Ripple regulator with improved initial accuracy and noise immunity
AssigneeTexas Instruments Incorporated
InventorsDale J. Skelton, Steven C. Jones, Taylor R. Efland, Lester L. Hodson
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AssigneeTexas Instruments Incorporated
InventorsDale J. Skelton, Steven C. Jones, Taylor R. Efland, Lester L. Hodson
Estimating the term…
A DC--DC converter having an input node receiving an input voltage V.sub.IN and generating an output voltage V.sub.OUT. A reference voltage generator provides a voltage V.sub.REF and a hysteresis voltage generator provides a voltage V.sub.HYST. A first comparator generates a signal determined from a difference between V.sub.REF and V.sub.OUT. A second comparator generates a signal determined from a difference between V.sub.OUT and V.sub.HYST. A latch is coupled to receive the outputs of the first and second comparators, and to generate an output. A driver circuit receives the latch output and generates a PWM signal used to switch the output stage. A double pulse suppression circuit masks off the latch inputs for a preselected time during the switching intervals fo the main power transistors to eliminate noise jitter.
A DC--DC converter comprising:
A hysteretic comparator for comparing a sample voltage comprising:
A method of generating a pulse width modulated signal for driving an output stage of a regulator, the regulator including an input stage receiving an input voltage V.sub.IN and an output stage providing an output voltage V.sub.OUT, the method comprising the steps of:
Dependencies are inferred from the claim text.