Post on 13-May-2020
A Smart Implementation of Switched-Tank Converter
Superior Efficiency HighestPower Density
Transformer-Less&
Off the Shelf Components
Robust Control Architecture
Superior Efficiency Results 2
98.6% Peak Efficiency (500W, 4:1 Architecture)
Resonant ZCS Behavior to Minimize Losses
Components Work at Low Temperature
Best Efficiency Performances
STC Reference Design Thermal BehaviorExperimental Results at 500W TDC Output Power
Highest Component Temperature: 57C
STC 500W Reference Design Board 4
200W/inch2 (500W, 4:1 Architecture)
Small Size Passive Components
Enables Usage of Very Low Z Profile Components
High Power Density
STC BOM Characteristics 5
Shorter Design to Prototype Time, Easy to Design,Easy to Implement, Multiple Source Components
Application Compactness, Lower Z Profile,Wider Form Factor Options, More Freedom for Performances Optimization/Customization
Reduced BOM, Competitive Solution Cost
Transformer-Less Architecture, Off the Shelf Components
STC Architecture Control 6
System Variables and Parameters Tightly Controlled by a SMED Core (State Machine Event Driven)
Key Controlled Parameters: Current Limit, Input Voltage Window, Conversion Ratio, PWM Smart Control, Soft Start, Temperature, Power up an Down Sequence
Robust, Validated Solution
Robust Control Architecture
STC Control Using SMED Digital Engine
• 6 programmable PWM Generators (SMED)• 4 Analog Comparators• ADCs (up to 8 channels)• Integrated Microcontroller• Embedded Memories• Clock management with Internal 96 MHz PLL• Basic Peripherals• Reset and supply management• I/O: Multifunction Bidirectional GPIO with Robust
Design and High Noise Immunity• Communication Interfaces• Operating temperature: -40 °C up to 105 °C.
State Machine Event Driven “SMED”