Standard LED drivers (buck topology) require that the input voltage be higher than the output voltage.
This may result in problems when working with the newest high-power LEDs and powering them from low-voltage sources like solar cells or batteries.
Buck driver solutions which must always have a higher input voltage than an output voltage, typically result in designs that require multiple drivers for multiple LED strings with lower forward voltages.
This problem has been solved with the introduction of RECOM Lighting’s new buck/boost LED driver which can deliver high voltages (up to 40 V) from a low-voltage source (as low as 8 V), simplifying the lighting system with the use of a single driver and a long single string of LEDs.
The new RBD-12 series supplies LEDs from 3 to 20 W with input voltages from 8 to 36 V, providing constant currents of 350 mA or 500 mA. The output voltage can be above or below the supply voltage by a factor of 2 (500 mA) or by a factor of 3 (350 mA), within the range from 2 to 40 V d.c.
These new buck/boost driver models are digital (PWM + remote on/off) and analog dimmable, and cover the temperature range from -40°C to +75°C. Dimensions are 32,6 x 16,6 x 11,1 mm (L x W x H) and weight is only 13 grams.
Quality batteries are critical for IIoT Uniross Batteries
Power Electronics / Power Management
Batteries intended for use in industrial operations must indeed offer complete reliability under extreme environmental conditions, resistance to vibration and harsh environments.
Read more...12 kW hybrid inverter
Power Electronics / Power Management
Sungrow recently unveiled its next-generation residential energy storage solution, expanding its power range from 5 kW to 12 kW with the introduction of the new MG12RL hybrid inverter.
Read more...40 W and 75 W railway DC/DC converter Brabek
Power Electronics / Power Management
RECOM has announced two new cost-efficient DC/DC converters for the rail market with an ultra-wide 11:1 input range to cover all nominal input voltages from 24 to 110 V DC.
Read more...Power modules for solid-state transformers RS South Africa
Power Electronics / Power Management
Microchip’s new 3,3 kV silicon carbide modules deliver the required thermal performance and efficiency for SSTs to increase power available for token generation.
Read more...Solving South African power problems with locally built intelligence
Editor's Choice Power Electronics / Power Management
Smart metering infrastructure in South Africa remains patchy. The rollout has been slow, coverage is inconsistent, and for the most part, granular per-unit measurement simply does not exist.
Read more...Wide range power module
Power Electronics / Power Management
The latest DC-DC modules from Würth Elektronik are characterised by high resilience to voltage transients on the 24 V bus and an extremely wide input-voltage range from 3,5 V to 38 V.
Read more...Selecting primary batteries for maximum service life Uniross Batteries
Power Electronics / Power Management
Primary batteries play an important role in IoT applications. Designed for longevity, they have a high-energy capacity and are often used in standalone applications where charging is impractical or impossible.
Read more...4 kW e-mobility DC-DC converter Brabek
Power Electronics / Power Management
The RECOM RMOD4000 series of compact, plug-and-play DC-DC converters is a cost-effective solution to provide isolated 14 V, 28 V, or 56 V DC network rails from a high input voltage between 180 and 950 V DC.
Read more...Aluminium case upgrade boosts performance Vepac Electronics
Power Electronics / Power Management
The SQBF Quarter Brick 300 W DC to DC Converter is now available in a newly upgraded metal case designed to deliver improved durability and superior electrical performance across demanding applications.
Read more...Extending the range of power converters RS South Africa
Power Electronics / Power Management
Power Integrations recently announced a breakthrough in flyback topology extending the power range of flyback converters to 440 W - well beyond the limits that traditionally required more complex resonant and LLC topologies.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version