基于TI TPS6206x 的3MHz 高效2A DC電源轉
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The TPS6206x is a family of highly efficient synchronous step down DC-DC converters. They provide up to 2.0A output current.
With an input voltage range of 3.0V to 6V the device is a perfect fit for power conversion from a 5V or 3.3V system supply rail. The TPS6206x operates at 3MHz fixed frequency and enters Power Save Mode operation at light load currents to maintain high efficiency over the entire load current range. The Power Save Mode is optimized for low output voltage ripple. For low noise applications, TPS62065 can be forced into fixed frequency PWM mode by pulling the MODE pin high. TPS62067 provides an open drain power good output.
In the shutdown mode, the current consumption is reduced to less than 1μA and an internal circuit discharges the output capacitor.
TPS6206x 主要特性：
3 MHz Switching Frequency
VINRange from 3.0V to 6V
Up to 97% Efficiency
Power Save Mode/3MHz Fixed PWM Mode
Power Good Output
Output Voltage Accuracy in PWM Mode ±1.5%
Output Capacitor Discharge Function
Typical 18 μA Quiescent Current
100% Duty Cycle for Lowest Dropout
Voltage Positioning
Clock Dithering
Supports Maximum 1mm Height Solutions
Available in a 2x2x0.75mm SON
TPS6206x 應用：
POL
Notebooks, Pocket PCs
Portable Media Players
DSP Supply
圖1。TPS6206x方框圖
TPS6206x 典型應用電路
圖2。TPS62065 1.8V 可調輸出電壓電路圖
圖3。TPS62067 1.8V 可調輸出電壓電路圖
評估板TPS62065-67EVM-347
The TPS62065-67EVM-347 is a fully assembled and tested pair of PCBs for evaluating the TPS62065 and TPS62067 2-A step-down converters. The EVM comes configured with both a TPS62065 IC and a TPS62067 IC; there are two PCBs, one for each respective step-down converter IC.
評估板TPS62065-67EVM-347主要特性：
? Input voltage range: 3.0 V to 6.0 V
? Adjustable output voltage: 0.8 V to VIN
? Up to 2.0-A output current
? 3-MHz switching frequency
? Power Good output (TPS62067EVM only)
? Clock dithering
圖4。TPS62065EVM電路圖
圖5。TPS62067EVM電路圖
TPS62065/67EVM材料清單（BOM）：
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