参数资料
型号: IR21592S
厂商: International Rectifier
文件页数: 9/26页
文件大小: 0K
描述: IC CNTRLR BALLAST DIMMING 16SOIC
标准包装: 45
类型: 镇流器控制器
频率: 73 ~ 108 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: 管件
配用: IRPLDIM2U-ND - BALLAST DIM DIG 32W/T8 120VAC
其它名称: *IR21592S
IR21592/IR21593 (S) &(PbF)
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 TUR ? ON
=
1 ?
VAC TUR ? O
? VA
? ? R
?
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 VD
C
? 5 . 1
N
5 . 1
N N
C
R VDC
VAC TURN-ON
The minimum 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.
R CS sets the maximum ignition current
Select R FMIN
Use Graph 1 or Graph 2
Calculate R CS
R FMIN
f MIN
which corresponds to the maximum
ignition voltage across the lamp.
R CS =
1 . 6
I IGN PK
R CS
I IGN
V IGN
Select & Calculate R IPH
The voltage at pin IPH is the reference
Use Graph 8 to find I IPH ,
R IP =
H
S
I IP
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
then calculate R IPH :
I P ? R C
PK
H
H
Calculate C CPH
C CPH = ( 2 . 6 e ? 7 ) t PH
R IPH
C CPH
I PH
t PH
V PH
volts.
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 3)
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
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