參數(shù)資料
型號: L6567
廠商: 意法半導(dǎo)體
英文描述: HIGH VOLTAGE DRIVER FOR CFL
中文描述: 高壓驅(qū)動節(jié)能燈
文件頁數(shù): 10/15頁
文件大?。?/td> 115K
代理商: L6567
L6567
10/15
Figure 4. IC Operation
START
V
S
>V
SLOW1
RESTARTWITH
F=F
MAX
FREQUENCYSHIFTSIN T=T
IGN
TOWARDSBURNINGSTATECONDITION
(F=MAX{F
MAX
,F
FEEDFORWARD
,F
CAPACITIVEMODE
})
NO OSCILLATION
LOW SIDE MOS ON
HIGH SIDE MOS OFF
V
S
>V
SHIGH1
Y
Y
N
N
START OSCILLATION
F=F
MAX
T=T
0
N
T=T
0
+T
PRE
Y
V
RS
>V
PH
N
F>F
MIN
DECREASE
FREQUENCY
OPEN LOAD DETECTION:STOP
LOW SIDE MOS ON
AND HIGH SIDEMOS OFF
INCREASE
FREQUENCY
N
Y
Y
N
V
S
>V
SHIGH2
V
S
>V
SHIGH2
T>T
0
+T
PRE
+T
IGN
Y
N
F>F
MIN
DECREASE
FREQUENCY
INCREASE
FREQUENCY
Y
N
Y
N
Y
FEED FORWARD MODE
ACTIVATED
V
S
>V
SHIGH2
V
RS
<V
CMTH
V
RS
<V
CMTH
F>F
FEEDFORWARD
F>F
MIN
DECREASE
FREQUENCY
INCREASE
FREQUENCY
Y
N
N
Y
Y
N
Y
N
STOP OSCILLATION
LOW SIDE MOS ON
HIGH SIDE MOS OFF
V
S
>V
SHIGH1
Y
N
Y
PREHEATING MODE
IGNITION MODE
BURNING MODE
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