J. Semicond. > 2008, Volume 29 > Issue 2 > 281-287

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A Piecewise Linear Slope Compensation Circuit for DC-DC Converters

Ye Qiang, Lai Xinquan, Li Yanming, Yuan Bing and Chen Fuji

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Abstract: To prevent sub-harmonic oscillation and improve the stability and load capacity of the system, a piecewise linear slope compensation circuit is designed.Compared with the traditional design, this circuit provides a compensation signal whose slope varies from different duty cycles at -40~85℃, and reduces the negative effect of slope compensation on the system’s load capacity and transient response.A current mode PWM Boost DC-DC converter employing this slope compensation circuit is implemented in a UMC 0.6μm-BCD process.The results indicate that the circuit works well and effectively, and the load capacity is increased by 20%.The chip area of the piecewise linear slope compensation circuit is 0.01mm2, which consumes only 8μA quiescent current, and the efficiency ranges up to 93%.

Key words: DC-DC converterslope compensationpiecewise linearduty cycle

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    Received: 18 August 2015 Revised: 25 September 2007 Online: Published: 01 February 2008

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      Ye Qiang, Lai Xinquan, Li Yanming, Yuan Bing, Chen Fuji. A Piecewise Linear Slope Compensation Circuit for DC-DC Converters[J]. Journal of Semiconductors, 2008, In Press. Ye Q, Lai X Q, Li Y M, Yuan B, Chen F J. A Piecewise Linear Slope Compensation Circuit for DC-DC Converters[J]. J. Semicond., 2008, 29(2): 281.Export: BibTex EndNote
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      Ye Qiang, Lai Xinquan, Li Yanming, Yuan Bing, Chen Fuji. A Piecewise Linear Slope Compensation Circuit for DC-DC Converters[J]. Journal of Semiconductors, 2008, In Press.

      Ye Q, Lai X Q, Li Y M, Yuan B, Chen F J. A Piecewise Linear Slope Compensation Circuit for DC-DC Converters[J]. J. Semicond., 2008, 29(2): 281.
      Export: BibTex EndNote

      A Piecewise Linear Slope Compensation Circuit for DC-DC Converters

      • Received Date: 2015-08-18
      • Accepted Date: 2007-08-06
      • Revised Date: 2007-09-25
      • Published Date: 2008-01-31

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