www.epc-co.com 1 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Efficient Power Conversion Corporation

The eGaN® FET Journey Continues

www.epc-co.com 2 EPC - The Leader in eGaN® FETs Credit Suisse May 2012 2

• Power Management is a large and growing market

• Silicon has reached performance limits

• EPC has developed proprietary enhancement-mode GaN technology (eGaN®) that allows EPC’s FETs to broadly replace power MOSFETs

• Manufacturing platform is inherently cost effective, and will quickly be less expensive to produce per area than silicon

Background for Strategy

www.epc-co.com 3 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Why Gallium Nitride?

www.epc-co.com 4 EPC - The Leader in eGaN® FETs Credit Suisse May 2012 4

eGaN® FETs are Smaller

200V GaN Device (25 milli Ohms)

200V Silicon Device (30 milli Ohms)

www.epc-co.com 5 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

eGaN® FETs are Faster

0

100

200

300

400

500

EPC2001 BSC109N10NS3 IRFH5030 SiR870DP FDMS86101

FOM = Rdson x Qg (100V)

Source: Infineon, International Rectifier, Siliconix, and Fairchild data sheets

www.epc-co.com 6 EPC - The Leader in eGaN® FETs Credit Suisse May 2012 6

eGaN® FETs are More Efficient

Efficiency comparison @ 12 VOUT

Source: EPC and Ericsson

www.epc-co.com 7 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

eGaN® FETs Can Be Cheaper

Starting Material Epi Growth Wafer Fab Test Assembly

OVERALL

2011 2015

same same

higher same same lower

lower same lower

~same

lower higher

Source: EPC

www.epc-co.com 8 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Market Forecasts

www.epc-co.com 9 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

0%

10%

20%

30%

40%

50%

4% 5% 6% 7% 8%

Perc

ent S

hare

of 2

010

Pow

er T

rans

isto

r M

arke

t

2010-2015 CAGR

Served Available Market (SAM)

Total = $12B in 2015 Source: IC Insights

Power FET (up to 200V)

$4.6B

IGBT modules $2.3B

IGBTs $878M

Power FET (over 200V)

$1.7B RF/Microwave $1.3B

Bipolar $970M

Bipolar Modules $49M

FET Modules $232M

www.epc-co.com 10 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Power ICs Add to the SAM

Total = $18B in 2015

$0

$2

$4

$6

$8

$10

$12

$14

$16

$18M

arke

t Siz

e ($

B)

Transistors

Power Module

Power IC

Source: Yole Development

www.epc-co.com 11 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

GaN Market Projection

Total = $350M for GaN in 2015

Source: Yole Development

www.epc-co.com 12 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Key Applications 2011-2013

• Wireless Power Transmission • RF DC-DC “Envelope Tracking” • Power Over Ethernet • RF Transmission • Network and Server Power Supplies • Power Factor Correction • Point of Load Modules • Solar Microinverters • Energy Efficient Lighting • UPS Systems • Class D Audio • RadHard

www.epc-co.com 13 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Key Applications 2013-2016

• PC and Notebook Power Supply • Appliance and Industrial Motor Drive • Cell Phones • Electric Bicycle • Hybrid and Electric Vehicles

www.epc-co.com 14 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Efficient Power Conversion

www.epc-co.com 15 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

EPC Leadership Team

Alexander Lidow Ph.D: PhD Stanford 1977 Co-Inventor of HEXFET Transistor CEO of International Rectifier 1995-2007 Joe Cao Ph.D: PhD Berkeley 1996 Power MOSFET and GaN Experience at International Rectifier Robert A. Beach Ph.D: PhD Caltech 2001 Co-Founded GaNRose to produce gallium nitride transistors Sold GaNRose to International Rectifier in 2003

EPC has a total of 20 full time employees, 10 of whom have PhDs in closely related fields

www.epc-co.com 16 EPC - The Leader in eGaN® FETs Credit Suisse May 2012 16

EPC Supply Chain

Epi & Wafer Fab

WAT & Sample Probe Bump

Saw

QA & Visual

Pack Ship

Episil

Invoice

EPC has designed a supply chain that is mature, efficient, responsive, and can ramp quickly

Final Test

KYEC

www.epc-co.com 17 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Strategic Partners

Texas Instruments – Driver ICs

Microsemi – Hi Rel and Radiation Hard Transistors

www.epc-co.com 18 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Silicon Power MOSFETs

Infineon

Vishay

International Rectifier (IR)

Fairchild

Renasas

Ciclon/TI

Competitive Strategy

GaN Devices

IR Transphorm MicroGaN GaN Systems Fujitsu

www.epc-co.com 19 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Selected Awards

EE Times 2010 Green Technology ACE Award

LM5113

www.epc-co.com 20 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

Summary

• EPC is privately funded and just concluded a D-Round of financing

• eGaN® technology is disruptive • Management is the most experienced in the

power industry • EPC’s supply chain is mature • TI and Microsemi are helping to establish EPC’s

eGaN FETs as industry standards • EPC is now shipping eGaN FETs to > 500

customers worldwide

www.epc-co.com 21 EPC - The Leader in eGaN® FETs Credit Suisse May 2012

The end of the road for silicon…..

is the beginning of

the eGaN FET journey!