No-Load Power Reduction Technique For AC or DC Adapters - 2012


The burst-mode control is generally used to regulate the output voltage of the ac/dc adapter under either lighterno-load condition. Although the burst-mode control reduces the switching loss, the control-IC and the feedback circuit at the output side still consume a large amount of power. In order to further reduce the powerconsumption at no-load condition, a no-load power reduction technique for ac/dc adapters is proposed in this paper. At first, the proposed technique employs a control-IC ON/OFF scheme to reduce the power consumption of the control-IC while the gate signal of primary power switch is idle. In addition, an out-put voltage drop scheme is adopted to cut down on the loss of the feedback circuit because the output voltage of the ac/dcadapter is not required to be regulated when the ac/dc adapter is disconnected from the load system. Thus, the proposed technique can greatly reduce the no-load power consumption below 30 mW. To verify the validity of the proposed technique, loss analysis and experimental results of 65 W/17.5 V ac/dc adapter are presented.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE :Torque, Power, Losses, and Heat Calculation of a Transverse Flux Reluctance Machine With Soft Magnetic Composite Materials and Disk-Shaped RotorABSTRACT:During this paper, the authors introduce a kind of transverse
PROJECT TITLE : Joint Topology-Transparent Scheduling and QoS Routing in Ad Hoc Networks - 2014 ABSTRACT: This paper considers the problem of joint topologytransparent scheduling (TTS) and quality-of-service (QoS) routing in
PROJECT TITLE : Cross-Layer Aided Energy-Efficient Opportunistic Routing in Ad Hoc Networks - 2014 ABSTRACT: Most of the nodes in ad hoc networks rely on batteries, which requires energy saving. Hence, numerous energy-efficient
PROJECT TITLE :Quality-Differentiated Video Multicast in Multirate Wireless Networks - 2013ABSTRACT:Adaptation of modulation and transmission bit-rates for video multicast in a multirate wireless network is a challenging problem
PROJECT TITLE :Power Allocation for Statistical QoS Provisioning in Opportunistic Multi-Relay DF Cognitive Networks - 2013ABSTRACT:In this letter, we propose a power allocation scheme for statistical quality-of-service (QoS) provisioning

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry