The TPS4000 series is fully featured with isolated AC Fail, DC Good and dropped phase signals, remote on/off, remote sense, and a 12V 0.3A standby supply.  A PMBus communications interface allows remote monitoring of the output voltage, output current, internal temperature, status signals, and fan speed.  In addition, the output voltage, over current limit and the remote on/off can be programmed by the PMBus.  The output voltage can also be adjusted from 9.6 to 14.1V and the current limit point by 70-105% using front panel potentiometers or an analog 0-5Vdc voltage.  Up to eight units can be connected in parallel for higher power and internal ORing FETs allow redundant operation.  

The TPS4000-12 can operate at full load in ambient temperatures of up to 50^oC and deliver up to 55% load at 70^oC.  Cooling is provided by an internal temperature-controlled fan to reduce acoustical noise. The case measures 107 x 84.4 x 335mm, making it suitable for 2U high-racking systems. The weight of the product is just 4kg.

The power supply has 3kVac input to output, 2kVac input to ground, and 500Vdc output to ground isolation.  All TPS models are certified to IEC/EN/UL/CSA 62368-1 and carry the CE and UKCA marks for the Low Voltage, EMC, and RoHS Directives.  The TPS4000 also complies with EN55032-A (conducted and radiated emissions), SEMI F47-0706 (line dips), IEC 61000-3-2 (harmonics), IEC 61000-4 (immunity), and is designed to meet the MIL-STD-461F/G CS101, CS114 (Army Ground), CS115, and CS116 immunity standards.

The post Power supply operates from 400/440/480 Vac Delta and Wye inputs appeared first on Power Electronic Tips.

Bel has positioned itself at the forefront of assessing power supplies utilizing GaN technology, offering a promising route towards achieving higher power density and improved efficiency when compared to the equivalent silicon MOSFETs. This makes it an ideal fit for the EOS Power series, renowned for its ultra-miniature size and exceptional efficiency in delivering power solutions.

The EOS Power EPG300 Series and EPG500 Series of AC-DC power supplies accommodate a universal input voltage of 90 – 264 VAC, delivering up to 300 W and 500 W of output power with forced air cooling. The power supplies are available in six single-output voltages ranging from 12 V to 58 V. Both can be used in a broad array of space-constrained applications in which minimal power loss and easy thermal management are required. 

RoHS compliant and CE marked, the power supplies are safety agency certified and meet the latest regulatory requirements. The EPG300 and EPG500 fit traditional open-frame power supply uses in situations where improved power density and increased power is needed. The benefits in tougher thermal environments make these products well-suited for RF applications, 5G systems, industrial process control, automation and monitoring, modern digital signage, video walls, and more.

The new EPG power series are available immediately. Please contact Bel for stocking package pricing or modified and custom designs.

The post Ultra-miniature ac-dc power supplies are GaN-based appeared first on Power Electronic Tips.

The 8-channel switches, ISO808, ISO808A, ISO808-1, and ISO808A-1, drive all types of industrial loads – capacitive, resistive, and inductive – with one side connected to the ground. Typical uses are in programmable logic controllers (PLC), industrial PCs, and computer numerical control (CNC) machines, especially where isolation is needed to increase protection for sensitive smart-factory electronics.

The ISO808 and ISO808A have a current limit of 0.7A, while the ISO808-1, and ISO808A-1 have a limit of 1A. The ISO808 and ISO808-1 provide a separate input pin for each channel and allow either direct control or synchronous operation driving all outputs simultaneously. The ISO808A and ISO808A-1 have a serial SPI input and feature an open-drain power-good (Pgood) indicator to aid system management. All switches have a dedicated fault indicator pin.

Overload protection operates independently on each channel, so non-overloaded channels can continue operating normally. Any overloaded channels are turned off and automatically restarted to permit rapid recovery with minimal host intervention. The channel is shut down again if the fault remains, detected by monitoring the channel and case temperatures. There is also ground disconnection protection, reverse-polarity protection, short-circuit protection, thermal case protection, and under-voltage shutdown for both the control-side (VDD) and process-side (VCC) power rails. Communications across the isolation barrier are by RF, which maximizes noise immunity. Internal logic reports any data errors and a watchdog ensures the process-stage outputs are safe if the control-side supply voltage is missing.

The performance and features of these switches help ensure industrial applications meet applicable international standards including IEC 61000 specifications for electrostatic discharge (ESD), electrical transients, and power-frequency magnetic-field immunity. They comply with UL1577 and UL508 isolation specifications and VDE 0844-11 safety limits.

While pin-compatible with other popular switches, ST’s ISO808 family delivers the extra benefits of lower RDS(on) and the power-good pin of the SPI-input variants.

An extensive development ecosystem supports the ISO808 family, presenting an additional advantage over alternative devices. Four X-NUCLEO industrial digital-output expansion cards (X-NUCLEO-OUT11A1, -OUT12A1, -OUT13A1, and -OUT14A1) for STM32 Nucleo development boards accelerate evaluation, while the graphical application, STSW-IFAPGUI, eases configuration and control.

The ISO808 family is now available in a PowerSO36 package, priced from $5.56 for orders of 1000 pieces.

The post High-side switches add less than 260 mΩ appeared first on Power Electronic Tips.