NTU PELAB

Step down dc-dc converter survey & benchmark:

 

 

 

 

 

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Iq versus load dynamic range:

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Load tran Fom Versus Load Dynamic Range:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Benchmark Papers:

1. T. -C. Huang et al., “A Battery-Free 217 nW Static Control Power Buck Converter for Wireless RF Energy Harvesting with α-Calibrated Dynamic On/Off Time and Adaptive Phase Lead Control”, IEEE J. Solid-State Circuits, vol. 47, no. 4, pp. 852-862, Feb. 2012.

2. P. -H. Chen, C. -S. Wu and K. -C. Lin, "A 50 nW-to-10 mW Output Power Tri-Mode Digital Buck Converter With Self-Tracking Zero Current Detection for Photovoltaic Energy Harvesting," IEEE J. Solid-State Circuits, vol. 51, no. 2, pp. 523-532, Feb. 2016.

3. A. Paidimarri and A. P. Chandrakasan, "A Wide Dynamic Range Buck Converter With Sub-nW Quiescent Power," n IEEE Journal of Solid-State Circuits, vol. 52, no. 12, pp. 3119-3131, Dec. 2017.

4. F. Santoro et al., "A Hysteretic Bbuck Converter with 92.1% Maximum Efficiency Designed for Ultra-Low Power and Fast Wake-Up SoC Applications," IEEE J. Solid-State Circuits, vol. 53, no. 6, pp. 1856-1868, June 2018.

5. M. S. Ahmed and A. A. Fayed, "A Current-Mode Delay-Based Hysteretic Buck Regulator With Enhanced Efficiency at Ultra-Light Loads for Low-Power Microcontrollers," IEEE Trans. on Power Electronics, vol. 35, no. 1, pp. 471-483, Jan. 2020.

6. W. -L. Zeng et al., "A 470-nA Quiescent Current and 92.7%/94.7% Efficiency DCT/PWM Control Buck Converter With Seamless Mode Selection for IoT Application," IEEE Trans. Circuits Syst. I: Reg. Papers, vol. 67, no. 11, pp. 4085-4098, Nov. 2020.

7. M. Zhao et al., "An Ultra-Low Quiescent Current Tri-Mode DC-DC Buck Converter With 92.1% Peak Efficiency for IoT Applications," IEEE Trans. Circuits Syst. I: Reg. Papers, vol. 69, no. 1, pp. 428-439, Jan. 2022.

8. W. Huang, L. Liu, X. Liao, C. Xu and Y. Li, "A 240-nA Quiescent Current, 95.8% Efficiency AOT-Controlled Buck Converter With A2-Comparator and Sleep-Time Detector for IoT Application," IEEE Trans. on Power Electronics, vol. 36, no. 11, pp. 12898-12909, Nov. 2021.

9. Z. Gao, Y. Hao, H. Wei, Y. Li and M. Chen, "A 96% Peak Efficiency Adaptively Controlled PSM Buck Converter With Low-Quiescent Current and Wide Dynamic Range for IoT Applications," IEEE Solid-State Circuits Letters, vol. 5, pp. 276-279, 2022.

10. J. -S. Kim, J. -O. Yoon and B. -D. Choi, "A High-Light-Load-Efficiency Low-Ripple-Voltage PFM Buck Converter for IoT Applications," IEEE Trans. on Power Electronics, vol. 37, no. 5, pp. 5763-5772, May 2022.

11. X. Liu et al., "A Sub-nW 93% Peak Efficiency Buck Converter With Wide Dynamic Range, Fast DVFS, and Asynchronous Load-Transient Control," IEEE J. Solid-State Circuits, vol. 57, no. 7, pp. 2054-2067, July 2022.

12. T. -H. Tsai, T. -W. Sun, K. -Y. Liao and C. -C. Chang, "A 180 nA Quiescent Current Digital Control Dual-Mode Buck Converter With a Pulse-Skipping Load Detector for Long-Range Applications," IEEE Trans. Circuits Syst. I: Reg. Papers, vol. 70, no. 7, pp. 3040-3048, July 2023.

