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TECH DRIVEN PRODUCTS:

power conversion efficiency

clean energy generation

automation improvement

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As with most presentations, the following discussion contains forward-looking statements, and our actual results may differ materially from those discussed here. Additional information concerning factors that could cause such a difference can be found in the Company’s Annual Report on Form 10-K, as amended, for the year ended March 31, 2011.

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INNOVATIVE AND GROWING

POWER SEMICONDUCTORS - Pioneer in high power MOSFET, IGBT and Bipolar Power Technologies

ANALOG, MIXED SIGNAL SPECIALIZED ICs, HVICs , MCUs

RF POWER & SYSTEMS

“REAL CASH” profitability, lower operating costs and shareholder equity growth

Multi-disciplined technology: MOS, Bipolar, SOI, DCB, IGBTs, ICs; over 350 patents

Founded in Silicon Valley (1983), with 10 divisions worldwide and over 1000 employees

More than 2500 customers across sectors ranging from telecom, transportation, industrial, medical, consumer, aerospace and renewable energy companies

COMPANY HIGHLIGHTS

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CORPORATE ROADMAP

1983 IXYS

Founded

1989 IXYS Acquired ABB’s

German Semiconductor Division (IXYS

Germany)

1998 IXYS Goes Public

2000 Acquisition of

DEI (IXYS Colorado)

2002 Acquisition of Westcode

Semiconductor Ltd. & Clare, Inc.

2003 Acquisition of Microwave

Technology, Inc.

2009 IXYS CH GmbH

Acquisition of Leadis

business lines (LED/LCD)

2010

Acquisition of Zilog

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END MARKETS IXYS DIVISIONS

Power Semiconductors

(73.2% of total FY11 revenues)

Integrated Circuits/Mixed Signals ICs/MCUs

(19.1% of total FY11 revenues)

RF Power & Systems

(7.7% of total FY11 revenues)

Industrial

Medical

Telecom

Consumer

Transportation

Renewable Energy

Medical

Military/Aerospace

Telecom

Industrial

Telecom

Consumer

Military/Aerospace

Transportation

PRODUCT LINE

OUR TECHNOLOGY

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ELEMENTS OF POWER CONVERSION

Low Voltage

Refined Electricity

High Voltage

Raw Electricity

Diodes

Rectifiers

Thyristors

Modules

MCU

PFC

Control ICs

Opto Feedback

MCU

Digital Control

IGBTs

Power MOSFETs

BiMOSFETs

Thyristors

Modules

Schottky &

Fast Diodes

Modules

Opto

MCU

Sync Rectifier

INPUT CONTROL SWITCHING OUTPUT

IXYS’ FULL SPECTRUM OF POWER CONVERSION PRODUCTS

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Asset Rich: Cash invested internally

Product Base Spans Entire Power Spectrum

Long Life Cycle of Products (10-20 Years) Maximizes Revenues per R&D

Builds lasting customer relationships

Use of Non-Leading Edge Wafer FoundriesFavorable Cost & Availability

Low Cap-Ex Requirements

Balanced Sales Strategy52% of revenue from direct sales; 48% of revenue from distributors

Strong Customer Relationships WorldwideOver 2,500 customers, extensive design wins, sole source relationships

BUSINESS MODEL

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SERVING CUSTOMERS WORLDWIDE Products cover entire power spectrum

Focused direct sales force

Broad sales representative and distributor relationships

IXYS R&D, Manufacturing, Sales & Distribution

External Foundries

GLOBAL FOOTPRINT

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CUSTOMER BASE

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Electrical Energy Costs Increase

Electricity Demand Grows Faster Than Supply

High Demand For Clean, Uninterruptible Power

Voltage Gap Between Supply & Demand

Demand For Higher Power Density & Efficiency

Demand For Mass Transit, HEV & EVs

Demand For LED Lighting

MARKET DYNAMICS FOR GROWTH

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Control to energy generators, power line, motor drives, automation & robotics, factory conveyor belts, process control, RF heating, machine tools and welding

*Sources: 2009 Semiconductors In Process Control, Databeans, Inc. 2/09; Power Semis Motor Ahead, IMS Research 8/08; 2008 Industrial Semiconductor Revenues Overtake Automotive, Semicast Research 5/09)

PORTFOLIO: INDUSTRIALApproximately 50% of IXYS’ revenues stem from the industrial market

Industrial semiconductor market revenues at $22.1 billion in 2008, an 11% increase from 2007*

Test/measure semi market sales at $7.2 billion; Process control with $6.3 billion in sales (2008)*

Growth in semiconductor market for motor drives: $1 billion to $1.3 billion by 2010*

Motor controls, power switch, power supplies, electric utility meters, power management, elevator/escalator controls, factory automation, industrial & lighting controls

Power Semiconductors

Integrated Circuits

Mixed signal/advanced high voltage ICs for VoIP gateway and FIOS

Optically isolated solid state relays for high voltage switching/ power isolation. In integrated telecom & linear opto-couplers.

