参数资料
型号: IRPLCFL8U
厂商: International Rectifier
文件页数: 11/27页
文件大小: 0K
描述: KIT DES FLUOR BALLAST IRS2530D
标准包装: 1
主要目的: 照明,镇流器控制
嵌入式:
已用 IC / 零件: IRS2530D
主要属性: 32W,调光,120 VAC
次要属性: 预热,自动预热,电压不足保护
已供物品: 板,CD
相关产品: IRS2530DSPBF-ND - IC BALLAST CTRL DIM 600V 8-SOIC
IRS2530DSTRPBFDKR-ND - IC DIMMING BALLAST CTRL 8-SOIC
IRS2530DSTRPBFCT-ND - IC DIMMING BALLAST CTRL 8-SOIC
IRS2530DSTRPBFTR-ND - IC DIMMING BALLAST CTRL 8-SOIC
IRS2530DPBF-ND - IC CTRL BALLAST DIMMING 8-DIP
The closed loop regulation dimming ballast section, unlike in the IRPLCFL4 design, is
incorporated within the 8 pin package of the IRS2530D “simple dim” ballast controller
greatly simplifying the circuit design.
Since we are sensing the lamp arc current with a resistor it is necessary to use voltage
mode preheating to avoid detecting the sum of the current in the arc and the current in the
resonant output capacitor CRES. This has an additional advantage that during preheat
and prior to ignition of the lamp the arc current will always be zero and consequently the
feedback circuit will not influence the oscillator frequency until the lamp is running.
Consequently the preheat will occur in exactly the same way regardless of which of the
live inputs are connected, thus achieving optimum preheat and ignition under all
conditions.
A resistor parallel with CDC can be added if necessary to remove striations (dark rings) in
the lamp that may occur at low dimming levels. However this has not been necessary in
this reference design.
R1 and R2 are fusible resistors that are optional and L1, L2, C1 and C2 are recommended
for EMI filtering but have no bearing on the functional operation of the ballast.
Figure 6.1 shows the voltage at the DIM pin for all 3 dimming level.
Maximum Dim Level
Intermediate Dim Level
Minimum Dim Level
Figure 6.1: IRS2530D DIM pin voltages
www.irf.com
RD0803
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