SLUAA12 March   2020 TPS53681

 

  1.   Selection Considerations for Output Capacitors of Multiphase Voltage Regulators Part 1
    1.     Trademarks
    2. 1 Introduction
    3. 2 Current Transfer Function Gii_CL(s) of Load Current to Inductor Current
    4. 3 Output Capacitance Calculation Based on Load Transient
      1. 3.1 Steady-state Output Ripple
      2. 3.2 Load Step Transient Response
        1. 3.2.1 Case 1: Small-signal Transient with Unsaturated Loop
        2. 3.2.2 Case 2: Large-signal Transient with Saturated Loop
        3. 3.2.3 Criteria for Loop Saturation
    5. 4 Analytical Calculations and Experimental Verification
    6. 5 Conclusions
    7. 6 References

6 References

  • Texas Instruments, Multiphase Buck Design from Start to Finish, Part 1 (Rev. A) Application Report
  • Texas Instruments, D-CAP+ Control for Multiphase Step-Down Voltage Regulators for Powering Microprocessors Application Report
  • K. Cheng and Y. Su, Adaptive voltage positioning (AVP) design of multi-phase constant on-time I2 control for voltage regulators with ramp compensations, 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, 2016, pp. 118-124.
  • Kaiwei Yao, Yuancheng Ren and F. C. Lee, Critical bandwidth for the load transient response of voltage regulator modules, in IEEE Transactions on Power Electronics, vol. 19, no. 6, pp. 1454-1461, Nov. 2004.
  • Yang Qiu, Kaiwei Yao, Yu Meng, Ming Xu, F. C. Lee and Mao Ye, Control-loop bandwidth limitations for multiphase interleaving buck converters, Nineteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2004. APEC '04., Anaheim, CA, USA, 2004, pp. 1322-1328 vol.2.