A new 1050W model has been introduced by Emerson Network Power, expanding its line of bulk front end AC/DC power supplies that meet the Climate Savers Computing gold standard for EFFICIENCY. The new DS1050-3 has a power density of 19W per cubic inch and can achieve a high typical conversion efficiency of 92 percent at 50 percent full load.

The company’s front-end power supply line-up offers ratings up to 3kW and feature industry-leading efficiency and density in standard 1U, 2U or 3U form factors for applications using distributed power architectures, such as computing, storage, networking, datacom, and test and measurement systems.

The DS1050-3 generates a main payload output of 12VDC and an auxiliary output of 3.3VDC, or 5VDC as an option, for powering standby circuitry. It features a wide 90 to 264VAC input voltage range and employs active power factor correction to minimize input harmonic current distortion and ensure compliance with the international EN61000-3-2 standard, with a power factor of 0.99 typical. To simplify incorporating the new power supply in equipment designs, it accepts the widely available IEC C14 ac input power connector.

Digitally programmable, the Emerson Network Power DS1050-3 is equipped with an I2C interface available with industry-standard PMBus communications protocol. It also contains a memory device (EEPROM) that is pre-programmed with data about the unit, including its type, serial number and date of manufacture, to facilitate replacement in the field.

With active single-wire current sharing that operates from 10 percent to 100 percent of load, multiple supplies can be easily paralleled for very high-current applications. The DS1050-3 is hot pluggable, has no minimum load requirement, and incorporates low-loss internal ORing Field Effect Transistors (FETs) on its main 12V output, for fault-tolerant and N+1 redundant applications.

The DS1050-3 incorporates fan cooling with automatic speed control and has an ambient operating temperature range of -10C to +50C, with 50 percent derating at +70C. It is comprehensively protected against overload and overvoltage conditions and delivers a demonstrated mean time between failures (MTBF) of more than 500,000 hours. The power supply meets the rigorous EN55022-B and FCC part 15 Class B conducted and radiated emissions standards, and holds a full complement of international safety certifications: UL/cUL, NEMKO+ CB, EN60950, CE Mark and China CCC, says the company.

This article was taken from: electropages.com

Proprietary thermal management technology, utilized in Crydom’s new SeriesOne DR line offers 6A and 12A single and 6A dual-channel output ratings in compact 11mm and 18mm wide DIN-Rail mounted solid-state relays (SSRs).

The SeriesOne DR family SSRs are intended for use in heating, lighting and motion-control applications where DIN-Rail mounting is preferred and higher output power ratings are required. Featuring a proprietary thermal management design with no exposed hot metal surfaces for safety, the SeriesOne DR family includes AC output ratings at 40C ambient for single-channel models of either 6A or 12A, and dual AC output models with 6A per channel, each rated at either 12 to 280VAC or 24 to 600VAC. DC output model ratings at 40C ambient include single-channel versions rated at either 6A or 12A and 1 to 60VDC or 1 to 100VDC.

The SeriesOne DR features 4 to 32VDC, 90 to 140VAC, 208 to 265VAC or 18 to 36VAC inputs and includes an LED input status indicator. The 6A single-channel versions are 11mm wide while the 12A single-channel and 6A dual-channel SSRs each measure 18mm, all mounting on the industry standard 35mm DIN-Rail.

AC output versions offer 3.75kV all solid-state optical isolation with SCR outputs and are available in either zero voltage turn-on for resistive load applications, or random turn-on for inductive load applications. DC outputs offer 2.5kV all solid-state optical isolation with FET output for either resistive or inductive load applications. SeriesOne DR SSRs are RoHS and China RoHS compliant, CE certified, UL and cUL recognized including both general-purpose and motor-controller ratings, says the company.

This article was taken from: electropages.com

Now available from MSC Vertriebs, YDS 12D-R2W series DC-DC CONVERTERs feature a standard single-in-line package measuring just 19.5mm x 7.1mm x 10mm and generate output voltages of 5, 9, 12, 15 or 24V from inputs of 12, 15 or 24V. They offer a line regulation of ±0.5% maximum for input voltage variations of ±10% and a load regulation of better than ±1.5%. In addition the 12D-R2W series ‘guarantees’ an input-to-output isolation of 3000VDC, says the company.

The 12D-R2W series is designed for an operating temperature limit of 100C. From -40C to +85C the converters deliver the full output power of 2W. With low ripple and noise, continuous short-circuit protection and a MTBF rating (MIL-HDBK.217F) of 1.5 million hours minimum the 12D-R series converters are seen as ideal for local generation of sensor excitation voltage, supply voltage for analog front ends in digital systems, interface circuits and countless other applications. With standard pin-out the 12D-R2W series can replace unregulated 2W DC-DC converters.

The HFE1600 Series, comprising 1U high, single-output AC-DC hot-swap front-end power supplies has been introduced by TDK-Lambda, offering ‘industry leading’ power density for a 1.6kW front-end of 25.2W/in3, says the company.

Intended for equipment requiring reliable 12V, 24V and 48V bulk power, typical applications include communications, broadcast, military (COTS), laser and process control. Up to 20% output voltage adjustment is possible, enabling the HFE1600 to be user set according to specific needs. Operating from a universal 85 to 265VAC input, the high EFFICIENCY of up to 92% minimises heat dissipation and power consumption thus meeting Climate Savers Computing efficiency standards.

