Efficiency, a more and more important word in the present, almost used everywhere in life.You may ask “What does efficiency have to do with the power adapter?”So in this blog I’ll show you efficiency means what to power adapters.
What Efficiency Really Means in Power Adapters
There is always a misunderstanding to efficiency, that “efficiency” equals energy saving. In fact, it also means less energy is converted into heat.
Low efficiency means that more of the input power is converted into heat rather than output to the device than high efficiency. This increased heat not only wastes electricity but may also affect the lifespan and safety of the adapter and home healthcare devices.
Let’s take the 24w medical power adapter as an example,the efficiency of model A is 90% and model B is 85%.it seems that the gap of 5% is not very much,but when we list the formula,you will see the difference.
90% efficiency: Power consumption: 24 ÷ 0.9 ≈ 26.7W, total loss: approximately 2.7W
85% efficiency: Power consumption: 24 ÷ 0.85 ≈ 28.2W, total loss: approximately 4.2W
Compare the loss and you will find out,the loss was added 1.5W,and that’s only 5% ‘s efficiency gap of nearly 55% of heat.With the time goes by, 85% efficiency power adapter will produce far more heat than the 90% one,which is fatal to medical power supply and medical/healthcare devices.
In short,for medical power supply and healthcare devices,low efficiency = high heat = high risk.
High efficiency and low temperature rise: making medical equipment more reliable and safer
Efficiency is almost the most important factor among all the specifications of a power adapter.Because high efficiency means less energy loss and less temperature rise, which results in slower insulation aging, smaller leakage current and longer service life.
Heat affects more than just lifespan; it also impacts insulation performance, leakage current, and overall stability. Especially in medical equipment, temperature rise is almost a mirror image of reliability: for every 10°C increase, the lifespan of an electrolytic capacitor can be halved. This is why fanless devices (such as pulse oximeters,pumps and monitors) rely heavily on internal thermal management systems.
Products that comply with international safety standards such as IEC 60601-1 and 2×MOPP often strike the optimal balance between energy efficiency and safety.
Quankang’s medical-grade adapters are designed with this in mind—using high-efficiency circuitry and sophisticated thermal control layout to ensure lower heat generation, more stable insulation, and higher reliability.Some models in Quankang have reached 95% efficiency and have received high praise from customers.
The Role of Advanced Topology
In medical power supplies,high efficiency is not edited by software but is improved step by step with hardware,with advanced topology and components.
Topology determines how electrical energy flows in an AC power adapter system and how it is converted into a stable DC output.
The LLC topology, for instance, uses resonant circuits to minimize switching losses, enabling soft-switching. This results in lower heat generation and improves the overall efficiency of the power supply.By using this topology, medical adapters achieve high efficiency without sacrificing performance or safety.
Quankang offers customized solutions balancing high efficiency and safety.We can customize the most suitable topology architecture based on the power consumption, heat dissipation, and safety requirements of different medical devices, achieving a balance between efficiency, safety, and structural size. For example:
Choosing high-frequency LLC + synchronous rectification for low-noise home devices;
Using SiC devices to improve voltage withstand and thermal stability for high-reliability scenarios;
Maintaining medical-grade leakage current requirements under extreme power density designs.
If you have unique thoughts,just come and try our customization,and you will get a wonderful and perfectly suitable medical-grade power adapter.
Summary: Cool Power Is Safe Power
We have to say that efficiency is the core of a power adapter, so don’t just think about power and price,consider the efficiency before purchasing.
Contact us to get a perfectly suitable power supply solution.
