LED driver

LED driver
TOWN EL GROUP supply a wide spectrum of LED-drivers.

For example, LED-driver features:
Input voltages: 85-265V AC
Output voltages: 24-36V DC
Output current: 300MA
PF: ≥0.55
Warranty: 3 years
Protection: short-circuit/over-load/over-voltage/over-temperature
Built-in active PFC function
Cooling by free air convection
100% full load burn-in test
Suitable for LED lighting and moving sign applications
Current limit: ±5% rated output current
Protection type: constant current limiting type
Over-voltage: shutdown and latch off O/P voltage, re-power on to recover
Over-temperature: 85°C ±10
Protection type: shutdown O/P voltage, re-power on to recover

Offline controller for LED lighting HVLED001

Offline controller for LED lighting HVLED001
Offline controller for LED lighting with constant voltage primary-sensing and high power factor.

The HVLED001 is an enhanced peak current mode controller capable of controlling mainly high power factor (HPF) flyback or buck-boost topologies in LED drivers having an output power up to 150 W. Some other topologies, like buck, boost and SEPIC can also be implemented.

ST’s innovative high voltage technology allows direct connection of the HVLED001 to the input voltage in order to both start up the device and monitor the input voltage without the need for external components.

Advanced features are embedded to control either the output voltage or output current precisely and reliably using a reduced number of components, mainly passive. Startup and light-load conditions are managed by dedicated operating schemes to improve the quality of output variable regulation in the final application. Abnormal conditions such as open circuit, output short-circuit, input overvoltage/undervoltage, and circuit failures such as open loop and overcurrent of the main switch are effectively controlled.

A smart auto-recover timer (ART) function is built in to guarantee automatic application recovery, without loss of reliability.

Source STMicroelectronics

HVLED001 Datasheet and ordering information

LEDs achieve lower system cost over mid-power LEDs

In the latest advancement, Cree announces the new XLamp MHD-E and MHD-G LEDs combine the high lumen density and reliability of a ceramic chip-on-board
LED to more effectively achieve lower system cost over mid-power LEDs.

Building off the MH family, the new ceramic XLamp MHD LEDs simplify development, increase design flexibility and improve manufacturing efficiency
compared to mid-power LEDs while enabling new designs and significantly lowering system costs. The MHD LEDs deliver chip-on-board performance to lighting
manufacturers that prefer surface mount technology, making it easier for them to achieve lower system cost than with the same commoditized mid-power
LEDs that everyone is using. The XLamp MHD-E and MHD-G LEDs are ideal for semi-directional, high-lumen applications such as downlight, high bay and outdoor area applications.