Feed-forward method for improving a transient response for a...

Details Feed-forward method for improving a transient response for a... Feed-forward method for improving a transient response for a...

2006-04-11

2006-04-11

Nguyen, Matthew V. (Department: 2838)

Electricity: power supply or regulation systems

Output level responsive

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

Reexamination Certificate

active

07026800

ABSTRACT:
In a method for a DC-DC power conversion performed by a switching mode buck voltage converter, the power conversion is split into two or more stages, and a feed-forward signal is generated by one of the stages and sent to another stage prior thereto. The feed-forward signal is generated by responding to a load current transient, such as output voltage drop, ON-duty increment or decrement occurred in the PWM control loop, error amp output swinging, and any other detectable signals in response to load current transient of the voltage converter. As a result, the performance of the DC-DC voltage converter is improved due to the prior stage modulated early in time, and both lower ripple current and peak current in steady state operations and fast response to load current transient conditions could be simultaneously obtained.

REFERENCES:
patent: 5208485 (1993-05-01), Krinsky et al.
patent: 5956246 (1999-09-01), Sequeira et al.
patent: 6437462 (2002-08-01), Maple et al.

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