Title :
Integrated Digital Control Scheme for Fully Integrated High Frequency DC-DC Power Converter
Author :
Shi, Nan ; Hess, Hebert L.
Author_Institution :
Univ. of Idaho, Moscow
Abstract :
A digital control scheme for fully integrated high frequency DC-DC power converter is presented in this paper. A resonant converter current mode control algorithm uses a varactor-based control to obtain a regulated output voltage. Control algorithm is based on an accurate estimate of output voltage response and a state machine-based formulation. Employing a current-mode approach simplifies computation nicely, enabling an efficient and effective control algorithm. Typical response time for voltage regulation is 430 ns for a 500 MHz system. Eight-bit data conversion is used in this design. The control system is built on TSMC 0.25 mum mixed- signal process. Simulation results verified the design.
Keywords :
DC-DC power convertors; digital control; resonant power convertors; varactors; TSMC mixed-signal process; current-mode approach; eight-bit data conversion; fully integrated high frequency DC-DC power converter; integrated digital control; output voltage response; regulated output voltage; resonant converter current mode control; state machine-based formulation; varactor-based control; voltage regulation; Control systems; DC-DC power converters; Data conversion; Delay; Digital control; Frequency conversion; Resonance; Signal processing algorithms; State estimation; Voltage control; Regulation; computation; digital; estimate; mixed-signal; simulation;
Conference_Titel :
Microelectronics and Electron Devices, 2008. WMED 2008. IEEE Workshop on
Conference_Location :
Boise, ID
Print_ISBN :
978-1-4244-2343-9
Electronic_ISBN :
978-1-4244-2344-6
DOI :
10.1109/WMED.2008.4510656
