Global ETD Search

1	Digitally assisted control techniques for high performance switching DC-DC converters Khan, Qadeer Ahmad 25 June 2014 (has links) Digitally controlled switching DC-DC converters have recently emerged as an attractive alternative to conventional switching converters based on analog control techniques. This research focuses on eliminating the issues associated with the state of the art switching converters by proposing three novel control techniques: (1) a digitally controlled Buck-Boost converter uses a fully synthesized constant ON/OFF time-based fractional-N controller to regulate the output over a 3.3V-to-5.5V input voltage range and provides seamless transition from buck to buck-boost modes (2) a hysteretic buck converter that employs a highly digital hybrid voltage/current mode control to regulate output voltage and switching frequency independently (3) a 10MHz continuous time PID controller using time based signal processing which alleviates the speed limitations associated with conventional analog and digital. All the three techniques employ digitally assisted control techniques and require no external compensation thus making the controllers fully integrated and highly cost effective. / Graduation date: 2013 / Access restricted to the OSU Community at author's request from June 25, 2012 - June 25, 2014 voltage regulator dc-dc converter digitally controlled dc-dc converter PWM controller PID compensator digital PWM control analog PWM control buck converter boost converter buck-boost converter LED driver hysteretic dc-dc converter high speed dc-dc converter fixed frequency hysteretic control DC-to-DC converters -- Automatic control Digital control systems

Search results

Digitally assisted control techniques for high performance switching DC-DC converters