參數(shù)資料
型號(hào): IRPLLNR3
廠商: International Rectifier
英文描述: Universal Input Linear Fluorescent Ballast using the IR2167
中文描述: 通用輸入線性熒光燈鎮(zhèn)流器用IR2167
文件頁數(shù): 15/27頁
文件大?。?/td> 341K
代理商: IRPLLNR3
www.irf.com
15
RPLLNR3
Figure 10 shows the voltage appearing across the lamp during Startup, Preheat, Ignition Ramp and
Run modes.
Normal Power down
A normal power down occurs when the AC line voltage is disconnected from the ballast.
When this occurs the voltage on the VDC pin of the IR2167 drops below the line fault threshold (3V)
and the IR2167 shuts down in a controlled fashion. The ballast control oscillator is stopped, the half-
bridge driver outputs (LO and HO) are turned off and capacitors CPH, CRAMP, CSTART and CT are
discharged. IR2167 also goes into its UVLO/micro-power mode and the bus voltage begins to col-
lapse.
Fig. 10:
Preheat, Ignition Ramp and Run Voltage in the lamp
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