Design of a sensorless commutation IC for BLDC motors

Kuang Y. Cheng*, Ying Tsan Lin, Chung Hsien Tso, Ying-Yu Tzou

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


This paper presents the design methodology to implement a sensorless commutation IC for brushless dc (BLDC) motors by using mixed-mode IC design technology. The developed IC can generate optimal commutation signals for BLDC motors without Hall-effect sensors and can be easily interfaced with a microcontroller or a digital signal processor (DSP) to complete the closed-loop control system. Furthermore, this IC solution requires less analog compensation circuits than other commercial motor control ICs, therefore, high maintainability and accurate control can be achieved. The proposed sensorless commutation IC is integrated in a standard digital single-poly, and four metal 0.35-μm CMOS process.

Original languageEnglish
Article number1023885
Pages (from-to)295-300
Number of pages6
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
StatePublished - 23 Jun 2002
Event2002 IEEE 33rd Annual Power Electronics Specialists Conference (PESC) - Cairns, Australia
Duration: 23 Jun 200227 Jun 2002


  • Brushless dc motors
  • Mixed-mode IC design
  • Sensorless commutation IC

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