In addition to increased efficiency, noise and ripple levels have been reduced by utilizing an LLC resonant topology and an active filter. Designed for use in a wide range of applications, the LHA150F and LHA300F models offer a broad operating temperature range of -10 to +70 degrees Celsius. These power supplies are UL/EN62368-1 certified.
With increasing levels of system integration, factory automation requires more compact power supplies capable of operating with the highest safety standards in a variety of environments. Meeting the Level III overvoltage protection (OVCIII) category specified in EN62477-1, Cosel's LHA150F and LHA300F models offer system designers a simple and easy-to-use AC/DC power supply that meets the high isolation levels required for connecting equipment to the facility's distribution panel, without the need for an additional isolation transformer.
Designed for worldwide applications, the LHA150F and LHA300F have an input voltage range of 85VAC to 264VAC single-phase and comply with safety standards for the 100-240VAC (50/60Hz) input voltage range.
The 150W LHA150F is available in four output voltages: 12V/12.5A, 24V/6.3A, 36V/4.2A, and 48V/3.2A. The 300W LHA300F offers three output voltages: 12V/25A, 24V/12.5A, and 48V/6.3A. The output voltage can be adjusted using a potentiometer, which is standard on the LHA300F and optionally available on the LHA150F (Y option).
In addition to their optimized switching topology, which delivers an energy efficiency rating of up to 93.5%, the LHA150F and LHA300F automatically switch to an energy-saving mode using intermittent pulse modulation to reduce power consumption when the unit is operating under light loads or in standby mode. This contributes to excellent performance and high reliability. The power supplies include inrush current protection, overcurrent protection with automatic recovery when the default setting is removed, and overvoltage protection.
The units are designed to operate from -10 to +70 degrees Celsius and can be mounted in any orientation, although power reduction may be necessary depending on the ambient temperature and environment.
In noise testing, the LHA150F and LHA300F met FCC-B, VCCI-B, CISPR11-B, CISPR32-B, EN55011-B, and EN55032-B standards. To further enhance acoustic performance, COSEL offers IEC61000-3-2 (Class A) compliant harmonic attenuation filters, type EAC-03-472 for the LHA150F and EAC-06-472 for the LHA300F. The units have an isolation voltage of 3,000VAC input to output, 2,000VAC input to ground, and 500VAC output to ground.
Designed for use in demanding applications where space is limited, the LHA150F measures 75 x 27 x 160 mm (2.95 x 1.07 x 6.30 in) and weighs 320 g. The LHA300F measures 84 x 37 x 180 mm (3.31 x 1.46 x 7.09 in) and weighs 580 g.
Additional options are available for specific applications: Option C for a protective coating to improve moisture resistance, Option G for lower leakage current (0.15 mA max.), Option J4 for input and output EP connectors, and Option Y for an output voltage potentiometer.
The LHA150F and LHA300F are suitable for a wide range of applications, including measurement and analysis equipment, machine tools and industrial robots, display equipment, and semiconductor manufacturing equipment. They comply with the RoHS directive and are CE marked in accordance with the Low Voltage Directive.
