Power Management I Product News
New series of 20W high density DC-DC converters target industrial and rugged applications
Artesyn Embedded Technologies, formerly Emerson Network Power’s Embedded Computing & Power business, has unveiled the new AXA series of compact 20 W high power density dc-dc converters designed to be used in applications such as battery-operated equipment, instrumentation, distributed power architectures in communications and industrial electronics and other space critical-applications.
A fully potted and metal cased construction makes the Artesyn AXA series suitable for harsh environments and enables the modules to operate between minus 40 and plus 85 degrees Celsius. An optional clip-on heat sink is available to extend the thermal performance of the unit in a convection or forced-air environment. The AXA series modules cover an ultra-wide 4:1 input voltage range of 9 to 36 Vdc and 18 to 75 Vdc. The first models available offer single output models with voltages of 3.3, 5, 12, 15 and 24 V along with dual output models offering +/- 12 or 15 V, all with tight output voltage
SEMIKRON adds to its MiniSKiiP product platform
SEMIKRON has added 1700V modules with 6- pack and Converter-Inverter-Brake (CIB) circuit topology to its established family of 600V/650V and 1200V MiniSKiiP power modules. These modules are primarily used in industrial motor drives, solar inverters and power supplies. These modules have been designed to provide
both user-friendly spring technology for power and control terminals as well as simple, cost- effective and solder-free single-screw assembly of the circuit board, cooling unit and module. The 1700V MiniSKiiP portfolio consists of 6- pack and corresponding input bridge modules up to 100A and CIB modules up to 50A. The highest current density is intended to help develop cost-effective and compact inverters in order to realise the advantages of 600V/690V AC applications for cost saving. All CIB modules have separate terminals for input bridge, brake chopper and open-emitter inverter for the highest PCB design flexibility and each single
module can cover the whole three-phase application.
The migration from 400V/480V AC to 600V/690V AC voltage levels in industrial applications has become increasingly popular in the process industry, even for low-power applications. It offers several advantages related to capital cost saving and improvement of global network efficiency. The benefits, leading to cost savings, are based on reduction of: motor size, cable cross-section, maximum load current, total power losses, cable voltage-drop during normal operating condition, motor start-up current and feeding transformer size.
SEMIKRON |
www.semikron.com
Additional options now available for radiation hardened voltage references
Intersil Corporation has expanded its line of radiation hardened (rad hard) voltage references to include four new devices, the ISL71091SEH10, 20, 33 and 40. Providing voltages previously unavailable for the rad hard space market, the new family enables better overall accuracy for 11-bit and 12-bit ADC resolution applications and is stable over time, temperature and ionizing radiation, providing increased precision in satellite data acquisition, signal processing and power management applications. The ISL71091SEH20 provides a 2.048 voltage
reference specifically for commonly used 11-bit ADC resolution, and the ISL71091SEH40 provides a 4.096 voltage reference specifically for 12-bit ADC resolution. Both devices provide a reference voltage consistent with 1mV LSB. These voltage reference options enable designers to optimise accuracy within 11 and 12-bit signal processing system resolution targets, respectfully, ensuring signal processing integrity. The ISL71091SEH radiation hardened voltage
references have been designed to deliver high performance by leveraging Intersil’s SOI-based PR40 process providing Single Event Latch-up (SEL) immunity to ensure robust performance in heavy ion environments. This and other Intersil patented technologies reduce performance
30 September 2014
compromises in even the most challenging applications. This advanced bipolar technology enables the ISL71091SEH family to achieve very low output noise with an initial voltage accuracy of 0.05%. The ISL71091SEH devices provide industry leading voltage accuracy as well, +/- 0.15% over temperature (-55C to +125C) and +/-0.25% ionizing radiation.
The ISL71091SEH devices, available in the smallest surface mount leaded package available also reduce overall solution size. Sinking capability on chip eliminates the need for buffering, which reduces system complexity while also increasing overall system accuracy.
Intersil |
www.intersil.com Components in Electronics
regulation. Enclosed in a 1.0 x 1.0 x 0.4 inch (25.4 x 25.4 x 10.16 mm) package, the Artesyn AXA series offers up to 89 percent efficiency. The converters offer additional features such as overload protection, remote on/off control, input-to-output isolation voltage of 1500 Vdc, and the output voltage can be trimmed by +/- 10 percent of the nominal output. All models are approved to CSA/NTRL/IEC/EN 60950-1 for IT equipment.
