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Microchip Releases New Intelligent Constant Current Controller for LED Lighting


The MCP19116 and MCP19117 Allow More Accurate Control of LED Light Levels and Light Quality


Microchip have announced two new digitally enhanced power analog controllers designed for LED lighting applications. The MCP19116 and MCP19117 increase accuracy for LED lighting and allow users to carefully control LED light output levels without sacrificing color or light quality for reliable long-life applications.

Click for Larger Image - Microchip Releases New Intelligent Constant Current Controller for LED Lighting Efficiency and longevity have consistently been drivers in LED adoption. However, light quality remains one of the most important system considerations. Color, brightness, and controllability are the key to a successful lighting product. By combining the power and performance of an analog-based controller with the flexibility of a digital interface, the MCP19116/7 is an intelligent pulse width modulation (PWM) controller with a fully integrated PIC® MCU core that can deliver cost savings while still providing the highest standards in reliability, efficiency, and light quality. The digital interface also allows for communication and configuration, allowing a subsystem to report status or be remotely controlled. This functionality is necessary for adding lighting to many applications, especially high-reliability automotive and remotely accessible internet of things (IoT) devices.

“The MCP19116/7 is designed to create excellent LED lighting applications, and can do so better than any other LED drive IC on the market,” said Keith Pazul, senior manager of Microchip's Analog Power and Interface Division. “Many companies claim they have tight current regulation accuracy in their controllers, when in reality they ignore various sources of error from other components in the system. These devices are highly accurate across all operating conditions and adjustable on the fly using the integrated PIC MCU core. This is truly a best-in-class solution.”

Click for Larger Image - Microchip MCP19116 and MCP19117 Block Diagram The LED lighting industry continues to grow in market share and reach. A report from Big Market Research from 2015 indicated strong market growth for LED lighting, anticipating the industry to grow 45 percent per year through 2020. The market is also expected to reach over $63 billion in 2020. These predictions are consistent throughout industry analysts.

“LED is here to stay,” echoed Pazul. “Microchip has made a diverse investment in technologies to control and drive future generations of LED lighting products. We are proud to be a premier supplier of lighting solutions to a wide variety of applications and end markets.”

Click for Larger Image - Microchip MCP19117 Flyback Evaluation Board

Features of the MCP19116 Constant Current LED Controller

  • Current regulation accuracy with less than 5% variation across temperature, including all line, load, and system variations
  • Dynamically adjustable output current over a wide operating range
  • Wide operating voltage range: 4.5-42V
  • Analog peak-current mode Pulse-Width Modulation (PWM) control
  • Integrated 8-Bit PIC® Microcontroller
  • Significant configurability: adjustable output voltage, output current, MOSFET deadtime, leading edge blanking time, thermal responses, slope compensation, over-current protection, over and under voltage lockout levels
  • Available fixed frequency or quasi-resonant mode operation, adjustable 31 kHz to 2 MHz
  • I²C communication interface
  • 8 GPIO
  • Integrated synchronous low-side MOSFET drivers
  • Integrated high voltage linear regulator, with external output
  • Integrated temperatures sense diode
  • Integrated 10 bit A/D converter
  • Minimal external components needed
  • Custom algorithm support
  • Topologies supported: Boost, SEPIC, Flyback, and Cuk

More information on the MCP19116 Constant Current LED Controller can be found on the Microchip Web site at Microchip MCP19116 product page

For the MCP19117, more information can be found at Microchip MCP19117 product page

Note: The Microchip name and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A and other countries. All other trademarks mentioned herein are the property of their respective companies.


The company's Web site address is www.microchip.com
[Reprinted with kind permission from Microchip Corporation - Release Date, 22nd March, 2016]