Self-Balanced Charge Pump with Fast Lock Circuit

Xiang Jiang, Xuecheng Zou, Dingzhong Xiao, Sanqing Liu

Research output: Contribution to journalArticlepeer-review


A self-balanced charge pump (CP) with fast lock circuit to achieve nearly zero phase error is proposed and analyzed. The proposed CP is designed based on the SMIC 0.25 μm 1P5M complementary metal-oxide semiconductor (CMOS) process with a 2.5 V supply voltage. HSPICE simulation shows that even if the mismatch of phase/frequency detector (PFD) was beyond 10%, the charge pump could still keep nearly zero phase error. Incorporated fast lock circuit can shorten start-up time to below 300 ns.

Original languageEnglish
Pages (from-to)621-624
Number of pages4
JournalWuhan University Journal of Natural Sciences
Issue number3
Publication statusPublished - 1 May 2006
Externally publishedYes


Dive into the research topics of 'Self-Balanced Charge Pump with Fast Lock Circuit'. Together they form a unique fingerprint.

Cite this