DC/DC Power Conversion for Datacenter, Open Compute & AI … · 2020. 10. 16. · Figure 3: 48V Power Structure – MPS 10V to 5V System 5 48V Power Structure: Reutilize a 12V Legacy

48V Datacenter SolutionsDC/DC Power Conversion for Datacenter, Open Compute & AI Applications

Overview................................................................................................................MPS 48V Power Structure....................................................................................First-Stage Solution: Power Modules..................................................................Second-Stage Solution: Digital Multi-Phase Controller + Intelli-PhaseTM ........MPS 48V Datacenter Solutions.............................................................................Quality Assurance.................................................................................................About MPS............................................................................................................Contact & Ordering...............................................................................................

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Table of Contents

OverviewToday’s datacenters use an average of 3kW to 5kW per rack to power server, storage, and networking racks. Most are designed to power basic CPUs to operate at high levels of efficiency. Hence, the traditional 12V power architecture has been widely accepted and implemented (see Figure 1).

As the demand for cloud computing, AI applications, and high-power processors and accelerators grows, datacenters are evolving to accommodate new high-power requirements. For example, an early AI market supercomputer required 3200W for the entire power system. The second generation’s power demand increased threefold, resulting in 10kW for the entire power system. Since the power lost in distributing high current increases by the square of the current (I2R), more copper must be used in the backplane or wiring harness to control the distribution losses. Ultimately, this limits the power delivery of the system.

In order to meet the industry’s new power requirements, MPS has developed a new power architecture, using a 48V distribution voltage that is capable of a 16x reduction in power distribution losses, in addition to presenting a 48V datacenter solution to address new design challenges.

3

Over

view

Figure 1: Traditional 12V Power Distribution

12V BUS

DDR VR

DDR

Core

DDR

DDR VR

Other…

CU VR(s)

Second Stage:

4.8V BUS

(Range: 4V to 6V)

48V BUS

First Stage:

(Range: 4V to 6V)

DDR DDR OtherCore

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS Digital

Multi-Phase Controller

MPS Power Modules

48V 4V–6V LLC

Figure 2: 48V Power Structure – MPS 4V to 6V System

MPS 48V Power Structure48V Power Structure: MPS’s New 48V to 4.8V System

4

MPS

48V

Pow

er S

truc

ture

• First-stage solution: MPS LLC Power Modules

• Second-stage solution: Digital multi-phase controller + low-voltage Intelli-PhaseTM

○ 10:1 input-to-output ratio ○ Offered at various power levels ○ Parallel operation

○ Low-voltage Intelli-PhaseTM products use patented technologies to boost performance including efficiency, power density, and overall performance while reducing losses from the power delivery network (PDN)

○ Low-voltage Intelli-PhaseTM devices offer MPS’s proprietary footprint, which helps reduce overall solution size

Intelli-PhaseTM is MPS’s state-of-the-art power stage. MPS’s DrMOS uses our monolithic process to drastically improve performance, and incorporates advanced features, including current sense, temperature sense, and fault reporting.

• Total system efficiency is greatly optimized

Figure 3: 48V Power Structure – MPS 10V to 5V System

5

48V Power Structure: Reutilize a 12V Legacy System

• Easiest method for 48V migration, as it can reuse an existing 12V system

• Second-stage solution: Digital multi-phase controller + Intelli-PhaseTM ○ As part of the MPS portfolio, the Intelli-PhaseTM family offers continuous current ratings

up to 90A ○ Intelli-PhaseTM devices are offered in a common footprint or an MPS proprietary footprint

MPS

48V

Pow

er S

truc

ture

• First-stage solution: MPS LLC Power Modules, 4:1 input-to-output ratio or 4:1 STC topology

48V BUSFirst Stage: (Range:40-60V)

MPS Digital


48V BUS

First Stage: (Range: 40V to 60V)

Se�ond Stage:

12V BUS

(Range: 10V to 15V)

DDR DDR OtherCore

MPS Power Modules

48V 10V–15V LLC

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

Topologies for 48V-to-12V ConversionTwo commonly seen topologies for 48V-to-12V conversion are LLC and STC. An LLC (inductor-inductor-capacitor) is a resonant topology comprised of two inductors and one capacitor. It allows for zero-current switching of the main switches, thereby dramatically lowering switching losses and boosting efficiency. Figure 4 shows an example of an LLC resonant converter.

