An area-efficient amplifier-less digitally-controlled li-ion battery charger in 0.35μm CMOS | IEEE Conference Publication | IEEE Xplore

An area-efficient amplifier-less digitally-controlled li-ion battery charger in 0.35μm CMOS


Abstract:

In this paper, an amplifier-less digitally-controlled lithium-ion (Li-Ion) battery charger is presented. Owing to the digitally-controlled technique, the proposed charger...Show More

Abstract:

In this paper, an amplifier-less digitally-controlled lithium-ion (Li-Ion) battery charger is presented. Owing to the digitally-controlled technique, the proposed charger eliminates all analog circuits and reduces the size of the power transistor. Hence, the proposed charger features a simple circuit structure and a small chip area. Additionally, this charger provides essential operations including constant-current (CC) and constant-voltage (CV) modes. The proposed charger is implemented in the TSMC 0.35-pm CMOS process with a 5-V power supply. The output voltage is 4.2 V, and the charging current in CC mode is 600 mA with an area of only 0.768 mm2.
Date of Conference: 06-08 November 2017
Date Added to IEEE Xplore: 28 December 2017
ISBN Information:
Conference Location: Seoul, Korea (South)

References

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