A new PWM/PFM control technique for improving efficiency over wide load range
- Resource Type
- Conference
- Authors
- Chi-Lin Chen; Wei-Lun Hsieh; Wei-Jen Lai; Ke-Horng Chen; Ching-Sung Wang
- Source
- 2008 15th IEEE International Conference on Electronics, Circuits and Systems Electronics, Circuits and Systems, 2008. ICECS 2008. 15th IEEE International Conference on. :962-965 Aug, 2008
- Subject
- Components, Circuits, Devices and Systems
Pulse width modulation
Energy consumption
Voltage
DC-DC power converters
Power generation
Pulse width modulation converters
Inductors
Buck converters
Strontium
Latches
- Language
this paper proposed a novel controlling technique of pulse width modulation (PWM) mode and pulse frequency modulation (PFM) mode to keep the high efficiency within width range of loading. The novel control method is using PWM and PFM detector to achieve two modes switching appropriately. The controlling technique can make the efficiency of current mode DC-DC buck converter up to 88% at light loading and this paper is implemented by TSMC 0.35μm CMOS process.