High Temperature Voltage Power Supplies

Industrial sectors can present varied and challenging environmental conditions and extreme temperature shift. To address the specific needs of industrial control, automation, assembly and test equipment. Is the fan spinning at the right speed? Are the critical components running at an acceptable temperature? Many applications need electronics that operate outside the typical industrial operating temperature range and even beyond the standard military temperature range of -55   ̊C to +125  ̊C.

Electronic components used in power supplies and other devices can be exposed to temperature extremes that can damage them or shorten their life or MTBF (mean time between failure). It is very important to avoid such potentially dangerous thermal conditions before they can damage the component. By measuring the base temperature, such ambient or case temperature, the component temperature can be modeled, and this can then be used to avoid harmful thermal conditions.

IDENTIFY IF YOUR POWER SUPPLY NEEDS A COOLING SYSTEM

The aim is to set an operating boundary that will ensure the part will be used in the safe thermal environment. In particular, it ensures that the components on the power supply will not exceed thermal ratings that would either reduce their reliability or worse cause a breakdown of those components. The designer determine this boundary as they go through the design, evaluation process and incorporate additional thermal heat dissipation, in order to meet these requirements.

Extreme Temperature Range

The power rating of conventional converters goes down dramatically at a certain point as temperature raises this phenomenon is called derating. The derating point usually starts between 40  ̊ Celsius and 70  ̊ Celsius. Beyond the derating point a, conventional converter gets stressed and starts losing power gradually.

Size

Another issue caused by the derating effect is an increase in the package size. Engineers need to over-spec their converters to compensate the loss in power at high temperatures , which mean they need to select a bigger size package. A conventional converter that delivers 20W at 85  ̊has a package size of 2 inches.

Derating

As power supply reduces in size, it is imperative to either reduce losses or implement techniques to deal with the heat transfer effectively. If not then you may face two choices, either reduce reliability or derate. You do this by limiting the power dissipation of the components of the device itself.

High Voltage Power Supply - AHV

AHV is the premier manufacturer of high voltage power supply, providing high temperature DC converters and custom power supplies for many marketplaces.

http://www.ahv.com/

American High Voltage Power Supply - AHV.com

Energy Saving

Today all engineers are driven to build products that save energy. One very important feature to take into account when designing a power supply is the consumption under no load conditions. When the converter is on it is constantly drawing current from the main source even though there is no load. If this consumption is too high engineers, often build additional circuits to turn on and off their power converter depending on the load. These external circuits can be difficult to implement and increase the overall cost of the product.

It is however summarized that engineers are forced to reduce costs and still provide high-quality products. The revolutionary technology offers a solution for engineers struggling with oversized converters derated to cope with high temperatures, so products are designed for extreme temperature conditions. The efficiency is exceptionally high and remains consistent over variable loads and input voltages.

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