JFET

Evaluation Board Based on HVLED805: 4.2 W Isolated LED Driver with Primary-Side Current Regulation

EVALHVLED805

Overview

The EVALHVLED805 is a demonstration board equipped with the new HVLED805 PWM current mode LED driver and is designed for European mains. It can control, with very good accuracy, from 1 to 3 LEDs having a nominal current of 350 mA. The HVLED805 has integrated high voltage startup and an 800 V power MOSFET. The high MOSFET's breakdown voltage allows very robust and reliable applications and reduces the size of the snubber and the relative power dissipation. Its accurate primary-current control eliminates the need of the optocoupler which impacts the cost, the compactness and the lifetime of the application while still maintaining a very good LED accuracy (below 5 %). Moreover, this converter, specifically designed for quasi-resonant (QR) flyback converters, enables very low turn-on losses and EMI emissions.

Main features

Input voltage range (V_IN): 185 - 265 V_AC
Main frequency (f_L): 50 - 60 Hz
Maximum (rated) output power: 4.2 W
Output: I_OUT= 350 mA ± 5%
- Over voltage = 12 V max
- Current ripple < 10% IOUT
Minimum switching frequency in normal mode: 70 kHz
Target average efficiency (from 1 to 3 LEDs) > 70 %
Maximum input power in no-load

Design Files

Related Devices

Devices	Class	introduce	Datasheet
HVLED805	Analog mixed-signal IC;Drivers and interfaces	Off-line LED driver with primary-sensing up to 5W	Download

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Update:2024-11-14 23:19:45

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