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参数资料
| 型号： | IR2159STR |
| 厂商： | International Rectifier |
| 文件页数： | 20/25页 |
| 文件大小： | 0K |
| 描述： | IC BALLAST CONTROL DIM 16-SOIC |
| 标准包装： | 2,500 |
| 类型： | 镇流器控制器 |
| 频率： | 25 ~ 95 kHz |
| 电流 - 电源： | 10mA |
| 电源电压： | 12.5 V ~ 15.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SOIC N |
| 包装： | 带卷 (TR) |
IR2159/IR21591 (S)
Once lock is achieved, the phase detector (PDET)
outputs short pulses to an open-drain PMOS that
charges the VCO capacitor through an internal
V MIN
5V
resistor (RFB) each time an error pulse occurs
(Figure 12). This action "nudges" the integrator at
the input of the VCO to keep the phase of the
output stage current exactly locked in phase with
the reference.
3V
1V
R MIN
R MAX
V CT
DIM
RANGE
V CS
0
0.5V
V DIM
USER
SETTING
5V
LO
n REF
t
0 -
-90 -
-180 -
n
LO
n REF
n FB
n ERR
V VCO
t
Figure 12, Phase control timing diagram.
The IR2159 includes a dimming interface for
analog lamp power control. The DIM pin input
requires a voltage in the range of 0.5 to 5VDC,
with 5V corresponding to minimum phase shift
(maximum lamp power). The output of the dim
interface is the voltage on pin MIN, which is
compared with the internal timing capacitor (CT)
voltage to produce a frequency-independent digital
reference phase (Figure 13).
20
Figure 13, Dimming interface
The charging time of CT from 1V to 5.1V
determines the on-time of output gate drivers HO
and LO and corresponds to -180 degrees of
possible phase shift in load current (minus
deadtime). For the 0 to -90 degree dim range, the
voltage on pin MIN is bounded between 1V and
3V using pins MIN and MAX. An external resistor
on pin MAX programs the minimum phase shift
reference (maximum lamp power) corresponding
to 5V on pin DIM, and an external resistor on pin
MIN sets the maximum phase shift (minimum
lamp power) corresponding to 0.5V on pin DIM.
Current Sensing
During dimming, the current sensing circuitry
(Figure 14) detects over-current which can occur
during hard-switching (see Fault section), and
zero-crossing to measure the phase of the total
load current. To reject any switching noise which
can occur at the turn-on of the low-side MOSFET
or IGBT, a digital current sense blanking circuit
blanks out the signal from the zero-crossing
www.irf.com
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相关代理商/技术参数 |
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| IR2161 | 制造商:International Rectifier 功能描述: |
| IR2161PBF | 功能描述:功率驱动器IC Halogen Cnvrtr Cntrl IC RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IR2161S | 制造商:International Rectifier 功能描述: |
| IR2161SPBF | 功能描述:功率驱动器IC HALOGEN CONVERTER CTRLR 500mA 1W RoHS:否 制造商:Micrel 产品:MOSFET Gate Drivers 类型:Low Cost High or Low Side MOSFET Driver 上升时间: 下降时间: 电源电压-最大:30 V 电源电压-最小:2.75 V 电源电流: 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| IR2161STR | 制造商:International Rectifier 功能描述: 制造商:International Rectifier 功能描述:Halogen Converter Control IC in a 8-lead SOIC package. Features Auto Resetting |
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