power psoc 101: intro to power converters. section 1: power converter overview course outline...
TRANSCRIPT
Power PSoC 101: Intro to Power Converters
Section 1: Power Converter Overview
Course Outline
Section 2: Power Converter Circuit Elements
Section 3: Operating Principle
Section 4: Converter Topologies
Section 5: Converter Transfer Functions
Section 6: Control Techniques
Course Objectives
At the end of this course, you should be able to:
Identify power converter variants and their constituents
Define the functional requirements for a power converter
Explain the principle of operation of power converters
List basic topologies and their transfer functions
Explain the concept of commonly used control techniques
1 Power Converter Overview
What is Power Converter?
A power converter is an electronic circuit that processes power in its available form and converts it to the required voltage/power levels that the devices specifically demand
Common Converter Characteristics
• Voltage regulation• Efficiency• Noise, Distortion, Power Factor• Communications interface• Size• Safety• Protection
Power Converter Circuit Elements
2 Power Converter Circuit Elements
Power Converter Components
Semiconductor Switch
• Unidirectional
• Bidirectional
Power Converter Components
Inductor
• Lossless reactive circuit element• Stores energy in its magnetic field• Instantaneous voltage proportional to rate of change of current
Power Converter Components
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s
Steady state average voltage across the inductor equals zero.
Power Converter Components
Capacitor
• Lossless reactive circuit element• Stores energy in its dielectric field• Instantaneous current proportional to rate of change of voltage
• Steady state average current through the capacitor equals zero.
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0)(1
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Operating Principle
3 Operating Principle
Operating Principle
DutyCycleD
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iono
4 Converter Topologies
Power Converter Topologies
Buck: Vo <= Vi
Boost: Vo >= Vi
Buck-boost: Vo <=> -Vi
•Converter Transfer Functions
5 Converter Transfer Functions
Vo = D.Vi
Steady State Transfer Function - Buck
Steady State Transfer Function - Boost
Vo = Vi/(1-D)
Vo = -D.Vi/(1-D)
Steady State Transfer Function – Buck-Boost
•Control Techniques
6 Control Techniques
Control Techniques – Voltage Mode
Control Techniques – Peak Current Mode
Course Summary
Overview to power converters and its common characteristics
basic circuit elements used in a power converter
operating principle of converters
3 basic topologies the buck, boost and buck-boost
state transfer functions for the basic converter types
Peak Current and voltage mode techniques
Next Steps
Supportwww.cypress.com/supportOnline SupportCYPros
Phone Hotline, (425) 787-4814
Technical Resources www.cypress.com/designresourcesTechnical Reference ManualDatasheets/Application Notes Reference Designs
• On-Demand Training
• Hands-On Workshops
• Webinars
• Learn More about PSoC hardware design tools and PSoC-based solutions at www.cypress.com/psoc
www.cypress.com/training
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