參數(shù)資料
型號: DS3994
廠商: Maxim Integrated Products, Inc.
英文描述: 4-Channel Cold-Cathode Fluorescent Lamp Controller
中文描述: 4通道冷陰極熒光燈控制器
文件頁數(shù): 18/28頁
文件大小: 557K
代理商: DS3994
D
4-Channel Cold-Cathode
Fluorescent Lamp Controller
18
____________________________________________________________________
MOSFET GATE DRIVERS ENABLED
DEVICE AND
INVERTER SUPPLIES
AT PROPER LEVELS
STRIKE LAMP
[RAMP AND REGULATE TO
OVD THRESHOLD]
FAULT WAIT
[1024 LAMP CYCLES]
LAMP STRIKE TIMEOUT
[SEE REGISTER CR3]
RUN LAMP
[REGULATE LAMP
CURRENT BOUNDED BY
LAMP VOLTAGE]
LAMP OUT TIMEOUT
[SEE REGISTER CR3]
INCREMENT FAULT
COUNTER
FAULT COUNTER = 15
LAMP OVERCURRENT
[INSTANTANEOUS IF
ENABLED VIA THE
LOC BIT AT CR1.0]
NO
YES
AUTO RETRY ENABLED
[ARD BIT AT CR1.5]
NO
YES
YES
OVERVOLTAGE
[64 LAMP CYCLES]
IF LAMP REGULATION
THRESHOLD IS MET
RESET FAULT COUNTER
AND FAULT OUTPUT
FAULT STATE
[ACTIVATE FAULT OUTPUT]
Figure 9. Fault-Handling Flow Chart
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