Ripple-based prediction of fast-scale instabilities in current mode controlled switching converters

2012 ◽  
Author(s):  
E. Rodriguez ◽  
H. Martinez ◽  
F. Guinjoan ◽  
A. Poveda ◽  
A. El Aroudi ◽  
...  
Keyword(s):  
Current Mode ◽  
Switching Converters ◽  
Controlled Switching

INTERMITTENT CHAOTIC OPERATION IN SWITCHING POWER CONVERTERS

2004 ◽  
Vol 14 (08) ◽  
pp. 2971-2978 ◽  
Author(s):  
S. C. WONG ◽  
C. K. TSE ◽  
K. C. TAM
Keyword(s):  
Power Converters ◽  
Current Mode ◽  
Switching Converters ◽  
Current Sensing ◽  
Coupling Process ◽  
Switching Power ◽  
Controlled Switching ◽  
Switching Power Converters ◽  
Intermittent Chaos ◽  
Spurious Signals

In the process of designing and constructing switching power converters, chaotic operations are often observed intermittently between long periods of regular operations. In practice, such intermittent chaotic operations can be eliminated by incorporating appropriate design measures to combat interference of spurious signals. In this paper, we explain the mechanism that causes "intermittent" chaos in a popular type of switching converters, namely, current-mode controlled switching converters. The circuit model used to study the phenomenon incorporates a coupling process through which a spurious signal is coupled to the current sensing and ramp compensation circuitry, resulting in a modulation of the compensation slope which causes the system to become unstable intermittently. We show that coupling of spurious signals into the compensation ramp can cause intermittent chaotic or subharmonic operations.

Universal Compensation Ramp Auto-Tuning Technique for Current Mode Controls of Switching Converters

2018 ◽  
Vol 33 (2) ◽  
pp. 970-974 ◽  
Author(s):  
Pei-Hsin Liu ◽  
Yingyi Yan ◽  
Fred C. Lee ◽  
Paolo Mattavelli
Keyword(s):  
Current Mode ◽  
Switching Converters ◽  
Auto Tuning

scholarly journals Dynamics of current controlled switching converters under wide circuit parameter variation

2012 ◽  
Vol 61 (22) ◽  
pp. 220502
Author(s):  
Bao Bo-Cheng ◽  
Yang Ping ◽  
Ma Zheng-Hua ◽  
Zhang Xi
Keyword(s):  
Parameter Variation ◽  
Circuit Parameter ◽  
Switching Converters ◽  
Controlled Switching
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