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LEDD10_24_P – Rev. 2018-1.2

Specifications subject to change without notice.

LEDD10_24_P Series

Constant current power LED driver - Wide Input - Non-Isolated & Regulated

PWM dimming control

Recommended AC input circuit

For PWM dimming signals with a certain frequency, the output current of

the driver is related to the duty ratio of PWM signal. Refer to the

formula for the calculation method:

Note: The formula is for reference only; and deviation of output current

may exist due to various loads. The min. conducted time of PWM signal

shall not be less than 0.8ms, or the product will be in abnormal operati-

on; in case of low voice from the driver during PWM dimming, it is normal

since the PWM dimming frequency is within the auditory frequency range

of human ears (20Hz-20KHz in general). To prevent seeing flash of the

LED by human eyes, it is suggested to set the PWM dimming frequency

between 100-200Hz.

Note: Add circuit ① may let the ESD level of PWM-control pin reach to ±6KV.

EMC solution-recommended circuit

Components

Specifications

Tvs

SMC51A,1500W (ON)

L1

CD53-82µH (CEAIYA)

C1

470µF/100V (NCC)

C2

225K/50V 1210 X7R (TORCH)

C3

104K/50V 0805 X7R (TORCH)

C4

105K/50V 1210 X7R (TORCH)

C5

102K/2000V 1210 (TDK))

choose or no)

C6

470pF/100V 0805 (TORCH)

R1

680Ω

0805 (can be

replaced by inductance or

magnetic bead)

Components

Specifications

C1

X1 Safety capacitor,

0.1µF /300VAC (QIYA)

C2

100µF /63V Electrolytic

capacitor, 10×16 (Flat surface)

NCC

D1, D2, D3,

D4

Rectifier diode

1N4007 1A/1000V

D0-41(PANJIT)

LEDD10_24_P

LEDD10_24_P