General Presentation MicroCool 2016 Matt Reeves

Wolverine has 100+ years history with decades long customer partnerships. In 1935, Wolverine invented the first high performance heat transfer tubes and revolutionized the HVAC commercial chiller industry. Wolverine is the premier heat transfer design partner for OEM’s like Carrier, Trane, Parker, York. Global core markets served: HVAC, Refrigeration & Appliance, Water Heater/Boiler, Process & Chemical, Electronics Cooling.

MicroCool a Division of Wolverine Tube Inc.

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MicroCool Division

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Wolverine® MDT Enhanced Tube MicroCool® MDT Enhanced Flat Plate

The MicroCool® division has leveraged Wolverine’s MDT tube surface enhancement technologies and transferred the technology to flat plates. This technology is used to create baseplates for power electronics, liquid cooled coldplates, two phase evaporators, micro-channel surfaces and much more. In 2013 Microcool launched a catalog line of standard liquid cooled coldplates specifically for the cooling of power electronics, as well as a free on-line coldplate simulator. Today MicroCool continues to innovate and now has the best performing mass produced coldplates on the market. Through smart design and complementary core technologies MicroCool coldplates are also the most cost effective.

MicroCool Locations

• Decatur AL: Headquarters, R&D, Pilot and Low Volume Production • Bend OR: Engineering and Sales • San Diego CA: Engineering and Sales • Shanghai CN: Manufacturing

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MicroCool Global Customer Partnerships

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MicroCool Core Technologies: Micro Deformation Technology (MDT)

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Micro Deformation works like a plow in a field: Our patented tooling moves through ductile materials (typically aluminum or copper) to create fins and pin fins without wasting material or scrap.

Fin pattern range: • Density: 10-100 fins per inch. • Fin thickness: fin thickness = gap • Fin Height: 0.5-6mm

Pin pattern range: • Density: 10-25 fins per inch • Pin thickness: 1.2 - 0.5mm dia and min gap • Pin Height: 1-8mm • Pin pattern is “in line” and not staggered

In line pin fin 12fpi

In line pin fin 20fpi (XP)

MicroCool Core Technologies: Friction Stir Welding (FSW)

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Friction Stir Welding (FSW) is a solid state joining process, meaning frictional heat is generated between the wear-resistant welding tool, and the material of the work pieces. Joining the work pieces together while staying below the melting point. This creates a leak proof seal that is stronger and more reliable than any other cold plate joining method. MicroCool® has become the expert in friction stir welding high conductivity 1100 series aluminum MDT™ pin plates into all types of machined, extruded and cast aluminum alloys.

Major MicroCool Markets

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Solar Inverter Traction Drives Data Center

Wind Inverter Waste Heat Recovery Electric Vehicle MRI amplifier

CPU Cooling

MicroCool Products

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Standard IGBT Coldplates Custom Coldplates

Thermosiphons 2 Phase Evaporators MDT Fin/Pin Plates

Standard Coldplates: 3000 Series Overview

CFD balanced parallel cooling

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The 3000 series coldplates are designed to fit the 10 most common IGBT form factors and layouts on the market today. They can however be easily customized to fit your need. By combining Extruded ‘tubs’, MDT pin fin inside and FSW construction, we can achieve the highest performing, and most cost effective coldplate available today.

Standard Coldplates: 3000 Series Models & Pricing

MDT™ In Line Pin Fin Options: 4mm tall standard in line pin fin (1mm dia/gap) 4mm tall extra performance (XP) in line pin fin (0.5 dia/gap)

Fitting Options: 3/8 NPT G3/8 (BSPP) SAE-6 Electroless Nickel Plating inside and out for fluid compatibility Coldplate length options: Extrusions can be cut to any length, to accommodate multiple IGBT modules.

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*Call for volume pricing

Custom Coldplates

Double Sided

Cast

Large Assemblies

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Custom Extrusions

Coldplate

Typical Cooling Integrated Baseplate

(Infineon HybridPACK 2) MicroCool CAP®

• Requires customer to purchase a heatsink or coldplate

• Requires use of TIM material

• Requires customer to design a ‘tub’ • Requires use of an O-ring. • Potential for corrosion of copper

baseplate is combined with an aluminum tub.

• No TIM

IGBT Module Cooling Methods Compared

• No need for customer to design or purchase cooling

• No O-ring, no TIM, no tub. • Single metal design has no corrosion

potential (all copper or all aluminum)

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TIM O-ring

• No TIM

MicroCool Baseplates and Clad baseplates

MicroCool®-CLAD™ integrated base plate with clad metal

Aluminum fins with copper backing creates a high power copper IGBT module that can be cooled in an automotive style aluminum die cast manifold/tub. No need for Ni plating No chance for galvanic corrosion in aluminum water channel

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2 Phase Evaporators and Thermosiphons

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MicroCool’s dense MDT microchannel fins and pins are perfect for 2 phase evaporator designs of all types: • Pumped refrigerant systems • Compressor based systems • Active and passive thermosiphons

MicroCool Tool™ www.microcooltool.com

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Visit www.microcooltool.com to simulate your coldplate today.

MicroCool VS Copper Tube Coldplate

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3X

4.4X

5.7X

5.9X 4.7X

00.20.40.60.8

11.21.41.6

3 6 9 12 15Flow Rate (l/min)

Pressure Drop (Bar)

MicroCool Copper Tube

33%

34% 30% 24% 29%

0

0.01

0.02

0.03

0.04

0.05

0.06

0.07

3 6 9 12 15Flow Rate (l/min)

Thermal Resistance (C/W)

MicroCool Copper Tube

• 30% less thermal resistance • 5X less pressure drop

Thank You

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Robust FSW Construction MDT® Inside Balanced parallel cooling