Ways to Build Power Supply Skill Set

  When you study any of the upcoming new technologies, the main part of the system is Power Supply Unit. Power Supply Unit is the heart of the system, which supplies power to all the ICs, Controllers, Driving Circuits, etc. This places higher demands on the Power Supply Units. Recently, a company named Keysight Technologies have published an e-book titled “4 Ways to Build Your Power Supply Skill Set”. This e-book gives tips to be considered to design engineers while designing power supply. Download link: E-book Source: Keysight Technologies Advertisements

Off-line PWM Controller from STMicroelectronics Boosts Efficiency, Flexibility, and Stability of 5-30V Power Supplies

STMicroelectronics’ STCH03 offline Pulse-Width Modulation (PWM) controller combines high integration with accurate constant-current output using primary-side regulation enabling economical mobile chargers, power adapters, or auxiliary supplies to meet stringent eco-design limits for average efficiency and standby power. At heavier loads, the STCH03 maximizes efficiency by operating in quasi-resonant mode with zero-voltage switching (ZVS) controlled by detecting transformer demagnetization. The detection circuitry also provides for line-voltage feed-forward control, which ensures accurate constant-current regulation. Maintaining operation at the boundary of continuous (CCM) and discontinuous (DCM) transformer current, the STCH03 limits the converter’s maximum operating… Read More

MAX44211 Output Protection

Unwanted transients emanating from the power line back to the line-driver’s output and back-EMF generated by the coupling circuit when the load is disconnected and connected, and vice versa, create undesirable over-voltage conditions. Back-EMF is also generated when the line driver outputs are toggled from high to low impedance state, if significant current was flowing at the disconnect time. The MAX44211 power line communications driver most often is placed facing the power line with an isolating stage between them. In case of such over-stress conditions, external protection is required to protect the… Read More

Portable Variable Power Supply

In many of the project applications and testing applications, Variable DC Power supplies are used. Sometimes it happens that one can not find an AC power socket nearby testing circuit. Also, Power supplies are usually AC powered and are bulky, because of their voltage transformers, to bring anywhere near testing circuit or equipment. Hence, Portable Variable DC Power Supply is required which helps people become mobile in doing electronic projects that will need power supplies. This project uses a voltage regulator and a potentiometer that allows the user to change the output… Read More