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參數(shù)資料
| 型號： | IRPLDIM2U |
| 廠商： | International Rectifier |
| 英文描述： | Digital Dimming DALI Ballast for 32W/T8 110V input |
| 中文描述： | 大理數(shù)字調(diào)光鎮(zhèn)流器32W/T8 110V輸入 |
| 文件頁數(shù)： | 5/13頁 |
| 文件大?。?/td> | 234K |
| 代理商： | IRPLDIM2U |
www.irf.com
5
IRPLDIM2U
BALLAST DESIGN
The ballast design incorporates two parts, hardware and software. The ballast controller design portion incorpo-
rates most of the hardware design. The digital design control portion incorporates most of the software design.
Appendix A shows the complete schematic and Appendix B the Bill of Materials.
The Ballast Controller Design
The design of the Ballast control portion of the circuit has been accomplished in International Rectifier’ s Reference
Design IRPLDIM1. Refer to this for waveforms and specific calculations regarding the ballast controller portion of
this design.
Signals of the IR2159
The communication between the microcontroller and the IR21592 is done with four signals, as shown in Fig. 4.
These signals are used for digital dimming (RB3), turning the ballast on or off (RB4), and fault detection (RB5 &
RB6). The microcontroller controls the IR21592 by the following 3 pins: pin SD for shutdown of the IC (active high),
pin FMIN used for fault detection (0 if the IC is
in fault mode) and pin DIM to control the bright-
ness. The microcontroller receives lamp infor-
mation by the signal Lamp-out, connected to
the lamp.
If 0 Lamp OK
If 1 Lamp Fault
1
2
3
4
5
6
7
8
18
17
16
15
14
13
12
11
P
RA2
RA3
RA4
RA5
VSS
RB0
RB1
RB2
RB7
VDD
RA6
RA7
RA0
RA1
RB5
RB6
9
10
RB3
RB4
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
I
VDC
VCO
CPH
DIM
MAX
MIN
FMIN
IPH
LO
COM
VCC
VB
VS
HO
SD
CS
R25
C17
RDIM
1.25V
2.5V
3.75V
If 0 IC OFF
If 1 IC OK
TURN ON IC
TURN OFF IC
C11
R16
R17
VDD
VSS
Lamp
Out
Interfac
e
Optos
D
D
TR data signal
from the network
to the micro
RX data signal
from the micro
to the network
Fig. 4 Micro/IR21592 Communication
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