PI’s Previous Research on Power Management ICs
The PI’s expertise is in the field of integrated power electronics. The PI has authored and coauthored extensively in peer-reviewed IEEE publications related to power management ICs.
Some recent pioneering work in the power management ICs has been published in premier
journals and conferences such as IEEE Custom Integrated Circuits Conference (CICC), IEEE
International Solid-State Circuits Conference (ISSCC), IEEE Journal of Solid-State Circuits
(JSSC), IEEE Transactions on Circuits and Systems-I and II (TCAS-I, TCAS-II), etc. Extensive
design experience in the field of power management ICs will be an asset for successfully
carrying out this project. The following table summarizes the recent test-chip projects completed
by the PI and PI’s students with the key accomplishments listed.
Year
2005
2006
2007
2008
2009
Process
0.6µm CMOS
0.35µm CMOS
0.35µm CMOS
0.35µm CMOS
0.35µm CMOS
Design
SC
DC-DC Regulator
LDO
Integrated
Full-Wave Rectifier
Integrated
DC/DC Converter
Integrated
DC/DC Converter
ISSCC 2005 [1]
JSSC 2007 [2]
CICC 2006 [3]
JSSC 2007 [4]
CICC 2007 [5]
JSSC 2009 [6]
ISCAS 2008 [7]
TCAS-I [8]
(accepted for
publication)
TCAS-II 2009 [9]
(accepted for
publication)
Chip
Micrograph
Publications
Year
2009
2009
2009
2009
Process
0.35µm CMOS
0.35µm CMOS
0.35µm CMOS
0.35µm CMOS
(LBC7)
Design
Charge Pump
Soft-Start Circuit
Charge Pump
Integrated DC-DC
Converter
CICC 2009 [10]
JSSC [11]
(submitted for
publication)
TCAS-II 2009 [12]
TVLSI [13]
(submitted for
publication
TPE [14]
(submitted for
publication)
Chip
Micrograph
Publications
References:
[1] H. Lee and P. K. T. Mok, “A SC dc-dc converter with pseudo-continuous output regulation
using a three-stage switchable opamp,” IEEE International Solid-State Circuit Conferences
(ISSCC), Feb. 2005, pp. 288 - 289.
[2] H. Lee and P. K. T. Mok, “A SC voltage doubler with pseudo-continuous output regulation
using a three-stage switchable opamp,” IEEE Journal of Solid-State Circuits (JSSC), vol.
42, pp. 1216 - 1229, Jun. 2007.
[3] M. Al-Shyoukh, H. Lee, and R. Perez, “A transient-enhanced 20mA-quiescent 200mAload low-dropout regulator with buffer impedance attenuation,” IEEE Custom Integrated
Circuits Conference (CICC), Sep. 2006, pp. 615 - 618.
[4] M. Al-Shyoukh, H. Lee, and R. Perez, “A transient-enhanced low-quiescent current lowdropout regulator with buffer impedance attenuation,” IEEE Journal of Solid-State Circuits
(JSSC), vol. 42, pp. 1732-1742, Aug. 2007.
[5] S. Guo and H. Lee, “An efficiency-enhanced CMOS rectifier with comparator-controlled
switches for transcutaneous-powered high-current implants,” IEEE Custom Integrated
Circuits Conference (CICC), Sep. 2007, pp. 385 - 388.
[6] S. Guo and H. Lee, “An efficiency-enhanced CMOS rectifier with unbalanced-biased
comparators for transcutaneous-powered high-current implants,” IEEE Journal of SolidState Circuits (JSSC), vol. 44, pp. 1796 – 1804, Jun. 2009.
[7] M. Du and H. Lee, “A 2.5MHz, 97%-accuracy on-chip current sensor with dynamicallybiased shunt feedback for current-mode switching dc-dc converters,” IEEE International
Symposium on Circuits and Systems (ISCAS), May 2008, pp. 3274 - 3277.
[8] M. Du and H. Lee, “An integrated speed- and accuracy-enhanced CMOS current sensing
circuit with dynamically-biased shunt feedback for MHz current-mode buck regulators,”
IEEE Transactions on Circuits and Systems-I (TCAS-I), accepted for publication.
[9] H. Lee and S. Ryu, “An efficiency-enhanced DCM buck regulator with improved
switching timing of power transistors,” IEEE Transactions on Circuits and Systems-II
(TCAS-II), accepted for publication.
[10] X. Zhang and H. Lee, “An efficiency-enhanced auto-reconfigurable 2x/3x SC charge pump
for transcutaneous power transmission,” IEEE Custom Integrated Circuits Conference
(CICC), Sep. 2009, accepted for publication.
[11] X. Zhang and H. Lee, “An efficiency-enhanced auto-reconfigurable 2x/3x SC charge pump
for transcutaneous power transmission,” IEEE Journal of Solid-State Circuits (JSSC), Sep.
2009, submitted for publication.
[12] M. Al-Shyoukh and H. Lee, “A compact ramp-based soft start circuit for voltage
regulators,” IEEE Transactions on Circuits and Systems-II (TCAS-II), vol. 56, pp. 535 –
539, Jul. 2009.
[13] X. Zhang and H. Lee, “A low-voltage efficiency-enhanced integrated charge pump in
standard CMOS process,” IEEE Transactions on VLSI Systems (TVLSI), submitted for
publication.
[14] M. Du and H. Lee, “A 5-MHz 91% peak power efficiency buck regulator with autoselectable peak- and valley current sensing scheme,” IEEE Transactions on Power
Electronics (TPE), submitted for publication.