13. B. Wang, Y. Xie, J. Guo and L. Cheng, "A 150nA IQ, 850mA ILOAD, <10mV Ripple Buck Converter with >90% Efficiency over 10μA to 400mA Loading Range," in Proc. IEEE Custom Integrated Circuits Conference (CICC), San Antonio, TX, USA, 2023, pp. 1-2.

14. T. Shimogawa et al., "An On-Chip DC-DC Converter and Power Management System Achieving Zero Standby-to-Active Transition Time in MCU," in Proc. IEEE Asian Solid-State Circuits Conference (A-SSCC), Haikou, China, 2023, pp. 1-3.

15. A. Besharati Rad, M. Kargaran, M. Meghdadi and A. Medi, "A Wide-Input-/Output-Voltage-Range Buck Converter With Adaptive Light-Load Efficiency Improvement and Seamless Mode Transition," IEEE Trans. on Power Electronics, vol. 39, no. 2.

16. Y. -W. Huang and T. -H. Kuo, "Fixed-Switching-Frequency Background Capacitor-Current-Sensor Calibration for DC–DC Converters," IEEE J. of Solid-State Circuits, vol. 57, no. 5, pp. 1504-1516, May 2022.

17. Choi M, Kye C H, Oh J, et al. “A synthesizable digital AOT 4-phase buck voltage regulator for digital systems with 0.0054mm2 controller and 80 ns recovery time,” in Proc. IEEE Int. Solid-State Circuits Conf., 2019, pp. 432-434

18. Lee B, Song M K, Maity A, et al. “A 25-MHz four-phase SAW hysteretic control DC–DC converter with 1-cycle active phase count.” IEEE J. Solid-State Circuits, 2019, 54, 1755.

19. K. Wei and D. B. Ma, "A 10-MHz DAB Hysteretic Control Switching Power Converter for 5G IoT Power Delivery," IEEE J. Solid-State Circuits, vol. 56, no. 7, pp. 2113-2122, July 2021.

20. J. -H. Cho et al. “A 1.23W/mm 83.7%-efficiency 400MHz 6-phase fully integrated buck converter in 28nm CMOS with on-chip capacitor dynamic re-allocation for inter-inductor current balancing and fast DVS of 75mV/ns,” in Proc. IEEE Int. Solid-State Circuits Conf. 2022, pp.1-3.

21. Schaef C, Salus T, Rayess R, et al. “A Imax, fully integrated multiphase voltage regulator with 91.5% peak efficiency at 1.8 to 1V, operating at 50MHz and featuring a digitally assisted controller with automatic phase shedding and soft switching in 4nm class FinFET CMOS,” in Proc. IEEE Int. Solid-State Circuits Conf. 2022, pp.1-3.

22. Y. -W. Huang, T. -H. Kuo, S. -Y. Huang and K. -Y. Fang, "A Four-Phase Buck Converter With Capacitor-Current-Sensor Calibration for Load-Transient-Response Optimization That Reduces Undershoot/Overshoot and Shortens Settling Time to Near Their Theoretical Limits," IEEE J. Solid-State Circuits, vol. 53, no. 2, pp. 552-568, Feb. 2018.

23. Hu T X, Huang M, Lu Y, et al. “A 4A 12-to-1 flying capacitor crossconnected DC-DC converter with inserted D>0.5 control achieving >2× transient inductor current slew rate and 0.73× theoretical minimum output undershoot of DSD,” in Proc. IEEE Int. Solid-State Circuits Conf. 2022, pp.1-3.

24. Yuan J Y, Liu Z G, Wu F, et al. “A 12V/24V-to-1V DSD power converter with 56mV droop and 0.9μs 1% settling time for a 3A/20ns load transient,” in Proc. IEEE Int. Solid-State Circuits Conf. 2022, pp.1-3.