Title :
A synchronous dual-output switching dc-dc converter using multibit noise-shaped switch control
Author :
May, M.W. ; May, M.R. ; Willis, J.E.
Author_Institution :
Sigmatel Corp., Austin, TX, USA
Abstract :
This alternative architecture uses a single inductor to generate two different supply voltages. The generation of two independent voltages is accomplished by synchronously regulating both the common mode and differential of the two supply voltages based solely on the output from two clocked comparators. Further, the control logic is implemented with only digital standard cells, and overcomes the quantization errors seen in another architecture through the use of a multibit /spl Sigma//spl Delta/ in generation of the PWM waveform.
Keywords :
DC-DC power convertors; comparators (circuits); quantisation (signal); switching circuits; clocked comparators; common mode; control logic; differential; digital standard cell; independent voltages; multibit noise-shaped switch control; multibit sigma-delta; quantization errors; supply voltages; synchronous dual-output switching dc-dc converter; Clocks; DC-DC power converters; Detectors; Filters; Inductors; Phase detection; Pulse width modulation; Switches; Switching converters; Voltage control;
Conference_Titel :
Solid-State Circuits Conference, 2001. Digest of Technical Papers. ISSCC. 2001 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-6608-5
DOI :
10.1109/ISSCC.2001.912672
