High efficiency single-inductor dual-control loop power...

Details High efficiency single-inductor dual-control loop power... High efficiency single-inductor dual-control loop power...

2008-07-15

2008-07-15

Nguyen, Matthew V (Department: 2838)

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

C323S282000

Reexamination Certificate

active

07400118

ABSTRACT:
A high efficiency single-inductor dual-control loop power converter (SIDL) is proposed for converting unregulated DC input into regulated DC output to a power load. The SIDL includes:an energy storage loop having: a power inductor, a power capacitor and a power diode.A PWM switching power regulating loop for converting the unregulated DC input into the regulated DC output.a power-efficiency maximizing loop in parallel connection with the power diode.The power-efficiency maximizing loop includes: a power shunt transistor in parallel connection with the power diode and a real-time control loop adjusting, in response to a freewheeling current through the power diode, conductance of the power shunt transistor in a manner that a higher freewheeling current results in a higher conductance of the power shunt transistor.

REFERENCES:
patent: 4761722 (1988-08-01), Pruitt
patent: 5923152 (1999-07-01), Guerrera
patent: 7075277 (2006-07-01), Ishii et al.
patent: 2007/0212765 (2007-09-01), Van Krieken

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