Qualcomm Incorporated

Zoran Janosevic

Stephen Frankland

Hardik M Patel

Gregory Simon Walsh

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

A transmitter circuitwith a first characteristic controllable by a first control signal and a second characteristic controllable by a second control signal is calibrated using a calibration method to enable accurate power control. The transmitter circuitwill typically comprise a VGA amplifierand a power amplifierTypically, the gain of the VGA amplifieris controlled and so is the current supplied to the power amplifierThe method comprises a number of operations including defining a set of multiple signal values for the first control signal, setting the first control signal to a level corresponding to a signal value from the set of multiple first control signal values. Then the second control signal is adjusted to cause the transmitter to operate in a desired manner and the power in a signal transmitted by the transmitter is measured. The setting, adjusting and measuring is repeated for each signal value in the set of multiple first control signal values.

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Reading, United Kingdom

Zoran Janosevic