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AN2708 bảng dữ liệu(PDF) 19 Page - STMicroelectronics

tên linh kiện AN2708
Giải thích chi tiết về linh kiện  2X36 W digital dimmable ballast with L6574 and ST7FDALI
PDF  42 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2708 bảng dữ liệu(HTML) 19 Page - STMicroelectronics

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AN2708
High-frequency ballast
19/42
Figure 8.
Ballast controls timing chart
On the slave unit the turning ON/OFF process is implemented by setting the pins PB3 (EN1)
and PB4 (EN2) as output pull-up, while PB2 (ZCD) as output open drain. The three
corresponding bits in the port data register are clear by software. To "switch on" the ballast,
a pulse must be sent to PB4 (EN2 signal) and the third bit must be set in the port B (ZCD)
data register. To "switch off" the ballast, a pulse must be sent to PB3 (EN1 signal) and the
third bit must be cleared in the port B (ZCD signal) data register.
Figure 9, 10, and 11 show the idle state and the turn-on/off commands.
Vsupply
EN1
LVG
HVG
EN2
ZCD
GD
TIME
Latched
Disable
Forced
Restart



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