Wireless base stations, Internet host facilities & storage area networks

Ruggedized high power MOSFETs for telecom power stations

High Linearity Power Amplifiers for 802.11 WiFi and 802.16 WiMAX base station apps.

PORTFOLIO: IT & TELECOM

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Power Semiconductors

Integrated Circuits

RF Power & Systems

IXYS’ products aimed at the critical last inch of the last mile of the global telecom network; technologies for the communications evolution: VoIP, WiMAX, WiFi

Analog ICs market for communication equipment at $10 billion in 2009; $18.4 billion by 2014*

WiMAX semi market revenue to reach $480 million in 2008; growing to $1.2 billion in 2012*

ANALOG ICs Comm. Equipment*

2009 2014BILLIONS

*Sources: 2009 Analog ICs, Databeans, Inc. 4/09; Worldwide WiMAX Semiconductor 2008-2012 Forecast & Analysis, IDC Research 4/08)

Control of high voltage power for defibrillators (portable/hospitals)

MRI, X-Ray, CATs, Lasers

MRI systems

Increasing electronic content

Better image resolution

PORTFOLIO: MEDICAL

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Ultrasound Imaging

Diagnostics

Power Semiconductors

Integrated Circuits

RF Power & Systems

Medical Electronics Market*

BILLIONS

IXYS: Recognized worldwide with FDA approval for MOS power and Bipolar power in defibrillators

*Source: 2009 Medical Semiconductors, Databeans, Inc. 5/09

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PORTFOLIO: MILITARY/AEROSPACE

Satellite Surveillance

Radar Space Applications

Military & Aerospace Semiconductor Market

for 2009*

$2.8 billion

August 2009: BAE Systems contract for MW amplifiers with military elec. specifications/ reliability

20 years in Mil-Aero industry

Upgrade of military aircraft to "energy efficient/smarter" systems utilizing electronic controls

Demand for commercial off-the-shelf power semiconductors and ICs

IXYS products: naval power, radar systems, avionic fly-by-wire and military vehicle electronics

Avionics Controls Ship-to-Shore Communications

Electronic Countermeasures Munitions

Surveillance

Integrated Circuits

RF Power & Systems

*Source: 2009 Semiconductors In Military & Aerospace Electronics, Databeans, Inc. 1/09

PORTFOLIO: TRANSPORTATION

IXYS’ chips in hybrid transportation market (electrified locomotives) in Asia, Africa, Europe, Middle East and Americas

IXYS’ products for hybrid car market include:

ISOPlus™ Direct Copper Bond (DCB)

IGBT power modules for applications in inverters for traction drive systems and converters for high power voltage conversion

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Power Semiconductors

Integrated Circuits

Automotive applications among the largest markets for power ICs

Application-specific devices to account for 75% of worldwide revenue for analog ICs in automotive applications

IXYS has 20-year history in electrified transit – key chip supplier to GM’s first electric roadster, EV1

Global market for auto semis to grow from $20 billion in 2007 to just over $30 billion in 2015.*

Average semi content per light vehicle to grow steadily from $295 in 2007 to $375 in 2015.*

Fastest growing segments of automotive semis: optoelectronics, sensors, logic and processors.

*Sources: Automotive Market For Semiconductors, Semicast Research 4/08

PORTFOLIO: CONSUMER

INCREASED TECH: longer battery life, reg. power quality/reliabilityTHE ANSWER: LED Drivers from IXYS

SMALL/PORTABLE DISPLAYHandheld – backlight & flashFlexible displays – E-inkFor digital cameras, PDAs, cell phones

MEDIUM DISPLAYSLED drivers for backlightingFlexible displaysFor GPS, Net PCs & laptops, E-books

LARGE DISPLAYSFlat panel displays (LCD): LED backlighting Flexible displays - HV driversScreens (computer & television)

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LED & Display Driver ICs

*Source: Displays: Global Markets & Evolving Technologies, BCC Research 2009

SEPTEMBER 2009: IXYS purchased LED and display drivers technology, adding state-of-the-art LED and display ICs to the existing organic IXYS’ product portfolio.

Global electronic display technology expected to be worth $98.6 billion in 2009. Increase to over $174.2 billion in 2014, for a compound annual growth rate (CAGR) of 12.1%.*

PORTFOLIO: LIGHTING & DISPLAY

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LED Driver ICs

Objective: Best In-Class Efficiency & BOM Cost

Value Proposition: Direct LED Temp Control

LED Products

DC to DC Lighting

AC to DC Lighting

IXYS LED/LED IC BENEFITS:

Cost savings, higher luminance performance,reduced energy consumption, long operating life/durable, reduced heat production, smaller package size, safety improvements

LEDs in niche lighting: billboards, architectural, traffic signals and vehicle lighting.

Lighting is the second largest end-use of energy in buildings (22% of total U.S. electrical energy). LED provides energy efficient alternative.