An STC (switched-tank capacitor) is another resonant topology that primarily uses a network of capacitors to step down from a 48V input to 12V output. Figure 5 shows an example of an STC converter.

Figure 5: STC Converter

48V/N48V

Figure 4: LLC Converter

n:1

RESONANT NETWORK

VD

IP

LR

CR

RO

IDR2

VO

+

-

Q1

Q2

VIN+-

LLC and STC Comparison

LLC STC

Good for any current/power level applications

Overall performance: - High power density - Low PDN Loss - Efficiency when using a 10:1 power

Scalable and interchangeable

Smaller overall solution size

Good for applications below 500W

Overall performance: - Lower power density - Higher PDN loss - Comparable efficiency to a 4:1 LLC

Well-understood topology

Larger overall solution size

6

Topo

logi

es

First-Stage Solution: Power Modules

The MPC1100-54 is an open-frame digital DC/DC power module with continuous power, up to 300W (see Figure 6). This module accepts up to a 60V input, and is configured in a 10:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system requirements.

Dimensions27mmx18mmx6mm

Features• VIN Range: 40V to 60V• 10:1 Input-to-Output Ratio• Power Level: Up to 300W• Power Density: 1700W/in3 • LLC Topology• PMBus/I2C-Compliant• Supports Parallel Operation• Built-In MTP to Store Custom Configurations

• GUI Configuration Software Provided• Great for High-Current and High-Power Applications• Pin-to-Pin Compatible with the MPC1102-54

○ VIN UVLO ○ VOUT OVP/UVP ○ OCP_TDC/SPIKE ○ OTP

7

MPC1100-54 – High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 300W Power Module

Figure 6: MPC1100-54-xxxx

Firs

t-St

age

Solu

tion

Part Number VIN (V) VOUT Range (V) Power Density (W/in3)

POUT (W) Peak Efficency (%)

Efficiency @ 300W (%)

MPC1100-54-xxxx 40 to 60 4 to 6 1700 300 97.2 96.7

The MPC1102-54 is an open-frame digital DC/DC power module with continuous power, up to 500W (see Figure 7).This module accepts up to a 60V input, and is configured in a 10:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system requirements.

8

MPC1102-54 – High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 500W Power Module


Features

• GUI Configuration Software Provided• Great for High-Current and High-Power

Applications• Pin-to-Pin Compatible with the MPC1100-54

• VIN Range: 40V to 60V• 10:1 Input-to-Output Ratio• Power Level: Up to 500W• Power Density: 2810W/in3 • LLC Topology• PMBus/I2C-Compliant• Supports Parallel Operation• Built-In MTP to Store Custom Configurations


Figure 7: MPC1102-54-xxxx

Peak Efficency (%)


POUT (W) Efficiency (%)

MPC1102-54-xxxx 40 to 60 4 to 6 2810 500 97.2 @ 300W: 97.1 @ 500W: 96.6

9

The MPC11057-54-0750 is an open-frame digital DC/DC power module with continuous power, up to750W (see Figure 8). This module accepts up to a 60V input, and is configured in a 10:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system requirements.


MPC11057-54-0750 – High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 750W Power Module

Features• VIN Range: 40V to 60V• 10:1 Input-to-Output Ratio• Power Level: Up to 750W• Power Density: 1840W/in3• LLC Topology• PMBus/I2C-Compliant• Built-In MTP to Store Custom Configurations


• GUI Configuration Software Provided• Great for High-Current and High-

Power ApplicationsFigure 8: MPC11057-54-0750-xxxx

Peak Efficency (%)


POUT (W) Efficiency @ 750W (%)

MPC11057-54 -0750-xxxx

40 to 60 4 to 6 1840 750 97.6 96.9

The MPC12106-54-0750 is an open-frame digital DC/DC power module with continuous power, up to 750W. This module accepts up to a 60V input, and is configured in a 4:1 input-to-output ratio. It offers a digital controller with multiple-time programmability (MTP), which can be easily configured to quickly bring up the system and nimbly adapt to system requirements.

