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参数资料
| 型号： | IR2159STR |
| 厂商： | International Rectifier |
| 文件页数： | 9/25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)
External Components Selection Procedure
(Note:
Please refer to
BEGIN
R PULL ? UP =
"Typical Connection"
diagram, page 1)
Calculate R PULL-UP
VAC TURN ? ON
I QCCUV
Calculate R VDC
? ?
? VAC TURN ? ON
=
1 ?
? ? R VAC
Set R VAC and R VDC such that the voltage
on pin VDC will exceed 5.1 volts at the
desired line turn-on voltage.
R VDC
? 5 . 1
5 . 1
VAC TURN ? ON
?
?
R VDC
VAC TURN-ON
The minimun operating frequency must
be lower than f 100% of f IGN (whichever is
lower). R FMIN also programs I MIN and
I IPH , so R FMIN must be set first.
Select R FMIN
Use Graph 5 or Graph 6
R FMIN
f MIN
R CS =
R CS sets the maximum ignition current
which corresponds to the maximum
ignition voltage across the lamp.
Calculate R CS
1 . 6
I IGN PK
R CS
I IGN
V IGN
Select & Calculate R IPH
I PH PK ? R CS
The voltage at pin IPH is the reference
for amplitude current control during
preheat mode. R IPH must be set after
R FMIN .
During preheat, an internal 1.3 μ A
current source at pin CPH charges
external capacitor CCPH. Preheat mode
ends when VCPH exceeds 5.1 volts.
Use Graph 8 to find I IPH ,
then calculate R IPH :
R IPH =
I IPH
Calculate C CPH
C CPH = ( 2 . 6 e ? 7 ) t PH
R IPH
C CPH
I PH
t PH
V PH
Calculate R MIN
R MIN sets the lower phase boundary
corresponding to minimum lamp
power when V DIM = 0 volts. R MIN must
be set after R FMIN .
Find I MIN (Graph 7)
Calculate ? MIN (Equations 8 & 9)
Find V MIN (Graph 9)
R MIN
? MIN
P LAMP
R MIN =
V MIN
I MIN
R MAX sets the upper phase boundary
corresponding to maximum lamp power
when V DIM = 5 volts. R MAX must be set
after R FMIN and R MIN .
Calculate R MAX
Use Equation 15
R MAX
? MAX
P LAMP
www.irf.com
9
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| IR2161 | 制造商:International Rectifier 功能描述: |
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