Qualcomm Incorporated

Gregory Simon Walsh

Hardik M Patel

Zoran Janosevic

Mathieu Jaloux

In one embodiment, a circuit comprises a sense circuit configured to sense an increase in an output voltage of a switching regulator under a light load condition. A pulse generating circuit generates a control signal to switch on and off a voltage input to the switching regulator. The pulse generating circuit reduces in a binary manner a switching frequency of the control signal under the light load condition as the sensed output voltage increases. As the output voltage rises, a clock signal is divided by two to remove every second pulse and applied to the pulse generating circuit. Further increases in the output voltage cause divisions of the clock frequency by four to remove 3 of 4 pulses so that only every fourth pulse remains. With output voltage increases, the frequency is divided by eight to remove 7 of 8 pulses so that every eighth pulse remains, and so forth.

Switch mode power supply including binary pulse skipping

An apparatus for providing an oscillating signal to a load comprises: a phase locked loop, PLL, comprising a feedback loop; a power control means for manipulating oscillating signal power; an isolator for isolating the feedback loop from the load; and a mode selector coupled to the power control means and the isolator, for controlling the power control means and the isolator so that in a steady state power mode, oscillation power is supplied to the load and in a reduced power mode, power is isolated by the isolator from the load to the feedback loop so that phase lock is maintained when the oscillation power is reduced.

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Middlesex, United Kingdom

Gregory Simon Walsh