Power Management I Product News
New 40 W and 60 W DIN rail power supplies feature output current adjustment
The new 40 W DRA-40 and 60 W DRA-60 DIN rail power supply series with output current adjustment are the latest in Sunpower’s response to a growing market trend in which designers are building entire systems, including power supplies and other accessories, into single DIN rail mounted units to simplify and streamline system management. These two new series’ current adjustment function allows the output current to be adjusted via a 1 – 10 Vdc, variable resistance or PWM signal. This ‘3 in 1’ dimming function provides great flexibility in systems designed to drive LED lighting, as it can be used to control LED brightness effectively.
The power supplies can be mounted on TS- 35/7.5 or TS-35/15 DIN rails, and accept a full range 90 – 264 Vac input or 127- 370 Vdc input. The DRA-40 and DRA-60 ranges each comprise two models, providing 12 Vdc and 24 Vdc outputs respectively. With a working efficiency of up to 87%, these products can work in ambient temperatures from -30°C to +70°C using only air convection cooling. Cooling fans with their associated space and reliability issues are eliminated. Being only 40 mm in width, these units are well suited to limited space applications. The DRA-40 and DRA-60 products also have
short circuit protection, overload protection, over voltage protection and front panel DC voltage adjustment. The products carry
UL/CUL/CB/TUV/CE safety certification and meet
the requirement of IEC60950-1 Limited Power Source (LPS). Typical applications include machine vision inspection systems and LED lighting for plant cultivation systems.
“These DRA-40 and DRA-60 series, as part of
our growing DIN rail mounting range, are helping us to meet popular industrial demand” commented Andy Wall, CEO of Sunpower Technology, “We’re seeing that manufacturers and users are increasingly looking for complete, DIN rail-mounted system or control solutions – including the power supply – that they can utilise or drop into an enclosure as a single, ready to use super-component.”
Sunpower Technology |
www.sunpower-uk.com
VRPower integrated DrMOS power stages deliver high current, efficiency and power density
Vishay Intertechnology has introduced a new family of VRPower integrated DrMOS power stage solutions in a low-profile, thermally enhanced PowerPAK MLP 5 mm by 5 mm 31- pin package. Delivering currents in excess of 60 A per phase, Vishay Siliconix SiC620 devices are 30 % smaller than previous-generation 6 mm by 6 mm power stages while at the same time enabling 3% higher efficiency to 95 % peak. With reduced package parasitics compared to discrete solutions, the devices enable high switching frequencies to 1.5 MHz for increased power density and lower overall solution costs. The integrated power stages released today combine high-side and low-side TrenchFET Gen IV n-channel MOSFETs with industry-benchmark on-resistance, an advanced MOSFET driver IC, and a bootstrap Schottky diode - all in a compact 25 mm² footprint area. The SiC620's gate driver IC is compatible with a wide range of PWM controllers and supports tri-state PWM logic of 5 V and 3.3 V.
Fully compliant with the DrMOS 4.0 specification, the SiC620 family is designed for high-power, multi-phase buck regulator applications in notebook PCs, servers, game consoles, graphics cards, switch and storage systems, and other high-power CPU-based systems, in addition to high-current, non- isolation point-of-load modules. Optimised for
Industry's smallest encapsulated 60 Watt AC-DC supply available in pcb or chassis mount
XP Power have introduced the ECE60 series of single output encapsulated 60 Watt AC-DC power supplies. Suiting applications that require a slim profile, a high power density and low no- load power consumption, the ECE60 is available in either PCB mount, chassis mounted with screw terminals, or in a DIN rail mount configuration.
Believed to have the smallest footprint and the highest power density of any 60 Watt power supply in the industry, the PCB mounted model measures 91.4 x 38.1 x 28.0 mm (3.6 x 1.5 x 1.1 inches) and has a power density of >10 Watts per cubic inch.
The range comprises eight models providing all the popular nominal output voltages from + 3.3 to + 48 VDC. A peak load capability allows up to 130% of rated output power to be available for up to 30 seconds in order to accommodate a higher start up current when powering a motor for example. Using this approach allows an engineer to avoid having to specify a more expensive higher rated power supply just to provide for an occasional peak load requirement. Also, with its no load power consumption of less than < 0.3 Watt and an high efficiency up to 89% the ECE60 series also ensures that end products meet the criteria of "green" energy saving initiatives.
