Method for detecting the null current condition in a PWM...

Details Method for detecting the null current condition in a PWM... Method for detecting the null current condition in a PWM...

2005-03-15

2005-03-15

Pert, Evan (Department: 2829)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

By differentiating

C323S355000, C323S363000, C327S520000, C327S563000, C327S581000

Reexamination Certificate

active

06867634

ABSTRACT:
A method for detecting a null current condition in a PWM driven inductor connected between a voltage source node and a second circuit node of a line for outputting current to a load includes generating a derivative signal by time differentiating a voltage on the second node. The method further includes monitoring an instant when the derivative signal becomes negative, and signaling verification of the null current condition each time the derivative signal becomes negative.

REFERENCES:
patent: 5463306 (1995-10-01), Berry et al.
patent: 0507393 (1992-03-01), None

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