Dimensions24mmx18mmx8.6mm

MPC12106-54-0750 – High-Efficiency, Non-Isolated, Fixed-Ratio Digital DC/DC 750W Power Module

Features• VIN Range: 40V to 60V• 10:1 Input-to-Output Ratio• Power Level: Up to 750W• Power Density: 3310W/in3• LLC Topology• PMBus/I2C-Compliant• Built-In MTP to Store Custom Configurations


• GUI Configuration Software Provided• Great for High-Current and High-Power Applications

Product Coming Soon Contact MPS for more information

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Peak Efficency (%)


POUT (W) Efficiency @ 750W (%)

MPC12106-54-0750-xxxx

40 to 60 10 to 15 3310 750 98.1 97.5

MPS Digital


Interface to CPU, such as SVID,

SVI, and More

PMBus to Configure f

SW

, Phase

Number, Protection, and More

1

st

Rail

2

nd

Rail

MPS �ntelli-Phase

TM

(DrMS)

MPS �ntelli-Phase

TM

(DrMS)

MPS �ntelli-Phase

TM

(DrMS)

MPS �ntelli-Phase

TM

(DrMS)

Second-Stage Solution: Digital Multi-Phase Controller + Intelli-PhaseTM MPS has a robust product portfolio for digital multi-phase controllers and Intelli-PhaseTM solutions. For more information, visit https://www.monolithicpower.com/en/products/telecom-and-server.html

Digital Multi-Phase Controller Features: Intelli-PhaseTM Features:• Patented Constant-On-Time (COT) Control• Multiple Loops, Flexible Phase Assignment• Interface Options: SVID, SVI2/3, OVR, or

AVSBus and PMBus• Fault Handling and Telemetry Capabilities

• Family of Devices Ranges from 10A to 90A• Wide fSW Range: Balance between

Transient and Efficiency• Built-In ZCD, OCP, NOCP, OTP, and SCP• Minimal External Components

Figure 9: Second-Stage Digital Multi-Phase Controller + Intelli-PhaseTM Block Diagram

11

Seco

nd-S

tage

Sol

utio

n

Power Structure Type of Product

MPS’s new 4V to 6V architecture

Part DescriptionPart Number

12V legacy architecture Intelli-Phase

TM

Intelli-PhaseTM

16V, 70A Intelli-PhaseTM in 5mmx6mm package


MP86956

MP86936

12V legacy & MPS’s new 4V to 6V architecture

Digital multi-phase controller

Single-loop, 10-phase digital multi-phase controller

Dual-loop, 16-phase digital multi-phase controller

Dual-loop, 12-phase digital multi-phase controller

MP2888AMP2882 (contact MPS for samples)MP2973 (contact MPS for samples)



MP86972 (contact MPS for samples)


https://www.monolithicpower.com/en/products/telecom-and-server.html

MPS 48V Datacenter Solutions

MPS has developed a comprehensive product portfolio to address the industry’s new, demanding power requirements. Our 48V datacenter solution was designed to resolve power distribution loss and to maintain high power density and efficiency in space-constrained environments. The table below summarizes a 48V power structure that is a 600W, 20-phase multi-phase power design employing different topologies.

Whether the ultimate decision is to:• Completely redesign using a 48V power architecture, • Migrate from a 12V to a 48V power architecture, or• Reutilize an existing 12V legacy architecture,

12

4:1 LLC + 20-phase 5mmx6mm Intelli-PhaseTM

12V legacy architecture

10:1 LLC + 20-phase 3mmx6mm Intelli-PhaseTM


Power Structure

Topology

4240

1972

Total Size (mm2)

91.3

196.3

Power Density (W/in3)

0.2mΩ

50µΩ

PDN Resistance

72

18

PDN Loss @ 600W (W)

12V to 0.8V: 92.0%

4.8V to 0.8V: 91.1%

Second- Stage Efficiency @ 600W

48V to 12V: 98.0%

48V to 4.8V: 97.4%

First-Stage Efficiency @ 600W

12V to 0.8V: 81.4%

48V to 0.8V:86.4%

Total Efficiency @ 600W (including PDN Loss)

48V to 0.8V:86.4%

48V to 0.8V:81.4%

1972

424012V legacy architecture

Power Structure Total Size (mm2) Total Efficiency


Other MPS Products for 48V Datacenter SolutionsIn addition to servicing high-current and high-power applications, MPS has an extensive product portfolio that includes point-of-load (PoL) step-down converters and protection devices, such as Intelli-Fuse, to fulfill a greater range of power applications needs for 48V datacenter design (see Figure 10).

For more information, visit https://www.monolithicpower.com/en/products/telecom-and-server.html

MPS

Point-of-Load

(Step-Down)

DDR Other

Fan,

etc.

