![]() How does GaN-on-SiC improve power density? In addition, high-power-density component embedding and 3D packaging of power semiconductors must overcome a “thermal barrier.” That’s because it’s more challenging to remove heat generated within the body of a 3D integrated system than from a planar surface. This, along with 3D packaging technology, will lead to a significant performance and size reduction in a power supply. The PSMA is involved in PCB embedding technologies in high-volume production. This group also helps to develop designs to increase current density and power density in electric motors with improved thermal management. The Power Supply Manufacturers Association (PSMA) is doing important work on power density via the development of 3D packaging at the printed-circuit-board (PCB) scale. What kind of research is being done to optimize power density?Įssentially, reducing the size of a power supply will lead to better power density (see figure). One of the most important areas where power density is vital to humans on Planet Earth is the amount of energy we can extract from renewable sources per section of land-that is, power density in W/m 2. This means higher-power-density supplies become ever-more critical. Processing-power speed continues to accelerate by leaps and bounds and power-hungry processors require great amounts of power. A good example here are data centers-designers need to efficiently fill the spaces with as much processing power as possible. Power density is important in a power supply, especially in a space-restricted area. Capacitors are good for short bursts of very high current and batteries excel at providing lower currents for extended periods of time. Regarding batteries: Energy density relates to the amount of energy that can be stored per battery unit, whereas power density relates to the maximum amount of energy that can be discharged or delivered per battery unit.īy comparison, capacitors offer very high power density but low energy density. A system is said to have a high energy density when it’s able to store a large quantity of energy in a small amount of mass. Power density (W/kg) is the amount of energy flow per unit (mass, area, volume) per unit time (s). Power density and energy density are quite different.Įnergy density (W/kg) can be described as the amount of energy stored per unit with mass (kg), area (cm 2), or volume (L). Is power density the same as energy density? To design robust power supplies, designers need to understand some basics and pitfalls. Applications seeking greater power density in their designs.The key role of GaN-on-SiC in achieving power-density goals.Differentiation between power and energy density.This article is part of the Power Management Series: Delving Into Power Density ![]()
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