参数资料
| 型号： | IRPLDIM2E |
| 厂商： | International Rectifier |
| 文件页数： | 8/14页 |
| 文件大小： | 0K |
| 描述： | KIT BALLAST DIM DIG 230VAC |
| 标准包装： | 1 |
| 其它名称： | *IRPLDIM2E |
IRPLDIM2E
Isolation and the Signals for DALI
The Digitally Addressable Lighting Interface is optically isolated from the microcontroller. Fig. 7 shows the connec-
tions between DALI and microcontroller.
+
DALI
RB0
RB2
ENABLE
TX_DALI
-
RB1
RA1
RECEIVE-DRIVE
RX_DALI
RA2
MICRO-CONTROLLER
Fig. 7 DALI and Micro Controller connections
The two wires from the DALI are converted to four signals. Two of the four are the transmit signal (RB2) and
receive signal (RX_DALI). The other two signals are the communications-enable (RB0) signal and the receive-
drive (RB1) signal. The transmit signal and the receive signal directly correlate to the levels seen on the Digitally
Addressable Lighting Interface. For receiving higher voltage logic on the DALI is translated to 5 volt logic at the
micro controller, and for transmission, the 5 volt logic is translated to the higher voltage logic on the DALI.
The ballast achieves very low power by controlling the communications circuit with the communication-enable
signal and the receive-drive signal. During normal operation the PIC16F628 enables the communication circuitry
with the communication-enable signal. With this signal there is enough current, less than 100uA, to indicate when
data is being sent to the ballast, but not enough current to accurately transfer the data. Upon detection (done by
a S/H built into the PIC16F628) the receive-drive is asserted to raise the current above 500uA to achieve good
signal transfer across the isolation. The receive-drive signal is only enabled long enough to transfer all the data;
then it is disabled (see waveforms in figure 8). This method strongly reduces the power/current use. The com-
parator built into the PIC16F628 is used to set the threshold for detection of the incoming data. The signal RA2 is
used as threshold for the comparator.
8
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相关PDF资料 |
PDF描述 |
|---|---|
| IRPLDIM2U | BALLAST DIM DIG 32W/T8 120VAC |
| IRPLDIM3 | KIT DES FLUOR BALLAST IRS2158D |
| IRPLDIM4E | KIT DES BALLAST 26W IRS2530D |
| IRPLDIM5E | KIT DES BALLAST 4LEVEL DIM FLUOR |
| IRPLHALO1E | KIT HALOGIN CONVERTER 100VA |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IRPLDIM2U | 功能描述:BALLAST DIM DIG 32W/T8 120VAC RoHS:否 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| IRPLDIM3 | 功能描述:电源管理IC开发工具 3 lvl Dim CFL Fluor Ballast w/IRS2158D RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| IRPLDIM4E | 功能描述:电源管理IC开发工具 Miniature Dimmable 26W Ballast dsgn kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| IRPLDIM5E | 功能描述:电源管理IC开发工具 4lvl Swtch Dim Fluor Ballast dsgn Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| IRPLHALO1E | 功能描述:电源管理IC开发工具 Halogen Cnvrtr 220/230VAC RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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