Mini Tutorials ISCAS 2019

Mini Tutorials ISCAS 2019

Power Management System for Advanced Mobile Display

  • Qadeer Ahmad Khan, Indian Institute of Technology Madras


Mobile display is one of the most important modules in a smartphone. Almost 50% of the total power in a mobile phone is consumed by display which makes its power management quite challenging. The number of power supplies and total power depends upon the type of display (LCD or OLED). This tutorial discusses power management modules required for different types of displays used in a mobile phone. System and circuit level power management techniques to implement state-of-the art features such logarithmic dimming, touch to wake-up and content adaptive brightness control (CABC) are also discussed


  • Qadeer Khan

    is an assistant professor in the Integrated Circuits and System group of the department of Electrical Engineering, Indian Institute of Technology Madras. He received the Bachelor's degree in electronics and communication engineering from Jamia Millia Islamia University, New Delhi, India, in 1999 and the Ph.D. degree in electrical and computer engineering from Oregon State University, USA in 2012. His Ph.D. work was focused on developing novel control techniques for high performance switching dc-dc converters.

    From 2012 to 2015, he worked as a Staff Engineer, Power Management Systems with Qualcomm, San Diego and from 2015 to 2016 with Qualcomm, Bangalore where he was involved in defining system and architecture of various power management modules for snapdragon chipsets catering to different smartphone markets. From 1999 to 2005, he worked with Motorola and Freescale Semiconductor, India, where his main responsibilities were designing mixed-signal circuits for baseband and network processors and full-chip integrated solutions for high-voltage motor drives.

    Dr. Qadeer Khan holds 18 U.S. patents and authored/co-authored over 20 IEEE publications in the area of analog, mixed-signal and power management ICs. He serves as reviewer of the IEEE Journal of Solid-State Circuits, IEEE Transactions on Very Large Scale Integration Systems, IEEE Transaction on Power Electronics and IEEE Power Electronics Letters. His research interests involve high-performance linear regulators, LDOs, switching dc-dc converters and power management ICs for portable electronics and energy harvesting.