A PWM Controller with Multiple-Access Table Look-up for DC-DC Buck Conversion

A new power regulator controller with multiple-access PID compensator is proposed, which can achieve a minimum memory requirement for fully table look-up. The proposed regulator controller employs hysteresis comparators, an error process unit (EPU) for voltage regulation, a multiple-access PID compensator and a lowpower- consumption digital PWM (DPWM). Based on the multipleaccess mechanism, the proposed controller can alleviate the penalty of large amount of memory employed for fully table look-up based PID compensator in the applications of power regulation. The proposed controller has been validated with simulation results.

Authors:

• Steve Hung-Lung Tu
• Chu-Tse Lee

Keywords:

• Multiple access
• PID compensator
• PWM
• Buck conversion.

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