Summary
Overview
Work History
Education
Skills
Accomplishments
Timeline
Generic

Lokesh Soni

Silicon Power Signoff Engineer
Banaglore

Summary

7 years of Work Experience in Physical design & Power Signoff, Leveraging cross domain knowledge to accomplish tapeout. Currently at Alphawavesemi as Senior Design Engineer. Past experience at Cadence, Inslicorp as Physical Design Engineer.

Overview

6
6
years of professional experience
9
9
years of post-secondary education

Work History

Senior Design Engineer

Alphawave Semi
08.2022 - Current

UCIe Designs:

TSMC N3p

  • Leading Team of 3 people, Analyzing work done by team for all block.
  • Developed & Integrate flow to pipeline with Company Central flow, improving output quality and sanity checks.
  • Integrating Analog IO's which are responsible for data traffic on Lanes.
  • Setting standardization for Input handshake with Different teams & standardizing Vectors generated for specific pattern to avoid any dispute in power no's.
  • Regular feedback for PD Team to fix PG grid in order to encounter demand current.

TSMC 3nm

  • Introduced to UCIe design, Get setup ready for power signoff
  • Get regular EMIR analysis done at 24 Gbps.
  • Understand architecture and get Different pattern Vectors for testing.

Samsung S4X

  • Understand Samsung library to get balance for Timing and Power
  • Introducing Redhawk-SC tool from Ansys for Signoff.
  • Setup flow for Samsung technode and testing rigorously.
  • Analyze for design changes and provide feedback.
  • Optimized project workflows, leading to reduced turnaround times and increased productivity.



HBM Design:

TSMC 3 nm - 4 Channel - 2.5D design

  • Signoff EMIR at high speed 8.4 Gbps, 4+ Ghz clocks with Cadence tools
  • Understanding HBM architecture to analyze different scenarios with accuracy.
  • Analyze EM and Voltage drop at different corners.
  • Understanding Vectors for design to get different scenario power.
  • Get die model to integrate with 2.5d Interposer design.
  • Analyzing each channel for Grid Sanity, TPAD testing.
  • Dealing with analog blocks for Memory operations, clock generators.
  • Coordinates with Different teams for different sets of inputs and get work done.

TSMC 5 nm - 8 Channel, 2.5d Design

  • Introduced to Power Signoff domain, Headstart with IR signoff in Cadence tools
  • Creating Entire flow for Power Signoff for Static & Dynamic analysis
  • Tapeout with high speed design at 7.6 Gbps, 3.6 Ghz.
  • Looking Deep into analog blocks to capture corner case IR issues.
  • Sanity check for Bump Currents, Rail Cap, PG EM, Inputs, Grid robustness, Cap & Current density, Clock Gating, VCD/Power Coverage.
  • Coordinating with Teams for Grid stability, controlling HBM Phy power.


Sr. APPLICATION ENGINEER

Cadence Design System
02.2020 - 06.2022

Samsung 4nm

  • Fixed Timing on high density design with 2M+ inst at 1.2 Ghz
  • Engaged with Pegasus as ISC Flow for Power solutions
  • Hands on with STA to analyze timing with Cadence tool


Samsung 10nm

  • Fixed Timing on high density design with 1M+ inst at 1 Ghz
  • Building Spine clock tree to reduce insertion delay and minimize skew
  • Engaged with Pegasus to address metal fill timing jump at implementation stage
  • Introducing ISC timing closure within implementation stage
  • Hands on with STA to analyze timing with Cadence tool


Samsung 14nm

  • Physical Implementation of multiple block at Main frqn 1 Ghz
  • PPA push for blocks to increase cadence footprint, introducing STA for eco cycles.
  • Introducing M.S clock tree to reduce insertion delay and Implemented Spine clock structure



Physical Design Engineer

Insilicorp Tech
01.2018 - 02.2019

Intel Project at 14nm Technode

  • Examined Pointed issues in UPF for multiple blocks which includes correction of different power strategy's in upf
  • Generate Functional ECO's to implement in design
  • Implementation of the design which includes strategic placement and routing critical nets which stagnated on sides of macros and need to address manually at pre-cts stage

Samsung Project at 8nm

  • Implementation of the design till CTS, Analyzing Memory timing paths.
  • Power Via modification script resolve congestion on Power Mesh
  • Automate region for pipeline flop placement to address custer region issue.
  • Understand Module structure in synthesis to reduce data depth and tweak sdc for PnR input netlist

Samsung Project at 14nm

  • Physical Implementation of blocks majorly to reduce clock insertion delay through building spine clock
  • Implemented customer buffer methodology to address issues in powerDomains
  • Created bus routing for Dense pin memories to control timing & congestion
  • Handle routing congestion
  • Generated ECO's for multiple blocks

Education

Master Of Technology - Microelectronics

B.I.T.S Pilani
Pilani, India
01.2020 - Current

Bachelor Of Engineering - Electronics & Communication

B K Birla Institute of Engineering & Technology
Pilani, India
01.2013 - 04.2017

Skills

EMIR Signoff, Static & Dynamic Analysis, Vectors, Die Model, Mix Signal Analysis,

Experience in various Cadence & Ansys tools

Understanding about STA and setup - hold time and their violations, timing paths, slack and Skew

PHYSICAL DESIGN - Sanity checking, APR (Physical cells, Scan chain reordering, Congestion, IR drop, Halos, Blockages, Crosstalk, EM), Physical Verification (Geometry, Connectivity, Metal Fill Checks

STA - Meta-stability, Path & Net delay calculations, Jitter, Latency, Skew, Timing Exceptions (Half cycle paths, Multicycle paths), PVT Variations, Setup & Hold time violations and removal, CRPR, Generated Clocks, Signal Integrity

TCL - Array, Strings, Procedure, Packages, File Handling

Accomplishments

+VLSI TRAINING CERTIFICATE - INCISE INFOTECH PVT. LTD.

Timeline

Senior Design Engineer

Alphawave Semi
08.2022 - Current

Sr. APPLICATION ENGINEER

Cadence Design System
02.2020 - 06.2022

Master Of Technology - Microelectronics

B.I.T.S Pilani
01.2020 - Current

Physical Design Engineer

Insilicorp Tech
01.2018 - 02.2019

Bachelor Of Engineering - Electronics & Communication

B K Birla Institute of Engineering & Technology
01.2013 - 04.2017
Lokesh SoniSilicon Power Signoff Engineer