Universal-input, single-output SMPS has passive power factor correction
11 August 2004
Power Electronics / Power Management
Taiyo Yuden's PAS250 is the second model in its new PAS Series of passive PFC-based, switch-mode power supplies for 1U-height single-output applications.
Like the company's 150 W companion model (PAS150), the PAS250 provides economic benefits to OEMs through use of passive versus active PFC technology. Not only is active PFC more complex and less reliable than passive, says the company, but active also provides unnecessary functionality at higher cost, the result of the recent declassification of many Class D end devices to less stringent Class A harmonic distortion standards per EN61000-3-2. The PAS250 switcher not only meets all Class A PFC requirements, but also provides greater reliability and higher MTBF (mean time between failure) through use of fewer components. Also, the relative cost per Watt of a passive PFC switcher like the PAS250 is significantly less than a comparable switch-mode power supply employing active PFC techniques, according to the company.
The PAS250 switcher provides a universal 115/230 V a.c. input selection and a single output of 250 W continuous power. The user may select one of several factory-set output voltages, including 12, 24 and 48 V. It features optional current-sharing capability for 1+1 redundancy with no special interconnection requirement.
Other options include remote on/off, and droop or single- wire current sharing with OR-ing diodes. The standard unit provides superior heat dissipation, but is also available with optional fan. It is protected against overload, overvoltage, reverse voltage and thermal conditions. It measures 17,8 x 10,2 cm and is 38 mm high.
Further reading:
The role of bidirectional charging in the evolving energy landscape
Avnet Silica
Power Electronics / Power Management
As reliance on renewable sources like wind and solar continues to grow, the need for efficient energy flow and storage solutions has become more critical than ever.
Read more...
How to calculate a buck converter’s inductance
Power Electronics / Power Management
In the buck circuit, the inductor design is a key element that is closely related to system efficiency, the output voltage ripple, and loop stability.
Read more...
High-current EMI filters
Accutronics
Power Electronics / Power Management
TDK has introduced 20 and 40 A, 80 V DC board-mount EMI filters, reducing differential mode conducted emissions for switching power supplies with high input current requirements.
Read more...
Isolated SMD DC-DC converters
iCorp Technologies
Power Electronics / Power Management
MinMax has launched a series of isolated SMD DC-DC converters, the MSU01 series delivering 1 W, while the MSU02 series offers 2 W output.
Read more...
Next-gen power meter
Electrocomp Express
Power Electronics / Power Management
The VT-PWR-LV is a next-gen Vista Touch power meter from Trumeter for single, split, and three-phase systems.
Read more...
Advanced PMIC for high-performance AI applications
ASIC Design Services
Power Electronics / Power Management
Microchip Technology has announced the MCP16701, a Power Management Integrated Circuit (PMIC) designed to meet the needs of high-performance MPU and FPGA designers.
Read more...
New SiC power MOSFET
Future Electronics
Power Electronics / Power Management
STMicroelectronics’ SCT012H90G3AG is a robust, automotive-grade SiC MOSFET, engineered for demanding power electronics, featuring a 900?V drain-source voltage and exceptionally low on-resistance of 12?mO at 60?A.
Read more...
Fundamental motor control design challenges and solutions
Power Electronics / Power Management
Mouser Electronics has announced a new eBook in collaboration with Qorvo, featuring industry experts providing key insights into methods, power efficiency and integration solutions available for motor control applications.
Read more...
Power management IC for battery products
Power Electronics / Power Management
The nPM1304 PMIC complements Nordic’s nPM1300 PMIC with a highly integrated, ultra-low power solution and precision fuel gauging for small size battery applications.
Read more...
Powering Innovation eBook: Changing what’s possible
Power Electronics / Power Management
This exclusive read, entitled ‘Changing what’s Possible,’ delves into how power dense Vicor modules enable many world-changing innovations across various sectors.
Read more...
printer friendly version