Outdoor power supply has large power loss

What if all linear power supplies were improved?

• What if all linear power supplies were improved from about 30% efficiency to 80%? • What if all switching power supplies were improved from about 70% efficiency to 80%? • Annual savings would be more than 1% of total U.S. electricity use: about 32 billion kwh and more than $2.5 billion in lower energy bills.

What are the advantages of highly efficient power supplies?

Key Market Advantages for Highly Efficient Power Supplies • Reduce travel weight & size • Free up outlets / increase convenience • More units per shipping container & more room for merchandise in store • Already meets existing standby and pending active mode efficiency specs – future-proof!

How much money can a power supply save a year?

• Annual savings would be more than 1% of total U.S. electricity use: about 32 billion kwh and more than $2.5 billion in lower energy bills. • Very cost effective – incremental costs often less than $1 (in some cases pennies) per power supply.

How much electricity is flowing through power supplies?

Total U.S. Electricity Flowing Through Power Supplies: 207 billion kwh/year, worth about $17 billion/year At least 6% of U.S. electricity use! Savings Potential is Huge • What if all linear power supplies were improved from about 30% efficiency to 80%? • What if all switching power supplies were improved from about 70% efficiency to 80%?

What is a switch mode power supply eficiency?

Figure 1. Simplified switch mode power supply switching circuit. A typical switch-mode power supply might have an eficiency of about 87%, meaning that 13% of the input power is dissipated within the power supply, mostly as waste heat. Of this loss, a significant portion is dissipated in the switching devices, usually MOSFETs or IGBTs.

How can power analysis software improve dpopwr switching loss measurement?

Automating the measurement through power analysis software removes many of the sources of variation. Figure 5. DPOPWR automated switching loss measurement. To consistently optimize the setup and improve measurement repeatability, a power measurement application can be useful.