Title:
MULTIPLE OUTPUT DYNAMICALLY REGULATED CHARGE PUMP POWER CONVERTER
Document Type and Number:
WIPO Patent Application WO2002019508
Kind Code:
A3
Abstract:
A charge pump power converter efficiently provides electrical power by dynamically controlling a switch matrix (48) of the charge pump (44). Instead of open-loop oscillator-based control, a dynamic controller (50) provides power upon demand by sensing the output voltage and changing the operating frequency of the charge pump in response. Moreover, this closed-loop dynamic control intrinsically voltage regulates the output voltage of the charge pump power converter without the inefficient addition of a step-down voltage regulator, downstream of the power converter. Additional efficiencies are achieved through maintaining the voltage ripple across the fly capacitor (Cf) and/or the load capacitor (Cl). Also, a three-state control scheme is used to charge the fly capacitor, wait for the output voltage to drop to a predetermined level, and discharge the fly capacitor. Furthermore, a multiple-output charge pump power converter provides multiple voltage levels for devices such as portable communication electronic devices.
Inventors:
NEBRIGIC DRAGAN DANILO
JEVTITCH MILAN MARCEL
GARTSTEIN VLADIMIR
MILAM WILLIAM THOMAS
SHERRILL JAMES VIG
BUSKO NICHOLAS
HANSEN PETER
JEVTITCH MILAN MARCEL
GARTSTEIN VLADIMIR
MILAM WILLIAM THOMAS
SHERRILL JAMES VIG
BUSKO NICHOLAS
HANSEN PETER
Application Number:
PCT/US2001/026661
Publication Date:
June 06, 2002
Filing Date:
August 27, 2001
Export Citation:
Assignee:
UNIV ILLINOIS (US)
International Classes:
H02M3/07; (IPC1-7): H02M3/07
Foreign References:
| DE2052382A1 | 1972-04-27 | |||
| US5345376A | 1994-09-06 | |||
| EP0818875A2 | 1998-01-14 | |||
| DE19631356A1 | 1998-02-12 | |||
| US5132895A | 1992-07-21 | |||
| US6074775A | 2000-06-13 |
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