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A 0.35um 50V CMOS sliding-mode control IC for buck converters

Höyerby, Mikkel; Andersen, Michael and Andreani, Pietro LU (2007) In ESSCIRC, 33rd European Solid State Circuits Conference, 2007. p.182-185
Abstract
This paper presents a hysteretic (sliding mode) control IC for a buck DC/DC converter for use as an envelope tracking power supply to increase the efficiency of an RF power amplifier. The IC integrates a high-bandwidth error amplifier, a comparator with hysteresis, and a high-side driver for an external N-channel power MOSFET. The total control loop delay using the implemented IC is 35ns, this is shown to be a 30% reduction compared to a state-of-the-art discrete IC based solution. The presented results also show that it is viable to integrate a 100MHz operational amplifier on the same die as a high-voltage MOSFET driver operating with slew rates in excess of 5V/ns. The IC is demonstrated in a tracking power supply with 30W output power... (More)
This paper presents a hysteretic (sliding mode) control IC for a buck DC/DC converter for use as an envelope tracking power supply to increase the efficiency of an RF power amplifier. The IC integrates a high-bandwidth error amplifier, a comparator with hysteresis, and a high-side driver for an external N-channel power MOSFET. The total control loop delay using the implemented IC is 35ns, this is shown to be a 30% reduction compared to a state-of-the-art discrete IC based solution. The presented results also show that it is viable to integrate a 100MHz operational amplifier on the same die as a high-voltage MOSFET driver operating with slew rates in excess of 5V/ns. The IC is demonstrated in a tracking power supply with 30W output power and 3μs rise/fall time, running from a 40V input. The complete IC, including pads, takes up 4mm2 in a 0.35μm 50V CMOS process. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
ESSCIRC, 33rd European Solid State Circuits Conference, 2007.
pages
182 - 185
external identifiers
  • Scopus:44849141101
ISSN
1930-8833
ISBN
978-1-4244-1125-2
DOI
10.1109/ESSCIRC.2007.4430275
language
English
LU publication?
no
id
d96f79da-09f5-4ad4-93c3-dc2fbe5ebceb (old id 1050952)
alternative location
http://ieeexplore.ieee.org/iel5/4430236/4430237/04430275.pdf
date added to LUP
2008-03-27 15:22:19
date last changed
2016-10-13 04:28:38
@misc{d96f79da-09f5-4ad4-93c3-dc2fbe5ebceb,
  abstract     = {This paper presents a hysteretic (sliding mode) control IC for a buck DC/DC converter for use as an envelope tracking power supply to increase the efficiency of an RF power amplifier. The IC integrates a high-bandwidth error amplifier, a comparator with hysteresis, and a high-side driver for an external N-channel power MOSFET. The total control loop delay using the implemented IC is 35ns, this is shown to be a 30% reduction compared to a state-of-the-art discrete IC based solution. The presented results also show that it is viable to integrate a 100MHz operational amplifier on the same die as a high-voltage MOSFET driver operating with slew rates in excess of 5V/ns. The IC is demonstrated in a tracking power supply with 30W output power and 3μs rise/fall time, running from a 40V input. The complete IC, including pads, takes up 4mm2 in a 0.35μm 50V CMOS process.},
  author       = {Höyerby, Mikkel and Andersen, Michael and Andreani, Pietro},
  isbn         = {978-1-4244-1125-2},
  issn         = {1930-8833},
  language     = {eng},
  pages        = {182--185},
  series       = {ESSCIRC, 33rd European Solid State Circuits Conference, 2007.},
  title        = {A 0.35um 50V CMOS sliding-mode control IC for buck converters},
  url          = {http://dx.doi.org/10.1109/ESSCIRC.2007.4430275},
  year         = {2007},
}