With dimensions of 300mm x 85mm x 41mm, the HFE1600 power supplies can be used individually or up to five units can be mounted into a dedicated 1U available from TDK-Lambda rack delivering 8kW. A total of ten units can be configured in parallel to form a hot-swap N+1 redundant power system with single wire current sharing. Alternatively different voltage models can be mixed and matched to customer requirements. A keying system prevents mis-insertion of different voltage units. Each power supply has variable-speed cooling fans and can operate in temperatures ranging from -10C to +70C.

Output voltage is programmable by resistance, external voltage or optional PM Bus compatible I2C communication interface. Output current is external voltage or PM bus programmable.

Over-voltage, over-current and over-temperature are standard protection features and front-panel mounted DC OK and LEDs are provided for visual monitoring. For system monitoring there are opto-isolated signals for DC OK, AC-fail, over temperature and ‘power supply present’. Remote ON/OFF control and remote sense are included. Monitoring is also available via the optional I2C interface and includes a fan fail alarm.

The HFE1600 supplies comply with EN55022 and FCC Class A radiated and Class B conducted emissions and meet IEC61000-4 immunity. The units are safety approved to EN/IEC/UL 60950-1 edition 2 with CE mark, says the company.

This article was taken from: electropages.com

The LTM4627, a new 15A DC-DC uModule regulator has been introduced by Linear Technology. It has onboard inductors, MOSFETs and supporting components in a 2.6g, 15mm x 15mm LGA (land grid array) package.

Circuit design enhancements lower gate capacitance MOSFETs and stronger MOSFET drivers enable the LTM4627 to operate at approximately 7% higher EFFICIENCY or to deliver up to 15A load current in the same board area and junction temperature as the 10A DC-DC uModule regulator. (Comparison conditions: 12Vin, 1.2Vout, 10A compared to the LTM4600 10A uModule regulator. The LTM4600 is offered in 15mm x 15mm x 2.82mm and LTM4627 in 15mm x 15mm x 4.32mm LGA).

The LTM4627 can convert input supplies ranging from 4.5V to 20V to output voltages from 0.6V to 5V, regulating the output with only +/-1.5% total DC output error maximum. Multiple LTM4627 devices can be paralleled for current sharing up to 60A. Applications include telecom servers, networking and industrial equipment, medical imaging systems as well as avionics equipment.

The LTM4627 has an onboard differential remote sense amplifier to precisely regulate very low voltage, high current loads such as 1V or sub-1V core voltages of FPGAs and ASICs. Remote sensing corrects voltage errors caused by the impedance of PCB traces when large current flows to the load. Output voltage tracking and soft-start features allow controlled power up and power down of a complex board with multiple power rails. The device’s PLL (phase-locked loop) function permits users to synchronize the LTM4627 to a clock frequency from 250kHz to 780kHz, avoiding a specific frequency or frequency range that may interfere with sensitive components.

The LTM4627 is ‘guaranteed’ for operation from -40C to 125C, says the company.

This article was taken from: electropages.com

XP Power announced what is believed to be the world’s smallest open frame 45 W AC-DC power supply. Setting a new benchmark at this power level, measuring just 2 x 3 x 1.05 inches (50.7 x 76.2 x 26.7 mm), the ECS45 single output power supply is 25% smaller than the current industry standard of 2 x 4 inches. All models have a no load power of less than 0.3 W, helping the end equipment comply with internationally recognized energy efficiency standards. In addition, these convection cooled units are highly efficient, typically 87%, resulting in less waste heat to dissipate. The lower profile ECS25 model provides 25 W output within the same footprint. They can provide full power output up to + 50 degrees C without the need for any external fans or forced airflow and operate up to + 70 degrees C with derating.

Both models provide the nominal outputs of +12, +15, + 24 or +48 VDC. The ECS45 is also available with a single +5 VDC 6 A output. They have a wide input voltage range of 80-264 VAC and are approved for Class I and Class II applications. The units meet UL60601-1 / EN60601-1 medical equipment safety standards and UL60950-1 / EN60950-1 standards for IT and industrial equipment. They also comply with the EN55011 / EN55022 level B standard for conducted emissions without the need for additional filtering components. Overvoltage, overload and short-circuit protection features are included as standard across the whole range.

The power supplies suit designers of medical, IT or industrial equipment.
Applications can cover a wide variety, such as broadcast equipment, computing and data storage. The medical safety approval makes it suitable for products such as portable medical devices, home healthcare devices and personal drug delivery equipment.

Covered versions of each model are also available for Class I installations. Both series have a 3 year warranty and are available from Newark or direct from XP Power

This article was taken from: gotopower.net

The power-factor-corrected HTK series single-output, low-voltage switch-mode power supplies offer a wide choice of case types, output connectivity, front panels, and 11 different output voltages between 3.3V and 54V. The units offer a maximum output power of 198W for 3.3V model and 300W for all others. The HTK400 supplies have a maximum output power of 400W, except for the 3.3V unit, which has a maximum output power of 264W. The supplies accept an input between 90 and 264 Vac and exhibit a typical active power factor correction to 0.99. The entire series is available in enclosed, U-channel, and open-frame variations and without a front panel or with one of four options: IEC inlet only, terminal block only, power switch and IEC inlet, or power switch and terminal block. The output connector can be a barrier type terminal block, euro type terminal block or a Molex type connector. HITEK POWER CORP., Santee, CA. (619) 258-7700.

This article was taken from: Electronic Design