Issues with TPS2811 MOSFET driver for IR530 in buck SMPS design – I’m trying to build an SMPS but want to simulate it on Multisim first before I buy all the components. The buck has a 6.3V dc input and will have a 5V dc output at 2 amps. I’ve designed a buck converter and it seems […]
Power Management
Reference design for charging protocol
ON Semiconductor has introduced a reference design implementing the new Qualcomm Quick Charge 3.0 protocol. The high efficiency, small form factor reference design supports the Quick Charge 3.0 High Voltage Dedicated Charging Port (HVDCP) Class A and Class B specifications, Qualcomm’s next generation of fast charging technology for smartphones and tablets, as well as offering […]
725 V high-efficiency CV/CC flyback switching ICs
Power Integrations announced the InnoSwitch-EP family of off-line CV/CC flyback switching ICs. Featuring an integrated 725 V MOSFET, synchronous rectification and precise secondary-side feedback sensing control, the new IC family delivers excellent multi-output cross-regulation with full line protection and instantaneous transient response with less than 10mW no load consumption. The devices employ the company’s FluxLink […]
60V power MOSFETs tailored for high efficiency
STMicroelectronics has extended its trench-based STripFET F7 series of low-voltage MOSFETs with the introduction of 60V devices to enable telecom, server, and desktop-PC power supplies, as well as industrial power supplies and DC/DC converters in solar micro-inverters, to meet tough energy-efficiency specifications and maximize power density. The devices combine improved conduction efficiency and switching performance with […]
Top power electronics threads on EDAboard.com – August
Phase shift full-bridge SMPS is massively over-hyped? – The Phase Shift Full Bridge (PSFB) converter is a hoax. The LTspice simulation (Editor’s note: see post for file) of a “plain” full-bridge SMPS bears this out. PSFB claims to be able to reduce switching losses compared to the “plain” full-bridge SMPS. However, the PSFB does have turn-OFF switching losses, just […]
DC/DC buck regulators with on-time control architecture
ZSPM4023 product family ICs are constant-frequency, synchronous DC/DC buck regulators featuring an adaptive on-time control architecture. The ZSPM4023 operates over a supply range of 4.5V to 28V at a constant 600kHz switching frequency in continuous-conduction mode. The ZSPM4023 internal linear regulator provides a regulated 5V for the internal control circuitry that regulates the input signal […]
Battery pack monitor extends operating life of Li-ion batteries
OEMs are moving away from NiCd and lead-acid batteries to embrace the more environmentally friendly Li-ion battery chemistries. Li-ion batteries are smaller, weigh less, and deliver longer battery life, but require monitoring and protection for safe use. Intersil’s ISL94203 3-to-8 cell battery pack monitor functions as a stand-alone battery management system for rechargeable Li-ion battery packs. […]
Power MOSFETs for light and compact switching power conversion devices
STMicroelectronics has extended its MDmesh™ M2 series of N-channel power MOSFETs with the introduction of a new family of devices that offer high power efficiencies in power supplies for servers, laptops, telecom, and consumer applications, especially under light-load conditions. With these new devices, designers can create switching power conversion devices that are lighter and more compact, while […]
Power supply noise rejection – Technical Brief
Many of the problems facing PCB designers today are related to power supply noise. There are guidelines that can be used to solve simple issues, but, for more complex issues it is essential to understand and consider all the parameters which will help in providing an optimal and clean solution. This technical brief describes the […]
Battery Types and Operation
I came across an interesting new product recently which made me realize that I take batteries for granted without actually thinking much about how they work. I know they work and the specifications enable me to select them and design them into a product but how do they work? The product that caused my intrigue […]
