Micron Technology ClinicMicron Technology Clinic

Evaluation of Integrated Circuit Evaluation of Integrated Circuit Power Supply Noise with Power Supply Noise with

Two-Phase AnalysisTwo-Phase Analysis

Sze-Hsiang Harper, Michael Tomer, Kristian Sze-Hsiang Harper, Michael Tomer, Kristian Blomquist,Blomquist,

Jason Oneida, Ammon HardcastleJason Oneida, Ammon Hardcastle

Advisor: Dr. Ken StevensAdvisor: Dr. Ken Stevens

Micron Technology ClinicMicron Technology Clinic

Evaluation of Integrated Circuit Evaluation of Integrated Circuit Power Supply Noise with Power Supply Noise with

Two-Phase AnalysisTwo-Phase Analysis

Presentation OrderPresentation Order

Sze-Hsiang HarperSze-Hsiang Harper

Michael TomerMichael Tomer

Kristian BlomquistKristian Blomquist

Jason Oneida Jason Oneida

Ammon HardcastleAmmon Hardcastle

Micron Technology ClinicMicron Technology Clinic

Analysis of the Two-Phase Power Analysis of the Two-Phase Power Estimation Method Using HSIMPlus Estimation Method Using HSIMPlus

and HSPICEand HSPICE

Presented by: Sze-Hsiang HarperPresented by: Sze-Hsiang Harper

Advisor: Dr. Ken StevensAdvisor: Dr. Ken Stevens

OverviewOverview► BackgroundBackground

Integrated Circuit PowerIntegrated Circuit Power Power Delivery NetworkPower Delivery Network

► ProblemsProblems► SolutionSolution

Industry Tools Industry Tools

► Estimation MethodEstimation Method HSIMPlusHSIMPlus HSPICEHSPICE

► Project Preview Project Preview ► ConclusionConclusion

Integrated Circuit PowerIntegrated Circuit Power

Taken from “Micron Proposal 09” by Tim Hollis

Power Delivery Network (PDN)Power Delivery Network (PDN)

►Power Delivery Network Power Delivery Network (PDN)(PDN)

►Characteristic of a PDN Characteristic of a PDN should provide a good should provide a good complex multi-stage complex multi-stage network supplying network supplying power to all devices in power to all devices in a systema system

Taken from “Micron Proposal 09” by Tim Hollis

Vdd

Vss

On-Chip Power Delivery

Ideal and Functional PDNIdeal and Functional PDN

► Ideal and Functional PDN will:Ideal and Functional PDN will: Deliver clean power to the Integrated Deliver clean power to the Integrated

CircuitsCircuits Provide low impedance and low noise Provide low impedance and low noise

reference path for signalsreference path for signals Does not contribute excessive Does not contribute excessive

Electromagnetic InterferenceElectromagnetic Interference

Ideal PDN vs. Non-Ideal PDNIdeal PDN vs. Non-Ideal PDN

Taken from micron proposal 09” by Tim Hollis

Problems Problems

►Transistors are faster but they operate Transistors are faster but they operate at a lower voltage supply and at a at a lower voltage supply and at a higher overall chip powerhigher overall chip power

►To fully simulate billions of transistors To fully simulate billions of transistors on the circuits requires an extreme on the circuits requires an extreme amount of timeamount of time

►Circuits need to be analyzed to ensure Circuits need to be analyzed to ensure the circuit will operate reliably and the circuit will operate reliably and their simulations are accurate their simulations are accurate

Current Solution in IndustryCurrent Solution in Industry► Model order reduction required due to design complexity.Model order reduction required due to design complexity.► “ “Two-Phase" (or two-pass) method employedTwo-Phase" (or two-pass) method employed

Vcc

Gnd Gnd

ICkt

+

V

-

ZPDN

Vcc

Phase 1 : Phase 2:

ICkt

Current Industry ToolsCurrent Industry Tools

►Apache Apache TotemTotem Chip Power Model (CPM)Chip Power Model (CPM) Redhawk ToolsRedhawk Tools

►Cadence’s VoltageStormCadence’s VoltageStorm►Synopsys’ HSIMPlusSynopsys’ HSIMPlus►Hynix Semiconductor Hynix Semiconductor

HSPICEHSPICE

►HSPICE is the industry's "gold HSPICE is the industry's "gold standard" for accurate circuit standard" for accurate circuit simulation and offers foundry-certified simulation and offers foundry-certified MOS device models with state-of-the-MOS device models with state-of-the-art simulation and analysis algorithms. art simulation and analysis algorithms.

HSIMPlusHSIMPlus

►HSIMPlus provides a complete set of HSIMPlus provides a complete set of analysis tools for device-level and analysis tools for device-level and interconnect reliability analysisinterconnect reliability analysis

►HSIMPlus has Two-phase Method HSIMPlus has Two-phase Method applied by it’s Power Net Reliability applied by it’s Power Net Reliability Analysis (PWRA) tool.Analysis (PWRA) tool.

ApproachApproach

Project Preview Project Preview Output with Single Layer Package vs. Output with Single Layer Package vs. Output without Package in HSIMPlusOutput without Package in HSIMPlus

Project PreviewProject Preview Output with Single Layer Package vs Output with Single Layer Package vs

Output Without Package in HSPICEOutput Without Package in HSPICE

ConclusionConclusion►Power delivery noise affects the Power delivery noise affects the

performance and correctness of our performance and correctness of our circuitscircuits

►Evaluated the runtime and accuracy of HSPICE vs. HSIMPlus with various configurations Too complex a problem to simulate with Too complex a problem to simulate with

accurate tools (HSPICE)accurate tools (HSPICE) Model order reduction tools introduce some Model order reduction tools introduce some

error (HSimPlus)error (HSimPlus)