integrated power solutionsintegrated power solutions past ... · integrated power...
TRANSCRIPT
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Integrated Power SolutionsIntegrated Power SolutionsPast, Present, and Future
F IBM P S iFor IBM Power Symposium
Mike Good Senior FAEMike Good – Senior FAE
May 11th, 2011
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The PastThe Past….
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• The need for more efficiency in all walks ofThe need for more efficiency in all walks of life is kick started….
• This includes the electronics industry and th ti l d i t ll hi hthe continual drive to smaller, higher performance, and greatly improved ffi iefficiency
• Power Supplies are a logical focal point for energy efficiency improvementgy y p
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Linear Power Supply – Poor Efficiency (Large Heatsink Required)pp y y ( g q )
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Schematic Generation – Old School… Early SMPS
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Development of HEXFET – SMPS Break Through….
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Early Switching Power supplies for DC-DCy g pp
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The PresentThe Present….
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Typical Single Phase DC-DC Switching Power Supply
FETs
Controller + Drivers
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Discrete FETs – Packaging Advancements Reduce Size
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Integrated Power Stage– Driver + FETs
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Point Of Load (POL) Design Simplicity and Size Reduction
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POL Devices Evolving into Smaller and Higher Current Products
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Early Wire Bond Integrated POL Device* Packaging Technology is a big part in driving product integration Packaging Technology is a big part in driving product integration…
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Integrated POL Modules
25mm
10mm
9A DC-DC Converter Module - +12Vin to +0 7 – +5 0 Vo9A DC-DC Converter Module - +12Vin to +0.7 – +5.0 Vo
1915A Module in a 15 x 15mm package
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The FutureThe Future….
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GaN – Power Device Technology Platform
T diti l Si b d FET h h d th i k FOM• Traditional Si based FETs have reached their peak FOM• Gallium Nitride based Transistors set new Standards for FOM• Allows for much higher frequency, denser designs w. very good efficiencies
L C t d R li bl d ti th d i G N Si H t it• Low Cost and Reliable production methods using GaN-on-Si Hetero-epitaxy -Device manufacturing process is CMOS compatible
• Standard high volume production has started
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FOM Requirement for Efficient and Dense Conversion
30 V SiLimit
30 V GaN Target
30 V GaN Limit
30 V GaN Target
Add iedm another slide from Mike’s presentationSimulation
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pSimulation
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Flagship High Frequency LV DC-DC performance
2 Years ago: 5 MHz, Vout = 1.8V
2 years ago 5MHz, 1.8Vout
Today: 5 MHz, Vout = 1.8V
Today: 10 MHz, Vout = 1.8V
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Size Matters… GaN based solution footprint reduction
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Current GaN Based POL Device 6x6 mm
Vin=12V Vout=1 2V fsw=1 2MHz
90%
92%
Vin 12V, Vout 1.2V, fsw 1.2MHz
86%
88%
Silicon Solution 82%
84%
GaN2
Effi i
78%
80%Efficiency
74%
76%
0 5 10 15 20 25 300 5 10 15 20 25 30Current (A)
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GaN Power Stage Roadmap
* Size and Efficiency Improvements for a 100A, 12V – 1.2V Multi-phase DC- DC Converter
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Frequency Requirements for Dense Power Conversion
* Higher Power Densities leading towards direct Vcore Power Generation from the Processor Logic with cavity filled power delivery…
100 to 300 Ain 200 to 300 mm2
(CPU die)= 30 to 150 A/cm2= 30 to 150 A/cm2
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Processor Core Power (Integrated Power Stages)ocesso Co e o e ( teg ated o e Stages)
(Direct PWM Control)
Why? Smaller size lower cost lower power impedance less losses simplified layoutWhy? – Smaller size, lower cost, lower power impedance, less losses, simplified layout ….
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Processor Core Arrayocesso Co e ay
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Increased Power Densities – New Product Evolution
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Increased Power Densities – New Product Evolution (Cont.)( )
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Increased Power Densities – New Product Evolution (Cont.)( )
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Increased Power Densities – New Product Evolution (Cont.)( )