Core

MPS �-Fuse

48V BUSFirst Stage: (Range: 40V to 60V)

Second Stage: 4.8V BUS (Range:4-6V)

Second Stage: 4.8V BUS (Range: 4V to 6V)

MPS Power Modules

48V 4V–6V LLC

MPS Digital


MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

MPS

Intelli-Phase

TM

(DrMOS)

Figure 10: MPS Power Products for 48V Datacenter Design

13

Type of Product Part DescriptionPart Number

Point-of-load (PoL) step-down converter 16V, 12A/20A, synchronous step-down converter with adjustable current limit, programmable frequency, and voltage tracking

16V, 6A, high-efficiency, synchronous step-down converter with adjustable current limit

16V, 30A, scalable, digital, synchronous step-down converter with PMBus Digital, 15A, SVID step-down converter with PMBus for VR13 and IMVP8/9

MPQ8633A/B

MPQ8626

MPQ8645P

MP9940B (contact MPS for samples)

Intelli-Fuse

60V, 15A, 7mΩ RDS(ON) hot-swap Intelli-Fuse solution

16V, 50A, 7mΩ RDS(ON) hot-swap Intelli-Fuse solution16V, 50A, 1.1mΩ RDS(ON) hot-swap Intelli-Fuse solution with PMBus

MP5023


MP5921

https://www.monolithicpower.com/en/products/telecom-and-server.html

Quality Assurance & Reliability CommitmentThe MPS Quality Assurance organization develops, coordinates, and champions strategic quality initiatives throughout MPS Inc., its foundries, and sub-contractors. Its mission is to enable MPS to design, develop, manufacture, and deliver products to our customers with world-class quality and reliability that meet and exceed our customers’ expectations.

• ISO9001:2008 (MPS)• EU RoHS/HF/REACH Compliant (MPS)• Sony Green Partner (MPS & Suppliers)• TS16949 (Suppliers)• ISO14001 (Suppliers)

MPS and Its Supplier Quality Systems and Certificates:

• On-Site Foundry and Assembly Teams for Real-Time Actions• Quarterly Supplier Quality Review and Annual Supplier Audit• Short-Term Reliability Monitor Test – Daily• Long-Term Reliability Monitor Test – Monthly• Real-Time Engineering Actions on Monitor Failure• Quarterly Reliability Monitor Reports

Quality Control and Monitor:

• Automotive Products Qualified per AEC-Q100 Standard• Standard Products Qualified per JEDEC and Military Standard• Reliability Failure Rate

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About MONOLITHIC POWER SYSTEMSAb

out M

ONOL

ITHI

C PO

WER

SYS

TEM

S

Who we areWe are creative thinkers. We break boundaries. We take technology to new levels. As a leading international semiconductor company, Monolithic Power Systems (MPS) creates cutting-edge solutions to improve the quality of life with green, easy-to-use products.

What we doWe make power design fun! With our innovative proprietary technology processes, we thrive on re-imagining and re-de- fining the possibilities of high-performance power solutions in industrial applications, telecom infrastructures, cloud computing, automotive, and consumer applications.

Where we come fromIt started with a vision. Michael Hsing, pioneering engineer and CEO, founded Monolithic Power Systems, Inc. in 1997 with the belief that an entire power system could be integrated onto a single chip. Under his leadership, MPS has succeeded not only in developing a monolithic power module that truly integrates an entire power system in a single package, but also it continues to defy industry expectations with its patented groundbreaking technologies.

Our valuesWe cultivate creativity.As a company we believe in creating an environment that encourages and challenges our employees to collaborate and think outside the box to excel beyond their preconceived capabilities.

We do not accept the status quo.We do not believe in limitations. It is not about what is, but what can be. Possibilities are endless at MPS.

We are passionate about sustainability.It’s about the future. From materials to finances, we are committed to conservation. We will not tolerate waste in an effort to improve and preserve the quality of life.

We are committed to providing innovative products to our customers.Let us do the heavy lifting. We relentlessly strive to make system design versatile and effortless to meet our customers’specific needs. We’ll do the work, so our customers can have the fun!

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Online Order Support:[email protected]

Need more?For product datasheets,evaluation kits, and application support information, visitMonolithicPower.com

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DC/DC Power Conversion for Datacenter, Open Compute & AI … · 2020. 10. 16. · Figure 3: 48V Power Structure – MPS 10V to 5V System 5 48V Power Structure: Reutilize a 12V Legacy