Peer-to-peer, engineer-to-engineer questions and answers from the EDABoard.com engineering community around power electronics. Click the “Read more” link and follow the entire conversation and maybe add your two cents by logging in to EDAboard.com Voltage single-phase active front end rectifier – In OrCad 16.6, I used PI regulator and PWM, but my simulation is making errors… […]
Converters
Key factors in power supply selection
It pays to understand a few important electrical parameters that can dictate the kind of applications specific power supplies can handle. Florian Haas | Traco Power Group A few basic factors go into the selection of low-voltage dc/dc and ac/dc power supplies for OEM use. At the risk of stating the obvious, the key objective […]
Switchers say bye-bye to EMI
Electromagnetic interference can emanate from high di/dt loops found in some switch-mode supply topologies. New controllers overcome these difficulties by integrating key components inside the chip package. Tony Armstrong | Power by Linear, Analog Devices Inc. It goes without saying that PCB layout sets functional, electromagnetic interference (EMI) and thermal behavior of every power supply […]
Wide-input-range, dc-dc converters optimized for railway traction
XP Power has introduced two series of wide input range, cost-effective, high-power density dc-dc converters for railway traction and rolling stock applications. The dc-dc converters’ wide input ranges reduce inventory requirements and enable them to be used across a wide range of applications. The 20W rated RDE20 series feature a 4:1 input range covering 24, […]
DC/DC 15/20/30-W 1×1-in converters optimized to drive LDO regulators in low ripple/noise apps
TRACO Power announces the expansion of their THN 15/20/30 WI series of 15, 20 and 30 W dc/dc converters in the standard 1.00 x 1.00 x 0.40” inch package with ultra-wide 4-1 input ranges. These new 15 / 20 / 30 watt 5Vout models with “-A1” suffix feature an extended trim range up to 6VDC. […]
Evaluation platforms wring out dc/dc railway converters up to 240 W
Evaluation platforms for dc/dc railway converters up to 240 W are available in either high voltage (-1) or high current (-2) layouts and include a RIA12 surge stopper. The R-REF04-RIA12-1 and R-REF04-RIA12-2 are complete reference designs for railway applications. The R-REF04-RIA12-1 board is populated with components rated for higher dc input voltages up to 110 […]
Linear vs. switching power supplies: Not always an easy choice
There are some uses that demand the low noise and fast response only available through traditional linear supplies. ALEX KARAPETIAN | ACOPIAN TECHNICAL CO. ASK almost any engineer about linear power supplies and the likely instinctive reaction will be, “Sorry, I can’t use them — they’re too inefficient.” Any possibility of using a linear supply […]
Low power dc/dc converters boast precise outputs
RECOM has extended its low power DC/DC portfolio with the R0.5ZX and R1ZX series. The R0.5ZX and R1ZX are based on the 2kVDC isolated low-profile R1SX SMD series but include an internal linear regulator to give a precise, load independent and low noise output. The already low output ripple and noise can be reduced to […]
High-reliability 40-W dc/dc converter offers 10-year warranty
Cosel Co, Ltd announced the release of the MGF40 high-reliability 40W DC/DC converter. Packaged in an industry standard 1×1 inch, six-sided, shielded metallic case, the MGF40 series has been designed to Cosel’s strict criteria for high performance and reliability, contributing to the company’s world-class quality with a failure rate of below 30 parts-per-million (ppm). To […]
DIN-rail 960-W supply provides 1,440 W of peak power
A 960-W-rated model to the DRF series ac-dc DIN rail mount power supplies is 95% efficient and produces little internal waste heat, enabling electrolytic capacitors to run cool, providing a calculated life of in excess of eleven years with a 75% load at 230-Vac input. The unit can supply a peak load of 1,440 W […]
