High Efficiency & Low EMI Switched Mode Power Supply design, introducing New Technologies
Low power designs most times have tight space constraints. This also implies that there is not much space available for extensive cooling mechanisms like fans or heatsinks. The designs are often battery powered, so operating at high efficiency to get maximum operating time at one battery charge is also important. This usually can be acheived by powering the circuits using switchmode power supplies.
The switching operation of the switchmode power supplies typically generates noise. Because of this noise it can become a challenging to design a reliable power supply circuit especially if a high sensitve sensor or any kind of radio is part of the design. Limited space usually does not allow using large components for filtering and protection.
This presentation shows different approaches for minimizing noise and improving robustness in a low power design when using switchmode power supplies in practical application examples.