参数资料
| 型号： | IRPLCFL5U |
| 厂商： | International Rectifier |
| 文件页数： | 3/15页 |
| 文件大小： | 0K |
| 描述： | KIT DESIGN CFL BALLAST 120VAC |
| 标准包装： | 1 |
| 其它名称： | *IRPLCFL5U |
IRPLCFL5U
(ZVS) and non-ZVS protection, as well as integrated bootstrap diode. The IC protects against non-
ZVS by automatically setting the frequency to ensure ZVS. The IC will eventually shut-down if the
non-ZVS condition cannot be achieved.
One of the biggest advantages of the IR2520D is that it incorporates an internal current crest factor
driven shutdown function and it eliminates the need for a high-precision current sensing resistor
that is typically used to detect over current. The IC uses the VS pin and the RDSon of the low-side
half-bridge MOSFET for over-current protection and to detect non-ZVS conditions. An internal 600V
FET connects the VS pin to the VS sensing circuitry and allows for the VS pin to be accurately
measured during the time when pin LO is high, while withstanding the high DC bus voltage during
the other portion of the switching cycle when the high-side FET is turned on and VS is at the DC bus
potential. Please refer to the IR2520D data sheet for further information on the IR2520D including
electrical parameters, state diagram and complete functional description. As a result of the IR2520D
features, the IRPLCFL5U circuit using the IR2520D is a complete CFL solution that offers better
reliability and longer lamp life than self oscillating solutions while reducing component count and
ballast size.
5. Circuit Description
The schematic for IRPLCFL5U is shown in figure 5.1. The BOM with the components values is
shown in table 5.2.
The ballast incorporates a fuse, EMI filter, input rectifier, bus capacitor, half-bridge, control and
output stage. The output stage is the classical resonant circuit consisting of an inductor, LRES, and
a capacitor, CRES. The circuit is built around the IR2520D Ballast Control IC. The IR2520D pro-
vides adjustable preheat time, adjustable run frequency to set the lamp power, high starting fre-
quency (about 2.5 times fmin) to avoid lamp flash, capacitive mode protection for open filament
condition and current crest factor protection for failure to strike or no lamp conditions.
The AC line input voltage is rectified to provide a bus voltage of approximately 300 volts. The start
up resistors, Rsupply1 and Rsupply2, are sized such that they can supply the micro-power current
during under-voltage lockout (UVLO). When VCC exceeds the UVLO+ threshold, the IR2520D
begins to oscillate and the charge pump circuit (CSNUB, DCP1 and DCP2) supplies the current to
VCC that causes the internal 15.6V zener clamp to regulate.
The IR2520D Ballast Control IC controls the frequency of the half-bridge as well as the ballast
states and protection modes such as lamp preheat, lamp ignition, running mode, low AC line
protection and lamp/ballast fault protection.
www.irf.com
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相关PDF资料 |
PDF描述 |
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| IRPLCFL8U | KIT DES FLUOR BALLAST IRS2530D |
| IRPLDIM1U | BALLAST DIMMING 32W/T8 120VAC |
| IRPLDIM2E | KIT BALLAST DIM DIG 230VAC |
| IRPLDIM2U | BALLAST DIM DIG 32W/T8 120VAC |
| IRPLDIM3 | KIT DES FLUOR BALLAST IRS2158D |
相关代理商/技术参数 |
参数描述 |
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| IRPLCFL7U | 制造商:International Rectifier 功能描述:9999V 999.000A OTHER - Boxed Product (Development Kits) |
| IRPLCFL8U | 功能描述:电源管理IC开发工具 3 lvl Dim CFL Fluor Ballast w/IRS2530D 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 |
| IRPLCFL9U | 功能描述:电源管理IC开发工具 3 lvl Dim CFL Fluor Ballast Ref dsgn 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 |
| IRPLDIM1 | 制造商:IRF 制造商全称:International Rectifier 功能描述:Dimming Ballast Control IC Design Kit |
| IRPLDIM1E | 功能描述:KIT BALLAST DIMMING 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 |
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