Infineon Technologies Austria Ag

Ramanjaneya Rachumalla

Paul Sisson

During diode emulation mode, a controller controls a magnitude of current supplied by an inductor of a power converter to produce an output voltage that powers a dynamic load. In response to detecting that a magnitude of the current crosses a threshold level, the controller: i) deactivates a first switch such as a low-side switch of the power converter, and ii) starts a timer. The controller monitors a magnitude of the output voltage following deactivation of the first switch. Via the timer, the controller measures a time duration between a time of starting the timer and a trigger event of the output voltage falling below a setpoint reference voltage. In response to the output voltage falling below the setpoint reference, the controller i) selects a setting of a pulse width as a function of the time duration, and ii) activates a second switch, such as a high-side switch of the power converter, for the selected pulse width.

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Warwick, RI, United States of America

Ramanjaneya Rachumalla