参数资料
| 型号： | IRPLLNR5 |
| 厂商： | International Rectifier |
| 文件页数： | 15/21页 |
| 文件大小： | 0K |
| 描述： | KIT BALLAST UNIV FLUOR 54W TL5 |
| 标准包装： | 1 |
| 主要目的： | 照明，镇流器控制 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | IRS2168D |
| 主要属性： | 54 W TL5，90 ~ 305 VAC，PFC |
| 次要属性： | 灯丝预热，自动复位；灯丝断路、无灯和电压不足保护 |
| 已供物品： | 板，CD |
| 相关产品： | IRS2168DPBF-ND - IC PFC BALLAST CTLR ADV 16-PDIP IRS2168DSPBF-ND - IC PFC/BALLAST CONTROL 16-SOIC IRS2168DSTRPBFDKR-ND - IC PFC & BALLAST CONTROL 16-SOIC IRS2168DSTRPBFCT-ND - IC PFC & BALLAST CONTROL 16-SOIC IRS2168DSTRPBFTR-ND - IC PFC & BALLAST CONTROL 16-SOIC |
Fig. 10: CPH Pin Voltage (Black) and Lamp Voltage (Blue) During Lamp
Non-Strike Fault Condition
During Ignition Mode, the voltage on the CPH pin of the IRS2168D continues to ramp up until the
voltage at the CPH pin exceeds 0.67(V CC ) a second time and the IC enters Run Mode. The over-current
fault counter is disabled during Ignition Mode due to the ignition regulation feature and enabled again
at the start of Run Mode. During a lamp non-strike condition, the ignition voltage will be regulated for
the duration of Ignition Mode and then unregulated during Run Mode. This means that the ignition
voltage will increase slightly after Ignition Mode (as the frequency decreases towards the run
frequency) until the fault counter times out, after 65 cycles above the over-current threshold, and the
ballast shuts off. The amount of frequency shift and resulting voltage increase is determined by the
value of CVCO. The 5 V shutdown threshold at the SD pin is also disabled during Ignition Mode and
enabled again at the start of Run Mode. A full explanation of the functionality of the over-current
sensing and shutdown functions are in the Fault Mode section.
Run Mode
During Run Mode and after a successful lamp ignition, the frequency is at the final run frequency and
is determined by RFMIN. The 1 V and 3 V end-of-life (EOL) window comparator at the SD/EOL pin,
the 5 V unlatched shutdown threshold at the SD/EOL pin, and the fault counter at the CS pin, are all
enabled in Run Mode. A functional description of the over-current sensing and end-of-life sensing is
given in the Fault Mode section.
www.irf.com
RD-0613
15
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