Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

Off-Line, High Brightness, 1.4A LED Driver Demo Board

Part Number: HV9910BDB1

Summary:

The HV9910BDB1 demoboard is an offline, high current LED driver designed to drive a 40V LED string at 1.4A from a 110V input. The demoboard uses HV9910B LED driver IC to drive a buck converter.  The HV9910BDB1 has a typical full load efficiency of 88%, with the buck converter efficiency (excluding the diode bridge rectifier and EMI filter) at 93%. The demoboard also meets CISPR-15 conducted View More

Thank you for your request. We will reply back with quotation as soon as possible! If you have any questions in the meantime, feel free to contact us here .

Documents and Software
Overview
Features
Additional Resources
Related Tools

Additional resources data currently not available.

Documents and Software

Documents

6/25/2014
657KB

Product Features

    Please download the user guide for more information

Summary

The HV9910BDB1 demoboard is an offline, high current LED driver designed to drive a 40V LED string at 1.4A from a 110V input. The demoboard uses HV9910B LED driver IC to drive a buck converter.  The HV9910BDB1 has a typical full load efficiency of 88%, with the buck converter efficiency (excluding the diode bridge rectifier and EMI filter) at 93%. The demoboard also meets CISPR-15 conducted EMI standards.  The output current can be adjusted in two ways - either with linear dimming using the onboard potentiometer or with PWM dimming by applying a TTL-compatible square wave signal at the PWMD terminal. Using linear dimming, the output current of the HV9910DB1 can be lowered to about 0.1A (note: zero output current can be obtained only by PWM dimming).