RF Power - Freescale Semiconductor

Modernizing RF and Microwave
Power Applications
Solid State Heating Solutions
FTF-IND-F0408
DEC.04.2014
Steve Johnson | RF Product Marketing
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Agenda
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Freescale RF Power Introduction
•
Microwave Cooking Fundamentals
•
Implications For Microwave Cooking
•
New Product Announcements
•
RF Power Tool
•
Freescale’s Heating and Cooking Ecosystem
•
Summary and More Information
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RF Power: In Your Daily Life
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Amplify RF Signals and Deliver:
−
High Linearity
− High Power
− High Efficiency
− Extreme Reliability in punishing
environments

In continuous & pulsed mode

From 2.8 MHz to 4 GHz

From 0.1W to 1.25kW
Healthcare
Cooking
Cellular
FM Radio
Air Traffic Control
Wafer Plasma Etch
Non-Cellular
Our Products
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Freescale Leads Industry In RF Power Innovation
Innovative
Application
of RF
Power
Modernization of
RF Power
BILLIONS
Watts/Year
Delivered
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Freescale RF Power Leadership
#1 market share position
Leader in performance and ruggedness
Technology Pioneer
1st to introduce LDMOS
1st with over-molded plastic packaging
1st with multi-staged, high power RFICs
Undisputed manufacturing reliability and consistency
Un-paralleled worldwide support
Unique, innovative application development tools
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Microwave Heating and
Cooking Fundamentals
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5
Microwave Oven Background & Fundamentals
Waveguide
Stirrer
Magnetron
High Voltage
Transformer (Hidden)
Turntable
Stirrer, turntable used to “distribute”
energy
• System efficiency > 56%; degrades over
time
• Dielectric heating due to dipole rotation
− 2.4GHz typical (ISM)
− 915MHz also used
• Magnetron microwave energy source
− Self oscillating device
− Filament warm up time required
− Relatively broadband
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• Percy Spencer’s original patent:
2,495,429 filed Oct 8, 1945
• Raytheon 1161 Radarange first
marketed in 1954
• 1967 Amana introduced the
consumer microwave oven
Modernizing RF Power: Magnetron To Solid
State
Magnetron
RF Transistor
4,000 V supply voltage
28-50 V supply voltage
500 hours lifetime
Up to 20 years lifetime
Performance degrades over time
No performance degradation
On-off control:
High Resolution control:
Energy is ‘flooded’ to cavity
Phase, amplitude, frequency)
Energy can be directed
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Solid State Microwave Cooking: How Is It Different?
More Functionality & Performance
Solid State Source
Tube Source
Waveguide
Stirrer
Solid State
RF Power
Magnetron
• Direct energy to load
• Reflected energy received
• Absorbed energy analyzed
• Power & location adjusted
• Multiple sources
Turntable
• Selective heating
• Versatile: complex
combinations
• Improved consistency (quality)
• Long life
• Reduced time
• “Floods” and heats cavity
• Crude On/Off control
• Electro-mech BOM
• Degrades over time
More effective use of energy via closed
loop, controlled microwave power
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Power Control
•
100%
−
Power can be set to any level from
less than 1% to 100%
− Enables effective heating of low mass
objects
90%
80%
Delivered Power
Fine control at low levels
70%
60%
•
50%
Magnetron uses PWM with ~10
second minimum on time
40%
−
Magnetron filament requires initial
heat up time
− Best in Class magnetron can vary to
60% then goes to PWM
30%
20%
10%
•
0%
0%
50%
100%
Required Power
Magnetron
Solid State
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Precise cooking, warming,
defrosting, thawing through control
of power
Phase Control Location Optimization
Phase
Control
Antenna
Antenna
•
Detecting “load” location and
shifting phase in multi-feed system
−
•
Optimize energy to load location
Output is coherent, allowing phase
and amplitude control of multiple
sources
−
Enable selective combining of the
energy
•
Analogous to laser vs flood light
• Reduces random ‘hot spots’
−
Position
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Lab tests show as many as 5 hot spot
locations
Frequency Control – Managing IoT Interference
Conventional MWO Emission
Solid State MWO Emission
Vs. WiFi Router
MWO Signal
Power
SS MWO Signal
WiFi Signal
Frequency
Conventional microwave oven emission
covers virtually complete Wifi spectrum (all
channels simultaneously)
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Detection and frequency shifting enable
elimination of smart home device
interference
Electro-Mechanical Simplification
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Waveguide
Stirrer
Magnetron
Turntable
•
3”
•
3”
3 1/2”
Deep
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Reduced electro-mechanical
component BOM
−
Stirrer
−
Waveguide
−
Turntable
Reduced Weight
−
Magnetron ~1.6 lbs
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High voltage power supply
Enabling design flexibility
−
Antenna location flexibility
−
Flush mounted antenna
Solid State Cooking & Heating Advantages
Feature
Benefit
• Precise cooking/heating
• Highly efficient
• Higher quality nutrition
High Resolution Control
• Faster meal preparation
• Versatile food preparation
• Low noise
• IoT interference management
• Consistent heating parameters over lifetime
Durability
• Reduced maintenance
Reduced Size & Weight
• Form factor design flexibility
• Lower logistics costs
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New Product Announcements
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October New Product Announcements
• Designed for operation in harsh RF Heating
environments
 High temperature
 RF mismatch
 High physical vibration
• Rated for Continuous Wave (CW) operation
at high power and high frequencies
• Over-molded plastic packaging
 Superior thermal performance vs ceramic
