save energy in your system with r3 d1
DESCRIPTION
Energy conservation is becoming increasingly critical as well as the ability to meet new energy efficiency standards; therefore, decreasing the standby power consumption of electronic devices is becoming more and more important. Being the “heart” of the electronic system, power supplies need to be more efficient, This is what the Mornsun R3 wide-input DC/DC converter are made forTRANSCRIPT
Save Energy in Your System with R3 DC/DC Converter(二)
【 Question 2: How much does derating affect the temperature rise of converter
enclosure?】
In most cases, the customers tend to use the dc/dc converters with 10%~30% loads. It is
considered that derating can improve product’s long-term reliability. However, in practical
application, the low efficiency in long light-load operation causes serious self-heating,
temperature rise of the enclosure, and ultimately results in failures in multiple converter
applications or in closed environments.
There is a case of a customer in the military industry. The load power of the application is
1W, and the engineers think that derating can improve product’s long-term reliability, thus
they selected a 6W converter of another company. Tested in the nominal voltage input,
the output load power is 1W; while tested at 25℃, the shell temperature reached 44℃;
tested in 85℃, it reached 103℃. Thus the reliability of the power converter will be reduced
in continuous high temperature operation.
The efficiency is only about 40% in 1W load. We can see from the formula, the power
consumption of the module itself is higher than the load power, which causes the
temperature rise of the enclosure and reduces the product’s reliability. In contrast, the
efficiency of Mornsun R3 6W converter is up to 75% in light load, which is 35% higher than
the common standard in the industry. From the formula, we know that the consumption is
only 0.3W, and the enclosure temperature of R3 DC/DC converter is 10℃ lower than
common converters’, which lowers the self-heating of the converter and improves the
reliability.
Meanwhile, as the no-load consumption has been reduced, the consumption of all load
points is also reduced, which significantly improves the product efficiency in all range of
load.
Mornsun R3 wide-input DC/DC converter adopts patented design, solves the problems
of low efficiency in light-load operation, high temperature raise, etc., and achieves
energy saving of the application.