DC-DC converter with dynamically adjustable characteristics

Details DC-DC converter with dynamically adjustable characteristics DC-DC converter with dynamically adjustable characteristics

1996-03-28

1997-04-29

Krishnan, Aditya

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

H02M 3335

Patent

active

056252790

ABSTRACT:
A switching DC-DC converter, with regulation of the output, is disclosed. Unlike prior art converters, the source of the switching signal is not a free-running oscillator, but a rectangular waveform whose frequency and duty cycle parameters are under the control of an external processor. By appropriately varying these parameters, the processor dynamically modifies the characteristics of the converter, in effect optimizing its design to deal efficiently with different operating states such as circuit startup, sudden load changes the processor "knows" about in advance, and even design changes over the life of the converter. Once the processor sets up appropriate parameters for an existing or anticipated state, a hardware feedback loop regulates the output voltage of the converter by reducing the width and/or number of switching pulses. Thus, the processor is not part of the voltage regulation process but is free to devote attention to other parts of the system in which the converter resides.

REFERENCES:
patent: 5272614 (1993-12-01), Brunk et al.
Motorola applic. note AN920, .COPYRGT.1989 "Theory and Applications of the MC34063 and .mu.A 78540 Switched regulator Control Circuits", pp. 1-18 (Design & Theory).

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