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High-efficiency multiple-output DC-DC conversion for low-voltage systems

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3 Author(s)
Dancy, A.P. ; Synqor, Hudson, MA, USA ; Amirtharajah, R. ; Chandrakasan, A.P.

This versatile power converter controller provides dual outputs at a fixed switching frequency and can regulate either output voltage or target system delay (using an external L-C filter). In the voltage regulation mode, the output voltage is monitored with an analog-digital (A/D) converter, and the feedback compensation network is implemented digitally. The generation of the pulsewidth modulation (PWM) signal is done with a hybrid delay line/counter approach, which saves power and area relative to previous implementations. Power devices are included on chip to create the two independently regulated output PWM signals. The key features of this design are its low-power dissipation, reconfigurability, use of either delay or voltage feedback, and multiple outputs.

Published in:

Very Large Scale Integration (VLSI) Systems, IEEE Transactions on  (Volume:8 ,  Issue: 3 )

Date of Publication:

June 2000

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