参数资料
| 型号： | IRPLDIM1U |
| 厂商： | International Rectifier |
| 文件页数： | 13/15页 |
| 文件大小： | 0K |
| 描述： | BALLAST DIMMING 32W/T8 120VAC |
| 标准包装： | 1 |
| 其它名称： | *IRPLDIM1U |
Waveforms
Figure 4 shows the voltage appearing across the lamp while Figure 5 shows the current flowing
through the lamp during Startup, Preheat, Ignition and Dim modes.
Figure 4, Lamp voltage during Startup, Preheat,
Ignition and Dim (100%)
Figure 5, Lamp current during Startup, Preheat,
Ignition and Dim (100%) (100mA/div.)
Normal Powerdown
A Normal Powerdown occurs when the AC line voltage is disconnected from the ballast. When this
occurs the voltage on the VDC pin of IC2 drops below the line fault threshold (3V) and IC2 shuts
down in a controlled fashion. The oscillator is stopped, the half-bridge driver outputs (LO and HO)
are turned off and capacitor CPH is discharged. IC2 also goes into its UVLO/micro-power mode and
the bus voltage begins to collapse.
Fault Mode
Fault mode is when the ballast driver is shutdown due to the detection of a lamp fault. Note that when
the ballast is in this Fault mode the power factor correction section of the ballast is also shutdown
and the bus voltage will drop to the non-boosted/unregulated level. There are several lamp fault
conditions which can put the ballast into the Fault mode. The lamp fault conditions detected include:
near/below resonance (under-current) detection, hard-switching detection and over-current detec-
tion. Resistor RCS in the source lead of the low side MOSFET (MLS) serves as the current sensing
point for the half-bridge which is used to detect these lamp fault conditions. In operation when the
half-bridge is oscillating, a voltage appears across RCS whenever the low side MOSFET, MLS, is
turned on or the high side MOSFET, MHS, is turned off. The magnitude of this voltage directly relates
to the current in the lamp resonant circuit. Figure 6 shows the voltage which appears across resistor
RCS during normal Run mode conditions while Figure 14 shows the voltage appearing across the
lamp during the end of Preheat mode, Ignition Ramp mode and the beginning of Run mode. Also
shown in Figure 7 are the gate drive signals for the low side MOSFET (LO pin) and the high side
MOSFET (HO-VS pin).
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PDF描述 |
|---|---|
| IRPLDIM2E | KIT BALLAST DIM DIG 230VAC |
| IRPLDIM2U | BALLAST DIM DIG 32W/T8 120VAC |
| IRPLDIM3 | KIT DES FLUOR BALLAST IRS2158D |
| IRPLDIM4E | KIT DES BALLAST 26W IRS2530D |
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相关代理商/技术参数 |
参数描述 |
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| IRPLDIM2A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Digitally Addressable DALI Dimming Ballast Reference Design |
| IRPLDIM2E | 功能描述:KIT BALLAST DIM DIG 230VAC RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:- 标准包装:1 系列:- 类型:MCU 适用于相关产品:Freescale MC68HC908LJ/LK（80-QFP ZIF 插口） 所含物品:面板、缆线、软件、数据表和用户手册 其它名称:520-1035 |
| 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 |
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