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| 型号： | IR2167SPBF |
| 厂商： | International Rectifier |
| 文件页数： | 17/33页 |
| 文件大小： | 0K |
| 描述： | IC CTLR BALLAST PFC 20-SOIC |
| 标准包装： | 36 |
| 类型： | PFC/镇流器控制器 |
| 频率： | 41 ~ 47 kHz |
| 电流 - 电源： | 10mA |
| 电源电压： | 11.4 V ~ 15.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC（宽型） |
| 包装： | 管件 |
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IR2167(S) & PbF
f Start
f PH
f Run
f min
t
5V
V CPH
2V
V RPH
2V
V RUN
Figure 5: Oscillator Waveforms
This falling portion of the sawtooth waveform is referred to
as deadtime, during which both HO and LO outputs are low.
The deadtime can be programmed by means of the external
RDT resistor.
Preheat mode
Ignition Run mode
Ramp
mode
The RT input is a voltage-controlled current source, where
the voltage is regulated to be approximately 2.0V. In order
to maintain proper linearity between the RT pin current and
Figure 4: IR2167 Ballast Control Sequence
The control sequence used in the IR2167 allows the Run
mode operating frequency of the ballast to be higher than
the ignition frequency (i.e., fstart > fph > frun > fign). This
control sequence is recommended for lamp types where the
ignition frequency is too close to the run frequency to ensure
proper lamp striking for all production resonant LC compo-
nent tolerances (please note that it is possible to use the
IR2167 in systems where fstart > fph > fign > frun, simply by
leaving the RUN pin open).
The heart of this controller is an oscillator that
resembles those found in many popular PWM voltage
regulator ICs. In its simplest form, this oscillator consists of
a timing resistor and capacitor connected to ground. The
voltage across the timing capacitor CT is a sawtooth, where
the rising portion of the ramp is determined by the current in
the RT lead, and the falling portion of the ramp is determined
by an external deadtime resistor RDT. The oscillograph in
Figure 5 illustrates the relationship between the oscillator
capacitor waveform and the gate driver outputs.
www.irf.com
the CT capacitor charging current, the value of the RT pin
current should be kept between 50μA and 500μA. The RT
pin can also be used as a feedback point for closed loop
control.
PFC Section
In most AC to DC power converters it is necessary to have
the circuit act as a pure resistive load to the AC input line
voltage. To achieve this, active power factor correction (PFC)
can be implimented which, for an AC input line voltage,
produces an AC input line current. It is also important to
produce a sinusoidal input current which has a low total
harmonic distortion (THD) and a high power factor (PF) (See
Figure 6).
.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR2167STRPBF | 功能描述:功率因数校正 IC PFC Ballast Control, Thermal Overload Protection, RoHS:否 制造商:Fairchild Semiconductor 开关频率:300 KHz 最大功率耗散: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| IR2170 | 功能描述:IC CURRENT SENSE 600V 1MA 8-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| IR2170S | 功能描述:IC CURRENT SENSE 600V 1MA 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳流/电流管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 功能:电流开关 检测方法:- 精确度:±10% 输入电压:1.7 V ~ 5.5 V 电流 - 输出:600mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-UFQFN 供应商设备封装:10-UTQFN（1.4x1.8） 包装:管件 |
| IR2171 | 制造商:IRF 制造商全称:International Rectifier 功能描述:LINEAR CURRENT SENSING IC |
| IR2171_06 | 制造商:IRF 制造商全称:International Rectifier 功能描述:LINEAR CURRENT SENSING IC |
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