Artesyn Embedded Technologies | www.
Artesyn.com
TDK Lambda introduces 60A non-isolated SMT point-of-load converters with PMBus
TDK Corporation has introduced the TDK- Lambda iJB series of 60 amp non-isolated SMT DC-DC converters for high current applications. Compact, these POL modules offer an extremely high power density and high operating efficiency from light to full load conditions; they are PMBus read and write compliant and digitally controlled, allowing for a great deal of flexibility and customisation to address a broad range of applications including communications, test, broadcast and industrial equipment. The iJB series performs local voltage conversion from 8-14VDC bus voltages at up to 93% efficiency and features adjustable output voltages from 0.6 to 2.0V with a precision set point accuracy of 0.5% and extremely accurate current read-back – the digital adaptive control feature accommodates a wide range of external load capacitance.
Measuring 26.8 x 24.1 x 9.7mm, the iJB power modules offer an extremely high power density and support easy paralleling with interleaving for implementation in higher current applications. Standard features of the iJB series include negative or positive remote on/off, Power Good signal, remote sense, configurable sequence and
fault management capabilities, and fully automatic recovery protection circuitry for over current and over voltage conditions. Models in the iJB series are approved to UL/CSA/IEC/EN 60950-1. The iJB series carries a 3-year warranty and is CE-marked in accordance with the low voltage (LV) and RoHS Directives.
TDK-Lambda |
www.uk.tdk-lambda.com
XP Power extends GCS series of open- frame AC-DC supplies up to 250 Watts
XP Power has added a 250 Watt range to its GCS series of high efficiency single output AC- DC power supplies. Certified to both industrial and medical international safety standards, and comprising 150, 180, and now 250 Watt models, the GCS series is available in multiple mechanical formats. Ensuring the range is suitable for multiple applications, the GCS series is available in an industry standard 3 x 5 inch (127 x 76.2 mm) open frame package, an enclosed covered version, and top or end- mounted fan cover options.
The open frame format allows the GCS250 to deliver up to 180 Watts by convection cooling, and the full 250 Watts when provided with only a 7 CFM airflow or when using the optional fan mounted configurations. With both Class I and Class II input construction techniques used, designers can opt to use an input earth scheme or not. These highly efficient supplies, typically up to 93% efficiency, are available with outputs covering all the popular nominal voltages from +12 to +48 VDC. A secondary 12 VDC / 0.6 A fan supply is also a standard feature, with remote on/off being available as an option. Suiting a wide range of application
environments, the GCS250 can operate over the extended temperature range of – 40 to + 70 degrees C with no derating until +50 degrees C.
The supplies operate from a wide input range of 85-264 VAC, with full power available from 90 VAC and higher.
No additional EMC filtering components are
required since the GCS series meets Class B conducted and Class A radiated criteria as stipulated by the internationally recognized standards of EN55011 and EN55022. Also, the units comply with the 3rd edition medical safety standards EN60601-1, ANSI/AAMI ES60601-1, CSA22.2 No 60601-1, and the IT equipment safety standard UL/EN 60950-1.
XP Power |
www.xppower.com
0.5/1kW AC-DC power supplies come with high power density levels
Powerstax has introduced further additions to its N series of AC-DC products. Enclosed in ultra- low profile 1U format packages, with 90VAC to 264VAC inputs supported, the NM0501 and NM1001 have 504W and 1008W outputs respectively. Both products have the capacity to deliver power efficiency levels of up to 92%, The innovative proprietary design on which the N series products are based lowers energy consumption and improves thermal performance, with minimal forced air cooling required. This means that AC loads are reduced and power system running costs can be kept in check. In addition operational increases reliability and economy of operation. Furthermore, the ultra-low profile 1U package means it can be easily implemented into designs using industry
standard 1U chassis, with the upshot that additional space is freed up for other functions. Both these units are compliant with EN60950-1 (2nd Edition) and EN60601-1 (2nd and 3rd Editions). They also meet SEMI F47 and MOPP (Means of Patient Protection) standards. Thanks to the multiple agency approvals they have received they can be implemented in industrial, commercial and healthcare application scenarios.
An I²C communications interface can be included as required. An optional O-ring function can be used in order to provide N+1 redundancy if this is deemed necessary for the power system design.
Powerstax |
www.powerstaxplc.com www.cieonline.co.uk
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