Oscillator for DC—DC converter

Details Oscillator for DC—DC converter Oscillator for DC—DC converter

2005-06-21

2005-06-21

Kinkead, Arnold (Department: 2817)

Oscillators

Phase shift type

C331S175000, C323S222000, C323S282000, C327S536000

Reexamination Certificate

active

06909335

ABSTRACT:
An oscillator for a DC-DC converter, which is able to obtain constant frequency by using trans-conductance value as a clock of the DC-DC converter to make an output insensitive for process changes, comprises: a trans-conductance unit calculating trans-conductance value according to input voltage, deciding and outputting current according to the input voltage; a capacitor charged by the current outputted from the trans-conductance unit; and an amp-type Schmitt trigger comparing the voltage charged in the capacitor to threshold voltage, and outputting the compared value.

REFERENCES:
patent: 6147541 (2000-11-01), Seesink

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