Turn on the power with LLC controller

The latest report from the World Bank shows that per capita energy consumption has increased exponentially, from 1200KWh to 3200KWh. While there are many driving factors behind the rise in energy consumption, one of the main factors is the increase in the number of electronic devices per household.

Global power consumption has increased the need to produce more energy. But the question is how to meet this demand for more energy, and the answer lies in a very simple law of economics - supply and demand.

There are two options:

• Increasing supply: Electricity manufacturers continue to produce more energy.

• Reduced demand: Reduce the overall power consumption of the home, which means that each power electronic device in the home should consume less electricity.

Figure 1: Supply and Demand Curves

While increasing supply seems to be a simple and easy solution, most countries prefer the second option: reducing demand, which in turn can protect our natural resources and make the planet greener. Several countries and US states are introducing energy standards such as Code of Conduct (CoC) Tier 2, US Department of Energy (DoE) Level 6, and California Title 22.

However, this leads to another problem: how to control demand while the number of consumers increases? The solution to this problem is to design more efficient power supplies that can provide more energy while wasting less. Of course, power supply designers are not at a loss, and they are looking for a "magic" element that can help improve power supply performance.

TI's latest inductor-inductor-capacitor (LLC) controller UCC256301 introduces a new patented control algorithm, hybrid hysteresis control , which allows your device to run faster and achieve the industry's lowest 40mW no-load standby power consumption. The controller's ultra-fast transient response allows the buck capacitor on the power supply to be reduced by nearly 20%. You can minimize power losses by suppressing most of the AC ripple, thereby increasing the light-load efficiency of the power supply to more than 90% at 10% load.

The LLC controller is introduced with a comprehensive toolkit that makes the design experience extremely simple and provides reference designs with several specifications:

• 24V, 480W (nominal), 720W (peak), >93.5% efficient, reliable AC/DC industrial power supply reference design

• Ultra-transient, 450W AC/DC reference design with 80+ Platinum certification and 93% efficiency using single-layer PCB