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參數(shù)資料
| 型號： | L6382DTR |
| 廠商： | 意法半導體 |
| 英文描述： | Power management unit for microcontrolled ballast |
| 中文描述： | 微控鎮(zhèn)流器功率管理單元 |
| 文件頁數(shù)： | 13/22頁 |
| 文件大?。?/td> | 294K |
| 代理商： | L6382DTR |
L6382D
Application information
13/22
Summarizing:
–
–
–
–
–
the high-voltage start-up generator is active;
V
REF
is disabled with additional sinking circuit on pin V
REF
enabled;
TPR is disabled;
OCP is disabled;
the drivers are disabled.
6.1.2
SAVE Mode
This mode is entered after the Vcc voltage reaches the turn-on threshold; the V
REF
is
enabled in low current source mode to supply the
μ
C connected to it, whose wake-up
required current must be less than 10mA: if no switching activity is detected at LGI input, the
high voltage start-up generator cycles ON-OFF keeping the Vcc voltage between VccON
and VccSM.
Summarizing:
–
–
–
–
–
the high-voltage start-up generator is cycling;
V
REF
is enabled in low source current capability (I
REF
≤
10mA);
TPR circuit is disabled;
OCP is disabled;
the drivers are disabled.
If the Vcc voltage falls below the V
REF(OFF)
threshold, the device enters the
start-up
mode.
6.1.3
OPERATING Mode
After 10
μ
s in
save
mode and only if the voltage at V
REF
is higher than 3.0V, on the falling
edge on the HGI input, the drivers are enabled as well as all the IC's functions; this is the
mode correspondent to the proper lamp behavior.
Summarizing:
–
–
–
–
–
HVSU is OFF
V
REF
is enabled in high source current mode (I
REF
< 30mA)
TPR circuit is enabled
OCP is enabled
the drivers are enabled
If there is no switching activity on LGI for more than 100
μ
s, the IC returns in
save
mode.
6.1.4
Shut down
This state permits to manage the fault conditions in
operating
mode and it is entered by the
occurrence on one of the following conditions:
1.
Vcc<VccOff (Under Voltage fault on Supply),
2.
V
REF
<2.0V (Under Voltage fault on V
REF
)
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