产品概述
描述
The STEVAL-ILL042V1 demonstration board is a LED power supply in high PF flyback configuration able to drive a 60 W LED array. The board is based on the L6562AT and the TSM101 controller.
This configuration uses an isolated feedback with an optocoupler and a secondary side reference/error amplifier, the TSM101, for voltage and current regulation.
The TSM101 includes two op-amps. One op-amp is used for constant voltage control and the other one for constant current control.
The L6562AT is a PFC controller operating in transition mode. The highly linear multiplier includes a special circuit which is able to reduce AC input current distortion, allowing wide-range mains operation with an extremely low THD, even over a large load range.
Efficiency is high at heavy load, more than 90% is achievable.
This system, designed using the L6562AT and the TSM101 controller, offers several advantages in terms of output current and voltage stability.
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所有功能
- Mains voltage range: VACmin= 185 Vac, VACmax= 265 Vac
- Minimum mains frequency: fL= 47 Hz
- DC output voltage: Vout= 130 V
- Maximum output current: Iout= 0.462 A
- Minimum switching frequency: fSWmin = 57 Hz
- Reflected voltage: VR = 195 V
- Leakage inductance spike: Vspike= 100 V
- Expected efficiency: 92 %
- RoHS compliant