High Efficiency: Up to 96% 2.5V to 5.5V Input Voltage Range 1.2/2.4MHz Constant Frequency Operation No Schottky Diode Required Low Dropout Operation:100% Duty Cycle PFM Mode for High Efficiency in Light Load Over temperature Protected Low Quie...
PFM Mode for Increased Light Load Efficiency Selectable PWM Frequency from 4 Preset Values Integrated MOSFET Drivers Integrated Bootstrap Forward P-CH MOSFET Adjustable Integrated Soft-Start and Soft-Stop Selectable Forced PWM or Automatic PFM/PWM Mode Power Good Monitoring 70% Under-Voltage Protection...
We present a high efficiency buck DC-DC converter for switch-mode Lithium-ion (Li-ion) battery charger. To achieve a high efficiency over a wide load range, the converter enters a power saving pulse-frequency modulation (PFM) mode at light load currents. And the proposed buck converter featu...
But the efficiency of the PWM mode is low in light loading current and that of the PFM mode is low in heavy load. In order to maintain high efficiency, the dual-mode of PWM and PFM circuits have been presented. But these techniques usually didn't find the best switching point. With ...
datasheets.AconverteroperatinginpowersavemodeusesPFMatlightloadcurrentsandpulsewidth modulation(PWM)atheavierloadcurrents.Thistypeofoperationallowstheconvertertomaintainhigh efficiencyoverawiderangeofoutputcurrent.Figure1andFigure2displaytwographscomparingthe
But the efficiency of the PWM mode is low in light loading current and that of the PFM mode is low in heavy load. In order to maintain high efficiency, the dual-mode of PWM and PFM circuits have been presented. But these techniques usually didn't find the best switching point. With ...
A new PWM PFM control technique for improving efficiency over wide load range
A high-efficiency PWM DC-DC buck converter with a novel DCM control under light-load This paper presents a high-efficiency PWM DC-DC buck converter with a novel discontinuous-conduction mode (DCM) control under light-load condition. It is d... CH Chia,PS Lei,CH Chang - IEEE International...
7.)PFM mode for increased light load efficiency8.)Programmable PWM Frequency from 100kHz to 500kHz9.)Selectable Forced PWM or automatic PFM/PWM mode10.)Built in 30A Output current driving capabilityIntegrate MOSFET Drivers11.)Integrated Bootstrap Forward P-CH MOSFET12.)Adjustable Integrated Soft-...
For wide range of load current variation,PWM and PFM mode show their merits in heavy and light load application respectively.Thus multimode DC-DC converter switches smoothly between them should be taken into account.Motivated by the concerns above,a high-efficiency,low-power DC-DC converter with ...