Frequency response analysis of proposed digital control system for DPWM-POL

This paper will discuss about the proposed hardware logic type digital controller for on-board SMPS which has a very small time-delay in control loop. Experimental results of the load current change experiment and the frequency characteristic of open loop transfer function has been described respectively. These results reveal the validity of the proposed technique.

[1]  Yoichi Ishizuka,et al.  A Low-Delay Digital PWM Control Circuit for DC/DC onverters , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[2]  D. Maksimovic,et al.  Impact of digital control in power electronics , 2004, 2004 Proceedings of the 16th International Symposium on Power Semiconductor Devices and ICs.

[3]  S. Saggini,et al.  Fully-digital hysteretic voltage-mode control for dc-dc converters based on asynchronous sampling , 2008, 2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition.

[4]  Jurgen Alico,et al.  Multiphase optimal response mixed-signal current-programmed mode controller , 2010, 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[5]  Seth R. Sanders,et al.  Quantization resolution and limit cycling in digitally controlled PWM converters , 2003 .

[6]  Dragan Maksimovic,et al.  Near time-optimal transient response in DC-DC buck converters taking into account the inductor current limit , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[7]  R. Bell,et al.  Revolutionary advances in distributed power systems , 2003, Eighteenth Annual IEEE Applied Power Electronics Conference and Exposition, 2003. APEC '03..

[8]  Aleksandar Prodic,et al.  High-frequency digital PWM controller IC for DC-DC converters , 2003 .

[9]  Aleksandar Prodic,et al.  Minimum-Deviation Digital Controller IC for DC–DC Switch-Mode Power Supplies , 2013, IEEE Transactions on Power Electronics.

[10]  S. Saggini,et al.  Hysteresis-Based Mixed-Signal Voltage-Mode Control for dc-dc Converters , 2007, 2007 IEEE Power Electronics Specialists Conference.

[11]  O. Garcia,et al.  Hysteretic Mixed-Signal Controller for High-Frequency DC–DC Converters Operating at Constant Switching Frequency , 2012, IEEE Transactions on Power Electronics.

[12]  A. T. L. Lee,et al.  Adaptive prediction in digitally controlled buck converter with fast load transient response , 2012, 2012 IEEE 13th Workshop on Control and Modeling for Power Electronics (COMPEL).

[13]  Yan-Fei Liu,et al.  Digital charge balance controller with low gate count to improve the transient response of buck converters , 2009, 2009 IEEE Energy Conversion Congress and Exposition.