![]() This table is from uPowerTek LED driver datasheet, we can see that the PWM dimming signal allows very wide voltage, from 3.8V to 10V. Users need to choose PWM dimming mode in the driver programming software. All uPowerTek drivers integrate MCU to work with PWM dimming. It also permits a high level of the reference voltage, which is above offset errors. Real PWM dimming allows a broader range of PWM frequency.Ī significant positive with the real PWM dimming is its ability to preserve the white point of the LED output. The presence of the MCU enables the PWM signal to detect peak voltages. There is a microcontroller(MCU) inside the driver. In the real PWM dimming, the LED currents turn on and off at the designated frequency and duty cycle. ![]()
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June 2023
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