Dual-output boost converter having enhanced input operating rang

Details Dual-output boost converter having enhanced input operating rang Dual-output boost converter having enhanced input operating rang

1997-11-20

1999-04-13

Sterrett, Jeffrey

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

323266, 323271, 363 89, G05F 1613

Patent

active

058942149

ABSTRACT:
A boost converter for converting an input voltage received at an input thereof into first and second output voltages provided at first and second outputs thereof, respectively, and a method of operating the boost converter. In one embodiment, the boost converter includes: (1) a first switching circuit coupled to a first rail of the input and having a first switch and a first capacitor coupled in parallel, (2) a second switching circuit coupled to a second rail of the input and having a second switch and a second capacitor coupled in parallel, (3) a contactor, coupled between the first and second switching circuits and the first and second rails, that is controllable to achieve alternative first and second states in which: (3a) in the first state, the first and second switching circuits are coupled in series across the source of AC power and (3b) in the second state, the first and second switching circuits are coupled in parallel across the source of AC power to reduce an overall loss associated with the first and second switches and (4) a boost inductor, coupled in series with first and second switching circuits, that provides a conductive path for the input DC voltage to flow through the first and second switching circuits to charge the first and second capacitors, respectively.

REFERENCES:
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patent: 5436550 (1995-07-01), Arakawa
patent: 5627455 (1997-05-01), Jacobs et al.
patent: 5771168 (1998-06-01), Liao et al.

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