Categories

Posts Tagged ‘alpha and omega semiconductor’

App note: A practical look at current ratings

Sunday, June 12th, 2016

An app note from Alpha & Omega Semiconductors about proper way of evaluating MOSFET's power handling capability based on how much loss it will generate based on the application conditions. Link here (PDF) System designers are often faced with the task of selecting the most suitable power device from a...

Tags: , ,
Posted in app notes | No Comments »

App note: How to generate a negative voltage using buck converters?

Sunday, December 20th, 2015

An app note from Alpha and Omega Semiconductor on using their AOZ1016 buck regulator to generate negative voltage. Link here (PDF) The negative voltage source is widely used in various applications such as computing systems, LCD panels, audio amplifiers, etc. Using the additional secondary winding of a transformer is the...

Tags: , ,
Posted in app notes | No Comments »

App note: Start-up test using electronic load

Sunday, December 6th, 2015

An app note from Alpha and Omega Semiconductor on importance of start-up power behavior to diagnose and prevent unwanted inrush current. Link here (PDF) Electronic loads, such as Chroma 6310 series, can be configured as constant current (CC) mode, constant voltage (CV) mode and constant resistance (CR) mode. In CC...

Tags: , ,
Posted in app notes | No Comments »

App note: Buck converter control cookbook

Sunday, December 6th, 2015

An Alpha and Omega Semiconductor app note for their AOZ101X buck controller using peak current mode control. Link here (PDF) A Buck converter consists of the power stage and feedback control circuit. The power stage includes power switch and output filter. It converts a higher input voltage to a lower...

Tags: , ,
Posted in app notes | No Comments »

App note: Selection of three locations of current sense resistor in buck converter

Sunday, November 29th, 2015

Sensing current utilizing MOSFET's Rds(on) and Inductor's DCR in different location discussed in this app note from Alpha and Omega semiconductor. Link here (PDF) In current mode converters, current sense resistor can be placed in three locations: input loop, output loop and freewheeling loop. The pros and cons are discussed...

Tags: , , ,
Posted in app notes | No Comments »

App note: Paralleling power MOSFETs in switching applications

Sunday, November 29th, 2015

Application note from Alpha and Omega semiconductor on proper design of circuit and PCB layout to balance parallel MOSFETs. Link here (PDF) This paper discusses issues involved in paralleling MOSFETs in high-power, high-frequency switching applications. It investigates root cause problems such as unbalanced voltage and current by taking a closer...

Tags: , ,
Posted in app notes | No Comments »

Recent Comments