packaging
 Supports modern manufacturing
techniques
• High gain enables use of small, low cost
drivers
• High efficiency reduces system cooling
requirements and reduces system cost, size
and complexity
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2.45 GHz
New Heating
Products
915 MHz
MHT1003N - 250 W Discrete
•
•
•
•
•
•
250 W CW @ 2.45 GHz
32 V operation
58% overall efficiency; 10pts better than
current generation
15 dB gain, <10 W drive for full power
SMT or through board mounting option
Superior Thermal performance
− Better
than ceramic package
− Enables higher safe power levels
•
RF Power Tool
EVB Available!
•
•
Optimized reference boards available
Samples now
Production 4Q 2014
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MHT1002N - 350 W Discrete
•
•
•
•
•
•
•
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350 W CW @ 915 MHz
50 V operation
20 dB Gain
Plastic Package
63% overall efficiency
Single ended or push-pull use
Internal matching
Production Now!
RF Power Discrete
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Innovative Tools
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What Challenges Do RF Power Application Developers
Face?
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•
Complex and Costly RF Component Evaluation
−
Requires numerous RF and test instruments
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Consumes large amounts of lab space
−
Typically costs in excess of $100,000
Complex Application Development and
Optimization
−
Conventional RF evaluation circuits provide only basic
RF circuitry, while real-world applications require
consideration of multiple interacting factors such as
temperature, voltage, power and frequency under
variable conditions
−
RF and test instruments from diverse manufacturers
require users to interface with and collect data from
many pieces of equipment individually
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RF Power Tool system
(Order Part# RFPOWERTOOL1000)
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Freescale RF Power Tool System
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Complete RF test bench
− RF Generator
− 4 Wattmeters/directional couplers
− 4 bias supplies
− Voltmeters
− Ammeters
− Thermometers
− RF Driver Amplifier
•
Seamless interface to Freescale RF
evaluation boards
•
Evaluate and develop your application
using Freescale RF power devices
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Set RF conditions and monitor performance
in real time
•
Use data logging to store and compare
results
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RF Power Tool
Smart Evaluation Board
LabView GUI
RF Power Tool System
RFPT-H2450-250
RFPOWERTOOL1000
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RF Power Tool Production GUI Preview
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What The RF Power Tool Replaces:
Use This…..
…..Instead Of This
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RF Power Tool Equipped Bench Setup
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Freescale RF Power Tool Customer Benefits
Enabling rapid and effective RF application development with Freescale
Customer Benefits
• Modular and portable
- High integration, small footprint and light weight enable portable use
• Quick setup
- Simple setup and ready to operate in minutes
•
Easy to use
- Intuitive graphical user interface
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Reduced application development time
- Single point of interface and entry for all key RF application variables
- Real-time monitoring and data logging
- Interface enables plugin to LabVIEW programming tools
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Economical
- Costs significantly less than a full RF bench
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Seamless interface to Freescale RF evaluation boards
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Available On Freescale Buy Direct!
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Creating an Ecosystem of RF Heating & Cooking Solutions
A range of solution options to fit the
individualized needs of RF Heating
customers
RF Components
Innovative Tools
Reference Solutions
PA + Phase Control
Antenna
Portfolio of High
Performance
Discretes and ICs
Smart RF Tools and
Evaluation Boards
Freescale Partners
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Antenna
Reference Designs
and Application
Circuits
RF Heating and Cooking Solutions From Freescale
•
Solid State RF Drivers
•
Solid State RF Power Stages: Discrete and Integrated Circuits
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Complete Line of Microcontrollers Supporting Microwave Ovens
•
Reference RF Circuits
•
Reference Microwave Oven Circuits
Discretes
Antenna
Design
Support
•
Antenna Design Support
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RF Power Application Development Tools
Reference
Designs
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RF
Heating
and
Cooking
Integrated
Circuits
Innovative
Tools
Visit Us On The Web!
www.freescale.com/RFHeating
www.freescale.com/RFPowertool
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Summary
Modernizing Microwave Ovens
Solid state RF power technology proving capable of delivering
differentiated performance
High Resolution Control
Enabling new functions and applications
Improved Size, Weight, and Mechanical Complexity
Opening the door for design freedom and durability
Freescale Leading The Evolution!
RF Power Tool system
RF Power Devices
RF ICs
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EVBs, Reference Designs,
Application Circuits
Learn More!
Tech Lab No. 15: Solid State Microwave Oven Demo
Tech Lab No. 16: See the RF Power Tool system in Action!
FTF Session: Modernize RF and Microwave Heating Applications
Time: 2:15 – 3:05PM @ Room 2
Visit Our Websites
www.freescale.com/RFheating
www.freescale.com/RFpowertool
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www.Freescale.com
© 2014 Freescale Semiconductor, Inc. | External Use