*Source: iSupply Research

BILLIONS

Source: Databeans :“2008 Microcontroller Market Share” (released June 2009), “2009 Microcontrollers” (release March 2009), Semico Research: 3/28/2007 Press Release “MCU Memory Trends: How Much and What Kind”

2008 2013

$8.1B

$14.2B

Market Attributes Projected Worldwide Microcontroller Market (2008 – 2013)

(in USD Billions) Increased use of MCUs by automotive applications (e.g. green vehicles)

Flash MCUs account for the largest share of MCU revenues (58% in 2006)

16-bit segment expected to experience strong growth surpassing 8 bit unit sales in 2011

32-bit segment expected to experience strong growth due to improvements and cost reductions

PORTFOLIO: MICROCONTROLLERS (MCUs)Digital power management is a fast growing application.

With the expected rebound in MCU sales in 2010, IXYS anticipates growth in opportunities for refined power control in many applications.

By introducing MCUs that enable digital power management and embedded control, IXYS will be able to create comprehensive solutions for its diversified customer base.

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PORTFOLIO: MICROCONTROLLERS (MCUs)Complementary business lines and new markets

Industrial: Motor control/power control, security systems, robotics & sensors, power metering

Consumer: Portable electronics, white goods, LCD/LED backlights

Medical: Low power digital controls

IT/Telecom: Modems, routers, VoIP, FIOS, data on power line, server farms

Power Management: Power management, PFC, power grid management, reduction of standby power (“vampire power”)

Transportation/Automotive: Automotive controls, LED lamps, battery power management, HEVs and EVs, electric trains and substations

Renewable Energy: Solar inverters, chargers/energy-harvesting , optimization of PV power

Lighting/Display: Digital controllers for LED lighting, motion light activation, large LED displays

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PORTFOLIO: SOLAR ENERGY

Portable/Consumer Electronics Solar Battery Chargers Battery-Operated Equip.Wireless Sensors/Detection Off-Grid Installation Flame DetectionSunlight/ Light Detection Remote Sensor Installation

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ELECTRIC GRID: Global PV inverter market at $2 billion in 2009; projected $4 billion by 2015.* Electricity supply/demand imbalance lessened with PV.

BATTERY POWER: Battery-powered systems that recharge via AC outlets strain U.S. electricity grid. Need for high-efficiency chargers.

IXYS Solar Bulbs: Solar panel “on a chip” -Generates 4V-8V-12V of electricity – the only in the industry

Solar Battery Chargers

Ensuring DC-AC voltage conversion (to elec. grid) is controlled without power surges/outages. High voltages require extensive power semiconductors.

*Source: Photovoltaic (Solar) Inverters Worldwide 2008, IMS Research 6/09

IXYS’ Proprietary Solar Cells & Bits

Power Semis For Solar Inverters

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PORTFOLIO: WIND ENERGY

IXYS’ WESPACK SCRs: Phase control devices used in thyristor AC regulators to connect the output of the wind generator to the grid; frequency synchronization between wind and fixed grid frequency

IXYS’ Press Pack IGBTs: Mast head converter/inverter or ground-based synchronization element; unrivalled reliability when compared to IGBT plastic module propositions from other suppliers

INVERTER

U.S. market for wind turbine components & systems worth $60.9 billion in 2013.*

Compound Annual Growth Rate between 2008 and 2013 is expected to be 40%.*

IXYS: One of the first suppliers of power semis to wind market, dating to early 1995.

Power Semiconductors

Variable Voltage/Frequency Fixed Voltage/Frequency

*Source: Wind Turbines: The U.S. Market, BCC Research 8/08

VoIP & Internet Communications

Renewable Energy

Clean Tech Products (water/food/gas/waste treatment)

Power Management ICs – HVICs, MCUs

Flat Displays: Flexible, PDP, LCD & Signs

RF Power & MMICs: WiMAX

Automotive Electric Power, HEV, EVs

LED-Based Lighting: Driver ICs

ADDITIONAL GROWTH OPPORTUNITIES

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FINANCIAL UPDATE

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Fiscal year ended March 31,

ANNUAL REVENUES

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REVENUES BY QUARTERIn millions

REVENUE BY PRODUCT/GEOGRAPHY: Q1 FY12

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ICs26.4%

ROW 3.0%

RF Power & Systems – 7.1%

Power Products 75.1%

ICs17.8%

Asia & ROW35.2%

Europe & ME

37.0%

North America

27.8%

REVENUE BY MARKET: Q4 FY10

INDUSTRIAL (incl. renewable energy)

53%

COMM INFRASTRUCTURE

17%

MEDICAL 10%

TRANSPORTATION 4.1%

CONSUMER 5%

OTHER 10.0%

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REVENUE BY MARKET: Q1 FY12OTHER

10.0%

OTHER 11%

TRANSPORTATION 4%

IXYS is a differentiated semiconductor company, focused on power and specialty ICs

Cash Generating Operations

Asset Rich: Cash, Real Estate & Patents

Upside In Traditional & Developing Markets

Diverse Applications, Customers & Products

Undervalued Stock Price

Think High Energy, Think IXYS

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