IL6083 IK Semicon Co., Ltd, IL6083 Datasheet - Page 5

• Manufacturer Part Number: IL6083
• Description: Pwm Power Control Ic With Interference Suppression
• Manufacturer: IK Semicon Co., Ltd

Output Slope Control
The slope of the lamp voltage is internally limited to reduce radio interference by limitation of the voltage gain
of the PWM comparator.
Thus, the voltage rise on the lamp is proportional to the oscillator voltage increase at the switchover time
according to the equation.
Via an external capacitor, C
To damp oscillation tendencies, a resistance of 100Ω in series with capacitance C
Interference Suppression
• “On-board” radio reception according to VDE 0879 part 3/4.81
• Test conditions refering to Figure 3
• Application circuit according to Figure 1 or Figure 4
• Load: nine 4 W lamps in parallel
• Duty cycle = 18%
• V
• f
Osc
Batt
= 100 Hz
= 12 V
Figure 3. Voltage Spectrum of On-board Radio Reception
4
, the slope can be further reduced as follows:
4
is recommended.
Rev. 00
IL6083