Invention Grant
US09362822B2 Average load current detector for a multi-mode switching converter
有权
多模式开关转换器的平均负载电流检测器
- Patent Title: Average load current detector for a multi-mode switching converter
- Patent Title (中): 多模式开关转换器的平均负载电流检测器
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Application No.: US14096603Application Date: 2013-12-04
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Publication No.: US09362822B2Publication Date: 2016-06-07
- Inventor: Ashraf Rozek
- Applicant: RF Micro Devices, Inc.
- Applicant Address: US NC Greensboro
- Assignee: RF Micro Devices, Inc.
- Current Assignee: RF Micro Devices, Inc.
- Current Assignee Address: US NC Greensboro
- Agency: Withrow & Terranova, P.L.L.C.
- Main IPC: H02M3/156
- IPC: H02M3/156 ; H02M1/00

Abstract:
An average load current detector for a multi-mode switching converter is disclosed. The average load current detector includes a sense voltage generator that generates an average sense voltage that is proportional to an average load current delivered by the multi-mode switching converter. Also included is a duty voltage generator that generates an average duty voltage that is proportional to a duty cycle of a pulse width modulation (PWM) signal that controls switching of the multi-mode switching converter. Further included is a comparator adapted to output a detector signal that indicates an operational mode for the multi-mode switching converter to operate in for predetermined load current ranges. A controller receives the detector signal and in response maintains an efficient energy transfer from one supply voltage level to another by transitioning the multi-mode switching converter from the PWM mode to a pulse frequency modulation (PFM) mode or vice versa if necessary.
Public/Granted literature
- US20140152285A1 AVERAGE LOAD CURRENT DETECTOR FOR A MULTI-MODE SWITCHING CONVERTER Public/Granted day:2014-06-05
Information query
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