LPU-150C Datasheet, PDF (4/8 Pages) PAIRUI GROUP INC. – Constant current LED Drivers

Constant current LED Drivers
For outdoor use
LPU-150C Series, 150Watt
ELECTRICAL
PWM Dimming
The PWM dimming is a dimming manner that can be used to dim the output current via the duty cycle of PWM signal.
The dimming range is 100% Iout to 5% Iout. When the duty cycle is 100%, the output current reaches 100% Iout, and the
output current maintains 5% Iout when the duty cycle below 5%.
When the PWM signal is low the driver will shut down and it will recovery when the duty cycle goes above 5%.
See “PWM Dimming Curve” for detailed information.
Parameters
Symbols
Test Conditions / Comment
Min. Typ. Max. Units
PWM Frequency
F_PWM
---
0.1
--
2
KHz
High Level Voltage of
PWM Signal
V_PWM-High
---
4
--
1.2
V
Lower Level Voltage
of PWM Signal
V_PWM-Low
---
0
--
1
V
Minimum Output
Current
I_OUT-MIN
When duty cycle below 5%
--
5
-- _{% of Iout}
Timer Dimming
The Timer Dimming is designed with time controlled dimming function, it will dim to 50% of rated output current after
operating six hours.
See “ T Type Dimming Curve” for detailed information.
Full Load Operated
Time
T_{FULL-LOAD-TTYPE} ^{Note1, The dimming time and 5.5}
6
6.5
Hrs
dimming current can be customized
Note2, Timing shut down function
Dim Output Current
I_{OUT-MIN-TTYPE} ^{can be customized}
45
50
55 _{% of Iout}
LED Board Temperature Detection(Optional)
The LED board temperature detection input can be connected to a thermistor (NTC) to realize a LED Board Over
Temperature Protection and prevent the LED lamp from damage or luminous decay at high temperature.
The thermistor should be located on the LED assembly to monitor its temperature. If the temperature exceeds the
predetermined LED OTP point, the output current of the driver is automatically reduced to regulate the temperature of the
LED board at a safe level.
See “LED OTP Current Reduction Curve” for detailed information.
Thermistor Resistance
Value that Start
Current Reduction
R_LEDOTP
When the thermistor resistance less
than this value the output current --
4
--
KΩ
start reduce.
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Date: 04/29/2014