PRODUCTS POWER ELECTRONICS SMALL SCALE SOLATED RS-485 DIFFERENTIAL BUS TRANSCEIVER
mode transient immunity (CMTI) in a small 4mm x 5mm QSOP package that is claimed to be 70% smaller than similar devices. It also provides 600VRMS of working voltage, which is approximately 50% higher than the nearest alternative. This transceiver integrates the
A
small scale, isolated RS-485 differential bus transceiver has
ll l i l t d RS 8
been released by Intersil Corporation, designed to provide 4Mbps bidirectional data transmission for Industrial Internet of Things (IIoT) networks. The high-speed ISL32704E has good levels of electromagnetic interference (EMI) and common-
company’s giant magnetoresistance (GMR) technology to provide galvanic isolation that keeps the communication bus free from common-mode noise generated in electrically noisy factory and building automation environments. The solution is ideally suited for
the equipment-to-bus interface in IIoT networks that connect programmable logic controllers (PLCs) to instruments, robots,
motor drives, data acquisition and digital I/O modules. The company claims, the advantage of its ISL32704E GMR isolation over other isolation technologies is its low radiated emission and low EMI susceptibility. In addition, its GMR isolation does not require the elaborate encoding schemes found in capacitive and transformer- based isolators that use RF carriers or pulse-width modulation (PWM) to transfer DC and low frequency signals across the barrier. This device also offers some 80%
less power consumption than other devices because it doesn’t use current hungry power transfer coils or transformers.
www.intersil.com
POL DC-DC CONVERTERS POWER SUPPLIES MEET 4TH EDITION IEC60601-1-2 FOR MEDICAL DEVICES
Excelsys Technologies has announced that its complete product range now meets the requirements of the 4th Edition (EMC) of IEC60601-1-2 making them all suitable for use in medical applications. The most recent product introductions,
including the company’s CoolX600 Series 625W convection-cooled modular power supply, and all future products will be designed to meet all relevant and latest industrial and medical approvals. The designs of the company’s Ultimod, Xgen and Xsolo product ranges have now all been reviewed and certified and meet the requirements of the 4th Edition (EMC) of IEC60601-1-2. All of the company’s modular power supplies are economically priced, offer good performance
and efficiencies and are housed in 1U high single, four or six slot enclosures. Fully isolated output modules may be configured by users in series or parallel to provide an off-the-shelf-custom power supply solution delivering from 200 to 1340W output power. In addition, the company’s Xsolo range of single output 500W and 1000W power supplies with PMBus digital communications has also been certified to the latest standard.
www.excelsys.com
Murata has expanded its OKD series of Digital PoL DC-DC converters by launching its 90 A/162W OKDx-T/90 series from Murata Power Solutions. This is the highest current-rated product in the company’s OKD series, which already provides solutions from 6A to 60A. This series is ideally suited for FPGA & processor applications. The module is specified to operate over a Vin range of 7.5V to 14V and provides a user-adjustable Vout in the range of 0.6V to 1.8Vdc with efficiency of up to 94%. This solution is available in three different package configurations: 1. SIP measuring just 2.0 x 0.37 x 0.75 in (50.8 x 9.51 x19.05mm)
2. Horizontal mounting TH (Through-Hole) 3. SMT versions measuring 2.0 x 0.75 x 0.39 in (50.8 x 19.05 x 10mm) The OKDx-T/90 is ideal for space-
constrained embedded applications.
www.murata.com
The Powertron PCS Series has been designed, incorporating VPG’s own Bulk Metal Foil technology, combining high- precision resistors with both high power and a low temperature coefficient of resistance (TCR). This has resulted in a power current sensor which offers high- precision measurements, without the need for compensation for external temperature effects. Units are offered in 73 standard packages, with resistance ranges from 1mOhm to 10Ohms, a TCR down to 3ppm, and load stability and resistance tolerances to ±0.01%.
www.vpgfoilresistors.com
DC/AC INVERTERS PROVIDE UP TO 4500VA AND ECO WORKING MODE A
series of Sine Wave DC/AC inverters has recently been introduced by Powersolve
that provides between 1000 and 4500VA from a DC input between 40 to 60VDC. The company claims this makes them ideal for 48VDC – based telecoms systems. There is a total of five models in the PJN
Series each designed around the latest high efficiency Sinusoidal PWM (SPWM) inversion technology and all incorporating an energy- saving ECO working mode. All five models provide 230VAC ±2% (±15% in ECO Mode) and offer power outputs of 1000, 1500, 2000, 3000 or 4500VA. Output frequency is 50Hz ±0.5%. The 3kVA
24 MARCH 2017 | ELECTRONICS
unit is available with optional N+1 redundancy. Designed for front-end maintenance, each inverter incorporates alarms for battery low and inverter failure and protection against over- voltage, overload, short circuit, over temperature and utility bypass. Front panel LEDs indicate inverter, battery and fault conditions while an RS232 interface provides communications. The 1000VA & 1500VA units are housed in a
1U high 19in rack enclosure. The 2000VA & 3000VA are 2U while the 4500VA comes in a 440 x 440 x 3U case. AC Input connection is via screw terminals while output connection is by IEC and screw terminals.
www.powersolve.co.uk
/ ELECTRONICS
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