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KC24H-1000X2 Datasheet(PDF) 5 Page - MORNSUN Science& Technology Ltd. |
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KC24H-1000X2 Datasheet(HTML) 5 Page - MORNSUN Science& Technology Ltd. |
5 / 5 page The copyright and authority for the interpretation of the products are reserved by MORNSUN KC24H A/1-2012 Page 5 of 5 For the rated frequency PWM dimming, the output current of driver matters to the pulse width of the PWM signal. and the numerate please refer to the following formula: T Io_norm Io_set = (DT-0.75) Io_set refers to the expected output current value (mA) , Io_norm refers to the rated output current (mA) , D refers to the pulse width of the PWM signal (%),T refers to the cycle of the PWM signal (ms). Note: The formula only supplies as a reference, and the output current may be a little deviation with different load. The Ton(min) of PWM signal must be greater than 0.75ms, or the driver can ’t operate normally. It is natural for the driver to generate an audibly noise in dimming process, because the frequency of the control circuit is within human audibly range (20Hz~20KHz). In order to avoid the human eye can observe the LED flashes, the PWM dimming frequency is recommended to set above 100Hz. PWM curve(Vin=24V,5LEDs): PWM Frequency VS Output current(D=50%) 0 100 200 300 400 500 600 80 100 125 150 175 200 250 PWM Frequency KC24H-1000X3 KC24H-1200X3 Output current VS Pulse width of the PWM signal (f=200Hz) 0 100 200 300 400 500 600 700 800 900 1000 20 30 40 50 60 70 80 90 Pulse width of the PWM signal KC24H-1000X3 KC24H-1200X3 (Figure 5) PWM Frequency VS Output current(D=50%) (Figure 6) Output current VS Pulse width of the PWM signal (f=200Hz) 3) Analogue Dimming Control And Application Example 1st LED Last LED KC24H-xxxX3 +Vin GND 5K1 5K6 On/Off (Optional) 0-10V 22,23 2,3 14,16 9,11 4 21 +LED -LED 0% 100% Voltage Control(0-15V max) 0.2 V 1V 2V 3V 4V 5V 1 5V Analogue Input Voltage (Figure 7) Analogue dimming circuit (Figure 8) Output current VS analogue input voltage 4) No parallel connection(output) or plug and play Note: 1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed. 2. All specifications measured at Ta=25 °C, humidity<75%, nominal input voltage and rated output load unless otherwise specified. 3. In this datasheet, all the test methods of indications are based on corporate standards. 4. Only typical models listed, other models may be different, please contact our technical person for more details. 5. Our company offer custom products. 6. Specifications subject to change without notice. MORNSUN Science & Technology Co.,Ltd. Address: No. 5, Kehui St. 1, Kehui development center, Science Ave., Guangzhou Science City, Luogang district, Guangzhou,P.R.China. Tel: 86-20-38601850 Fax:86-20-38601272 Http://www.mornsun-power.com |
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