参数资料
| 型号： | IRPLLNR5 |
| 厂商： | International Rectifier |
| 文件页数： | 20/21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 |
and will turn on again at the next zero-crossing of the inductor current as detected by the ZX pin. This
over-current condition can occur, for example, during a low-line condition (Figure 15). As the AC line
decreases, the PFC inductor and MOSFET current will increase to keep the DC bus constant for a
given power level. When the peak current reaches the over-current threshold, the cycle-by-cycle
current limit will cause the peak of the MOSFET current to flatten and the DC bus to start to drop. This
current limit is necessary to prevent saturation of the PFC inductor current and to protect the PFC
MOSFET from being damaged.
Fig. 15: OC Pin Voltage (Black) and DC Bus Voltage (Green) During Low-Line Condition
Brown-Out Protection
The IRS2168D includes an under-voltage reset (UVR) function at the VBUS pin. Should the DC bus
decrease too far during a momentary interrupt of the mains input voltage, the ballast should be properly
shutdown and restarted. This will prevent the lamp from extinguishing and will properly preheat and
restart the lamp when the mains voltage returns. If the VBUS pin voltage decreases below 3 V, the
PFC and half-bridge gate drivers will be turned off and VCC will be discharged to UVLO-. The ballast
will then be restarted via the RSUPPLY resistor when the mains voltage reaches a high enough level
again (Figure 16).
www.irf.com
RD-0613
20
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| IRPLLNR7 | KIT UNIV ELEC BALLAST FLUOR LAMP |
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| IS-418-TR1509-12 | POWER SUPPLY 240VAC FOR DEV KIT |
| IS-DEM KIT-2 | SMARTDISPLAY DEMONSTRATION KIT 2 |
| IS-DEV KIT-1 | SMARTSWITCH DEVELOPMENT KIT 1 |
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