High bandwidth current mode amplifier for envelope modulated RF amplifiers

2010 ◽  
Vol 46 (13) ◽  
pp. 894 ◽  
Author(s):  
G.T. Watkins
Keyword(s):  
Current Mode ◽  
Rf Amplifiers ◽  
High Bandwidth

scholarly journals One Clock-Cycle Response 0.5 m CMOS Dual-Mode DC-DC Bypass Boost Converter Stable over Wide Variations

2010 ◽  
Vol 2010 ◽  
pp. 1-9
Author(s):  
Neeraj A. Keskar ◽  
Gabriel A. Rincón-Mora
Keyword(s):  
Clock Cycle ◽  
Current Mode ◽  
High Accuracy ◽  
Equivalent Series Resistance ◽  
Dual Mode ◽  
Worst Case ◽  
Sigma Delta ◽  
Boost Converters ◽  
High Bandwidth ◽  
On Chip

Power supplies in portable applications must not only conform and adapt to their highly integrated on-chip and in-package environments but also, more intrinsically, respond quickly to fast load dumps to achieve and maintain high accuracy. The frequency-compensation network, however, limits speed and regulation performance because it must cater to all combinations of filter capacitor , inductor L, and 's equivalent series resistance resulting from tolerance and modal design targets. As such, it must compensate the worst-case condition and therefore restrain the performance of all other possible scenarios, even if the likelihood of occurrence of the latter is considerably high and the former substantially low. Sigma-delta () control, which addresses this issue in buck converters by easing its compensation requirements and offering one-cycle transient response, has not been able to simultaneously achieve high bandwidth, high accuracy, and wide compliance in boost converters. This paper presents a dual-mode boost bypass converter, which by using a high-bandwidth bypass path only during transient load-dump events was experimentally 1.41 to 6 times faster than the state of the art in current-mode boost supplies, and this without any compromise in compliance range (0–50 m, 1–30 H, and 1–350 F).

Editorial. Current-mode analogue signal processing

1990 ◽  
Vol 137 (2) ◽  
pp. 61 ◽  
Author(s):  
Chris Toumazou ◽  
John Lidgey ◽  
Brett Wilson
Keyword(s):  
Signal Processing ◽  
Current Mode ◽  
Analogue Signal

DC to Single-Phase AC Grid Connected Inverter with Boost Type Active Buffer Circuit Operated in Discontinuous Current Mode

2018 ◽  
Vol 138 (5) ◽  
pp. 453-462
Author(s):  
Jun-ichi Itoh ◽  
Tomokazu Sakuraba ◽  
Hoai Nam Le ◽  
Hiroki Watanabe ◽  
Keisuke Kusaka
Keyword(s):  
Single Phase ◽  
Current Mode ◽  
Grid Connected Inverter
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