The ECE60 meets EMC specification EN55022
for class B conducted and radiated emissions without the need for any additional filtering components. The supply is able to operate in most environments over a wide range of temperature from – 25 to + 70 degrees C with no derating until + 50 degrees C. With a Class II construction no Earth or
Ground connection is required. The ECE60 60 Watt power supply is the latest addition to the ECE series that already comprises 5, 10, 20 and 40 Watt models.
XP Power |
www.xppower.com
Intersil's integrated Li-ion battery charger safeguards backup battery in eCall systems
12 V input rails, the regulators operate from an input voltage range of 4.5 V to 16 V and provide low PWM propagation delay of < 20 ns. Offering improved levels of thermal performance, the devices feature > 50 °C cooler operation than previous-generation solutions. The devices' driver IC incorporates Zero
Current Detect circuitry to improve light-load efficiency, while an adaptive dead time control helps to further improve efficiency at all load points. Protection features include undervoltage lockout (UVLO), shoot-through protection, and a thermal warning feature that alerts the system in case of an excessive junction temperature.
Vishay Intertechnology |
www.vishay.com
Intersil Corporation has introduced the ISL78692, a 4.1V single-cell battery charger designed to extend the life of lithium-ion (Li-ion) batteries in automotive emergency call (eCall) systems. The ISL78692 battery charger dissipates lower leakage current (3uA) than competing solutions, allowing the backup battery to remain charged for a longer period of time. Lower charging voltage also extends battery life while the device's small footprint reduces total solution size. Vehicles equipped with eCall systems automatically place a call to an emergency service centre in the event of an accident. The ISL78692 Li-ion battery charger is designed to support emerging worldwide emergency call systems such as Europe's eCall initiative, which brings rapid assistance to motorists involved in a collision anywhere in the European Union, and OnStar, which provides a safety and security service in the United States.
The ISL78692 charger's ability to monitor the battery's temperature and its low, 4.1V output voltage both help to extend the life of popular LiFeP04 batteries. Highly integrated, the ISL78692 requires only five external components to program the charging current. When combined with the charger's compact 3mm x 3mm DFN package, the complete solution easily fits on space-constrained PCBs. The ISL78692
Littelfuse expands AEC-Q101 qualified automotive TVS diodes offering
Littelfuse has expanded its offering of TVS Diodes which have been optimised for automotive applications with the addition of the TPSMC and TPSMD Series. These devices are designed to protect sensitive electronic equipment from voltage transients induced by load dump and other transient voltage events. These AEC-Q101 qualified devices offer peak pulse power dissipation ratings of
30 October 2014
1500W (TPSMC) or 3000W (TPSMD) in a standard DO-214AB package. Both are well- suited for applications like DC power protection and ESD protection in automotive electronics such as electronic control units, sensors, and entertainment systems, as well as in portable devices that require high reliability. "The TPSMC and TPSMD Series offer peak pulse power dissipation ratings that are
Components in Electronics
intended for automotive applications. They allow automotive power systems to pass the different 1, 2a, 2b, 3a, 3b, and 5b surge tests operationally as specified by ISO7637-2. This standard is widely used in the automotive industry as the basis for transient specifications," explained Charles Cai, Product Marketing Manager. "These new products are also AEC-Q101 qualified, which makes them very well-suited for high reliability applications."
Littelfuse |
www.littelfuse.com www.cieonline.co.uk
also offers a unique charge current thermal foldback feature that prevents overheating by automatically reducing the battery charging current, creating a very robust, small footprint design.
"OEMs want an automotive-qualified battery charger that prevents rapid discharging of the vehicle's backup battery when parked for an extended period of time," said Philip Chesley, vice president of Intersil's Precision Products. "The ISL78692 leverages Intersil's proprietary power management technology to deliver a solution with the industry's lowest leakage current and most optimized feature set for eCall automotive applications."
Intersil |
www.intersil.com
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