75LVPE5412PCIe® 5.0 32-Gbps 4-channel linear redriver with integrated 1:2 demux
    Data sheet: PDF | HTML
  • DS320PR810PCIe® 5.0, 32-Gbps, 8-channel linear redriver
    Data sheet: PDF | HTML
  • DS160PT801PCIe® 4.0 16-Gbps 8-Lane (16-Channel) retimer
    Data sheet: PDF | HTML
  • DS160PR810PCIe® 4.0, 16 Gbps, 8-channel linear redriver
    Data sheet: PDF | HTML
  • DS125BR4012.5/5.0/8.0-Gbps 4-lane PCI Express redriver with equalization & De-Emp
    Data sheet: PDF | HTML
USB hubs & controllers
Ethernet PHYs
  • DP83TC813R-Q1Automotive Low-Power, Small Footprint 100BASE-T1 Ethernet PHY
    Data sheet: PDF | HTML
  • DP83867IRIndustrial temperature, robust gigabit Ethernet PHY transceiver
    Data sheet: PDF | HTML
Clocks & timing (2)
Clock generators
  • LMK3H0102Bulk acoustic wave (BAW)-based PCIe Gen 1 to Gen 7-compliant referenceless clock generator
    Data sheet: PDF | HTML
  • CDCS501Clock driver with optional spread-spectrum clocking
    Data sheet: PDF | HTML
Switches & multiplexers (6)
Analog switches & muxes
  • TMUX1361.4pF on-state capacitance, 3.3V, 2:1 (SPDT), 2-channel analog switch with powered-off protection
    Data sheet: PDF | HTML
  • TMUX15745-V, 2:1 (SPDT), 4-channel analog switch with powered-off protection & 1.8-V input logic
    Data sheet: PDF | HTML
  • TMUX11123-pA on-state leakage current, 5-V, 1:1 (SPST), 4-channel precision switch (4 active high)
    Data sheet: PDF | HTML
  • SN74LVC1G31575-V, 2:1 (SPDT), 1-channel general-purpose analog switch
    Data sheet: PDF | HTML
  • SN74CBTLV32573.3-V, 2:1 (SPDT), 4-channel analog switch with partial-power-down mode
    Data sheet: PDF | HTML
  • TMUX15115-V, 1:1 (SPST), 4-channel analog switch with powered-off protection & 1.8-V input logic
    Data sheet: PDF | HTML
Logic & voltage translation (6)
Noninverting buffers & drivers
Passive and discrete (8)
ESD protection diodes
  • TPD4E05U06Quad 0.5-pF, 5.5-V, ±12-kV ESD protection diode for USB, HDMI & High Speed Interfaces
    Data sheet: PDF | HTML
  • TPD1E10B0910-pF, ±9V, ±20-kV ESD protection diode with 6-A 8/20-uS surge in 0402 Package
    Data sheet: PDF | HTML
  • TPD4E001Quad 1.5-pF, 5.5-V, ±8-kV ESD protection diode with 1-nA max leakage & VCC pin for USB 2.0
    Data sheet: PDF | HTML
  • TPD1E1B041-pF, ±3.6-V, ±30-kV ESD protection diode with 6.3-A 8/20-uS surge & low clamping in 0402 packa
    Data sheet: PDF | HTML
  • ESD122Dual 0.2-pF, ±3.6-V, ±17-kV ESD protection diode for USB Type-C and HDMI 2.0
    Data sheet: PDF | HTML
  • TPD1E10B0612-pF, ±5.5V, ±30-kV ESD protection diode in 0402 and SOD-523 package
    Data sheet: PDF | HTML
TVS diodes
  • TIDM-1000Vienna Rectifier-Based Three Phase Power Factor Correction Reference Design Using C2000 MCU
    Design guide: PDF | HTML Schematic: PDF
Selection guide

Technical documentation

View all 9
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Type Title Date
Analog Design Journal System telemetry: What, why and how? 30 Apr 2014
More literature Advanced Signal Conditioning Made Easy and Efficient 24 Jan 2017
Application note Noise Analysis for High Speed Op Amps (Rev. A) 19 Jan 2005
Application note Point-of-Load Solutions for Data Center App Implementing VR13.HC Vccin Spec (Rev. A) PDF | HTML 18 May 2022
Application note Low Voltage Translation for SPI, UART, RGMII, JTAG Interfaces (Rev. B) PDF | HTML 11 May 2022
Application brief Enabling SPI-Based Flash Memory Expansion by Using Multiplexers (Rev. B) PDF | HTML 10 May 2022
Application note Advanced Linear Repeater Used in PCIe 3.0 Add-in Card Compliance Environment 03 Oct 2014
Application note Achieve 20-A Circuit Protection and Space Efficiency Using Paralleled eFuses 03 Nov 2016
Analog Design Journal The intricacies of signal integrity in high-speed communications 02 May 2016

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