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”