Dialog Semiconductor (uk) Limited

Erik Mentze

James T Doyle

Kevin Yi Cheng Chang

Ibiyemi Omole

Jonathon Stiff

Xiaoying Yu

Qing Li

Aysel Yildiz

A multi-phase switching power converter includes a panic mode detector that triggers the activation of each phase in an open-loop mode of operation in which an open-loop duty cycle is used that is greater than a closed-loop duty cycle used during closed-loop operation for the active phases.

Multi-phase DC-DC converters with open-loop PWM for transient performance enhancement

A two-stage multi-phase switching power converter operates its first stage during nominal operation responsive to a nominal clocking frequency and operates its second stage during the nominal operation responsive to a second-stage clocking frequency that is greater than the nominal clocking frequency. In response to an application of a load, the first stage temporarily increases its clocking frequency from the nominal clocking frequency and implements a fixed duty cycle.

Two-stage multi-phase switch-mode power converter with inter-stage phase shedding control

A circuit and a method for power conversion and for generating an output voltage in accordance with a reference voltage are presented. The power converter has a circuit for filtering the output voltage, an error amplifier circuit that compares the reference voltage and the filtered output voltage for generating an error voltage as a result of the comparison. There is a circuit for driving one or more switching devices in dependence on the error voltage. The error amplifier circuit has a first differential circuit and a first bias current generation circuit for generating a first bias current for the first differential circuit, a second differential circuit and a second bias current generation circuit for generating a second bias current for the second differential circuit, and a circuit for redistributing the first bias current to the second differential circuit or redistributing the second bias current to the first differential circuit.

Adaptive amplification active filter for divider-less high frequency DC-DC converters

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Chandler, AZ, United States of America

Erik Mentze