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Showing 1 to 6 of 6 for “"Pulse frequency modulation (PFM)"”.
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45nm direct battery DC-DC converter for mobile applications
… 75% is obtained for a 20[mu]W load at 3V. Both pulse width modulation (PWM) and pulse frequency modulation (PFM) modes of control are used. A new digital pulse width modulator (DPWM) architecture is presented which provides 75% area savings over the conventional delay line and counter based …
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Design of a wide input supply range buck-boost converter
… input drops to 0.3V. The converter operates in Pulse Frequency Modulation (PFM) mode during steady-state. Synchronous rectification operations are supported for the buck-boost converter through the implementation of a novel anti-backflow current system which greatly reduces the quiescent current …
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A Two-mode Buck Converter toward High Efficiency for the Entire Load Range for Low Power Applications
… First, the baby buck mode converter adopts pulse frequency modulation (PFM) with discontinuous conduction mode (DCM) to lower the switching frequency at light load, so frequency-dependent switching and driving losses are reduced. Second, a simple control scheme, constant on-time V2 control, …
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A Two-Phase Buck Converter with Optimum Phase Selection for Low Power Applications
… control for low-power range, and implementing a pulse frequency modulation (PFM) control scheme with discontinuous conduction mode (DCM) to lower switching frequency. The first method is to adopt the baby-buck concept through power stage design of each phase to optimize efficiency for a specific …
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Analysis and Design of a DCM SEPIC PFC with Adjustable Output Voltage
… half bridge series resonant circuit (SRC). High frequency magnetic field is induced through the switching action to heat the pan. The power level is usually controlled through pulse frequency modulation (PFM). In such configuration, first, a bulky input differential filter is required to filter …
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Time-based control techniques for integrated DC-DC conversion
… techniques for the design of high switching frequency buck converters are presented. Using time as the processing variable, the proposed controller operates with CMOS-level digital-like signals but without adding any quantization error. A ring oscillator is used as an integrator in place of …