General-purpose one-cycle controller for switching power converters: a high-speed current-mode CMOS VLSI implementation

2002 ◽  
Author(s):  
E. Alarcon ◽  
G. Villar ◽  
E. Vidal ◽  
H. Martinez ◽  
A. Poveda
Keyword(s):  
High Speed ◽  
Power Converters ◽  
Current Mode ◽  
General Purpose ◽  
Vlsi Implementation ◽  
Switching Power ◽  
Switching Power Converters ◽  
Cmos Vlsi

CMOS INTEGRATED CIRCUIT CONTROLLERS FOR SWITCHING POWER CONVERTERS

2004 ◽  
Vol 13 (04) ◽  
pp. 789-811
Author(s):  
EDUARD ALARCÓN ◽  
GERARD VILLAR ◽  
ALBERTO POVEDA
Keyword(s):  
Integrated Circuit ◽  
High Speed ◽  
High Performance ◽  
Power Converters ◽  
Correct Operation ◽  
Case Examples ◽  
Cmos Integrated Circuit ◽  
Switching Power ◽  
Switching Power Converters ◽  
On Chip

Two case examples of high-speed CMOS microelectronic implementations of high-performance controllers for switching power converters are presented. The design and implementation of a current-programmed controller and a general-purpose feedforward one-cycle controller are described. The integrated circuit controllers attain high-performance by means of using current-mode analog signal processing, hence allowing high switching frequencies that extend the operation margin compared to previous designs. Global layout-extracted transistor-level simulation results for 0.8 μm and 0.35 μm standard CMOS technologies confirm both the correct operation of the circuits in terms of bandwidth as well as their functionality for the control of switching power converters. The circuits may be used either as standalone IC controllers or as controller circuits that are technology-compatible with on-chip switching power converters and on-chip loads for future powered systems-on-chip.

Current-mode analogue integrated circuit for sliding-mode control of switching power converters

2002 ◽  
Vol 38 (3) ◽  
pp. 104 ◽  
Author(s):  
E. Alarcón ◽  
A. Romero ◽  
A. Poveda ◽  
S. Porta ◽  
L. Martı́nez-Salamero
Keyword(s):  
Sliding Mode Control ◽  
Integrated Circuit ◽  
Power Converters ◽  
Sliding Mode ◽  
Current Mode ◽  
Switching Power ◽  
Mode Control ◽  
Switching Power Converters

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.

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