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SMART Power Supply

Is SMART™ power supplies the next big thing?

Call for more information.

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Kickstarter Project

Check out our KickStarter Project:

Let me know if you have any questions.

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December Discount

For the entire month of December 2016, receive a 30% discount on point of load eval boards.  Call for details.DC-DC Converter

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Design Criteria, Inc

Happier clients mean more contracts, faster growth and greater profits for your company With Design Criteria Components you can have all three… If you want to reduce design and manufacturing costs, improve your processes and products at the same time, you definitely want to get to know Design Criteria, Inc. (DCI) Design Criteria, is an innovation company, with a broad range of experience designing and manufacturing exclusive power electronics (i.e. power supplies, transformers and LED drivers). We are the ONLY Company to incorporate revolutionary SMART™ Technology into our power supplies; technology which includes exclusive, Remote Health Monitoring.

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Long Range Wireless Power for Creat the Future

Vote for wireless power in the “Create the Future” contest sponsored by Tech Briefs.


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Long Range Wireless Power Transmission

Design Criteria, Inc. (DCI) is developing innovative technology that will significantly improve the range of wireless power transmission (WPT) to provide more dependable operation and charging for mobile devices.  This technology will reduce the number of adapters, radically changing the way people live their lives, and afford a higher level of mobility and greater convenience.  Greater value will be added to mobile devices, personal electronics and other portable electronic equipment.  The proposed technology which already has a considerable amount of interest from various customers will have a direct impact on virtually all aspects of life. 

A designer and manufacturer of AC/DC and DC/DC power supplies and battery chargers is anxiously waiting for and seriously interested in DCI’s long range wireless power transmission concept to improve the quality and mobility of portable communication devices for medical personnel.  In the smartphone market, a customer desires to implement this novel WPT technology into their family of smartphones. 

A survey conducted by DCI indicated that more than 88% of the respondents want wireless power for mobile devices.  More than 60% of those surveyed would like wireless power to reach up to 26 feet.  Wireless power transmission systems on the market today require that a portable device be placed on a charging mat to receive energy to charge the battery.  DCI’s proposed game changing technology which is markedly different from the competition will transmit wireless power to several feet.  This technology will remove the need for a charging mat. 

Other benefits to long range wireless power transmission are that additional consumer electronics such as laptops, televisions, and audio equipment can be charged or receive direct power wirelessly allowing the consumer to place electronic equipment in most any location or direction and thereby reducing copper wiring as well as allowing greater flexibility.  Airports and public venues will be able to provide wireless power and reduce copper wiring.  Medical devices such as patient monitors and implantable devices using our proposed research technology will advance patient monitoring, telehealth monitoring and improve patient quality of life.

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Microcontrollers for Power Supplies

The typical microcontroller used for a digital controlled power supply will have a good deal of extra computation time between running the control loops for a power supply.  Some microcontrollers actually come with computational acceleration hardware to speed up the power supply computation process.  While this could mean that a little slower speed, smaller, less functionality microprocessors can be used to manage and control only the power supply.  It also means that more of the system processes can be managed and controlled by the microprocessor with the same central processing unit and overall configuration with extra modules, memory, and functionality. 

Microcontroller families generally are the same base model chip with more or less bonuses to best fit the customers cost vs. functionality needs.  Microcontrollers can come with different amounts RAM, EEPROM, and Flash memory and different numbers of pulse width modulators and modules, analog-to-digital converter (ADC) channels and converter cores, digital input/output (IO) pins, and communication ports and other components.  Many times a pin is connected to one or more of the functional blocks (PWM, ADC, etc.) and can be configured to take advantage of one of these connections.

Depending on the size and needs of a system, a microprocessor can be chosen that will run the entire system as well as the power supply or only the power supply.  Controlling the power supply, switching loads on and off, acting as a motor controller, communicating with personal computers and other devices, and monitoring voltages, currents, temperature, etc. can all be done with a single microcontroller. 

Systems that require many different voltages or multiple power supplies can have a single microcontroller chosen to control and manage all the supplies together as its own subsystem.  In addition to reducing size and cost, a microcontroller can allow the power supply subsystem to communicate and work easily with the rest of the system.  This would allow a designer to run the system and interact with the power supply subsystem without worrying about the control and management of the power supplies at the same time.  Even using individual microcontrollers to control each power supply in the system would allow for a level of communication that would be very hard to achieve otherwise.

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The Growing Need in Power Electronics

Digital Controlled Power Supply

Much time, effort and funds have been devoted to the development digital controllers for switch mode power supplies (SMPS) because of the several key advantages that microcontrollers offer.  Traditionally, power supply technology has resided in the analog domain.  Digital controllers have opened a completely new dimension and world for SMPS.   In fact, this digital revolution for power supplies has grown considerably in recent years and allows power supplies to reach new levels. 

Using a digital signal controller (DSC) offers several advantages to a power supply.  DSC reduces part count thus providing a cost savings over a comparable analog approach.  This reduction in part count also reduces board real estate.  

The microcontroller allows a power supply designer to quickly redesign with few, if any, component changes or board revisions.  Additionally, advanced power supply circuits, topologies and features can be easily implemented using DSC.  The switching frequency can be adjusted for the SMPS to operate at the most efficient level which can be a function of the load or other parameters.  Lower or smaller loads generally lead to less efficiency.  The digital controller provides many options to optimize the efficiency of SMPS over the entire operating range or wider ranges.

During little to no load conditions the switching power supply can be programmed to low power modes by stopping the switching action, pulse skipping, shutting down a pulse width modulator (PWM) module, or even causing the microcontroller to go into a low current sleep mode until the supply is needed again.

Using a microcontroller to provide error amplification and compensation allows designers to quickly adjust the compensation and observe the results without changing component values or configurations.  Different compensation arrangements can also be provided for different situations during power supply operation.  Inductor current limits, output voltage, and even operating frequency can be adjusted automatically while the power supply is running in the system if desired.

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Integrated DC-DC Converter

Design Criteria's Pi2 converter can be intergrated or embeded into a customer's printed circuit boards (PCBs).  This provides a high eficient, regulated power source for point of load applications.  Embeded converters can also have high voltage isolation.  We design and manufacture for exteme solutions such as military and medical applications.  Let's discuss this option.

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High Efficient Power Supply for UAV Applications

Design Criteria has innovative power supply and dc-dc converter designs for high efficient, compact requirements such as autonomous, unmanned aerial vehicles (UAV) and robotics.  Our designs are solid, rugged and reliable for high altitude and harsh environments.

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