Chin. J. Semicond. > 2007, Volume 28 > Issue 7 > 1030-1035

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Chip Design of Li-Ion Battery Charger Operating in Constant-Current/Constant-Voltage Modes

Chen Chen and He Lenian

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Abstract: A design for a Li-ion battery charger IC that can operate in a constant current-constant voltage (CC-CV) charge mode is proposed.In the CC-CV charge mode,the charger IC provides a constant charging current at the beginning,and then the charging current begins to decrease before the battery voltage reaches its final value.After the battery voltage reaches its final value and remains constant,the charging current is further reduced.This approach prevents charging the battery with full current near its saturated voltage,which can cause heating.The novel design of the core of the charger IC realizes the proposed CC-CV charge mode.The chip was implemented in a CSMC 0.6μm CMOS mixed signal process.The experimental results verify the realization of the proposed CC-CV charge mode.The voltage of the battery after charging is 4.1833V.

Key words: Li-ion battery chargerconstant current-constant voltage charge modesCMOS analog circuit

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    Received: 18 August 2015 Revised: 05 March 2007 Online: Published: 01 July 2007

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      Chen Chen, He Lenian. Chip Design of Li-Ion Battery Charger Operating in Constant-Current/Constant-Voltage Modes[J]. Journal of Semiconductors, 2007, 28(7): 1030-1035. ****Chen C, He L N. Chip Design of Li-Ion Battery Charger Operating in Constant-Current/Constant-Voltage Modes[J]. Chin. J. Semicond., 2007, 28(7): 1030.
      Citation:
      Chen Chen, He Lenian. Chip Design of Li-Ion Battery Charger Operating in Constant-Current/Constant-Voltage Modes[J]. Journal of Semiconductors, 2007, 28(7): 1030-1035. ****
      Chen C, He L N. Chip Design of Li-Ion Battery Charger Operating in Constant-Current/Constant-Voltage Modes[J]. Chin. J. Semicond., 2007, 28(7): 1030.

      Chip Design of Li-Ion Battery Charger Operating in Constant-Current/Constant-Voltage Modes

      • Received Date: 2015-08-18
      • Accepted Date: 2007-01-22
      • Revised Date: 2007-03-05
      • Published Date: 2007-07-05

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