Advanced Research Projects

Analysis and System-On-a- Chip Implementation of Digitally Controlled Multi-Port DC-DC Converters

Analysis and System-On-a- Chip Implementation of Digitally Controlled Multi-Port DC-DC Converters

Figure 40 Tested multiport startup.

Figure 41 Full to no-load transition response.

A power management architecture that uses digital phase control to maximize the advantages of digital control in the lowvoltage power electronics field is proposed. The implemented architecture consists of a 7-bit pipelined ADC, a PI digital controller, a digital phase controller, a digital PWM and a CMOS power device. The implemented architecture design has been submitted to MOSIS for fabrication. The proposed architecture is to stabilize a feedback loop without a current sensor from full-load to no-load conditions by using a digital phase controller. The architecture also has multiinput multi-output functionality and sets not only the sequence of on-and-off of the dcdc converters but also the device switching command signal. The converter is fabricated with AMIS 0.5-µm CMOS technology. The tested multiport startup and full to no-load transition responses are shown in Figures 40 and 41.

2005-2006 Projects

• Magnetic Equivalent Circuits Applied to Induction Machine Design
• Mathematical Field Computation as an Analytical Tool for Electric Machines
• An Extended Field Reconstruction Technique for Optimization of Permanent Magnet Synchronous Machine Drive Systems
• A Framework for the Analysis and Design of Vector Controllers for Induction Machines
• Hand-Cranked Electric Generator to Poper Remote Off-Grid Villages