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參數(shù)資料
| 型號(hào)： | IR21592 |
| 廠商： | International Rectifier |
| 英文描述： | DIMMING BALLAST CONTROL IC |
| 中文描述： | 調(diào)光鎮(zhèn)流器控制IC |
| 文件頁(yè)數(shù)： | 22/25頁(yè) |
| 文件大?。?/td> | 259K |
| 代理商： | IR21592 |
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IR21592/IR21593
(S)
22
www.irf.com
The operating frequency [Hz] at maximum lamp
power is given as:
The cathode heating current at minimum lamp
power is given as:
π
=
2
%
1
%
1
%
1
C
f
V
I
Cath
(7)
Design Constraints
The inductor and capacitor values should be
iterated until the following design constraints have
been fulfilled (Table II).
Design Constraint
V
V
ph
<
Reason
ph
max
Ignition during pre-
heat
Production tolerances
f
f
kHz
ph
ign
<
≥
>
5
I
I
ign
ign
I
max
Inductor saturation
Lamp extinguishing
during dimming
min
%
1
Cath
Cath
I
Table II, Ballast design constraints
IR21592/IR21593 Programmable Inputs
In order to program the MIN and MAX settings of
the dimming interface, the phase of the output
stage current at minimum and maximum lamp
power must be calculated. This is obtained using
the following equations:
2
2
2
%
100
C
2
4
%
100
V
2
2
%
100
P
4
%
100
V
2
2
%
100
P
%
100
f
4
1
32
C
1
32
C
1
2
1
π
L
V
V
LC
LC
DC
π
+
=
(6)
Ballast Output Stage
The components comprising the output stage are
selected using a set of equations. Different ballast
operating frequencies and their respective
voltages and currents are calculated.
The inductor and capacitor values are obtained
using equations (2) through (7). The results of
these equations reveal the location of each
operating frequency and the corresponding
voltages and currents. For a given L, C, DC bus
voltage, and pre-heat current, the resulting voltage
over the lamp during pre-heat is given as:
The resulting operating frequency during pre-heat
is given as:
ph
ph
ph
CV
π
I
f
2
=
[Hz]
(3)
The resulting operating frequency during ignition
is given as:
LC
V
V
f
ign
DC
ign
π
π
2
4
1
1
+
=
[Hz]
(4)
The total load current during ignition is given as:
I
f
CV
ign
ign
ign
=
2
π
[App]
(5)
π
π
DC
ph
DC
ph
V
I
C
L
V
V
2
8
2
2
1
2
2
+
=
(2)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR21592_08 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:IR21592 Dimming Ballast Control IC Design Kit |
| IR21592PBF | 功能描述:功率驅(qū)動(dòng)器IC Dim Ballast Cntrl 1.8us Deadtime RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| IR21592PBF | 制造商:International Rectifier 功能描述:Controller IC Output Voltage Max.:20V |
| IR21592S | 功能描述:IC CNTRLR BALLAST DIMMING 16SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 照明，鎮(zhèn)流器控制器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:CCFL 控制器 頻率:40 ~ 80 kHz 電流 - 電源:5mA 電流 - 輸出:- 電源電壓:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:帶卷 (TR) 其它名稱:90-3991V+V01 |
| IR21592SPBF | 功能描述:功率驅(qū)動(dòng)器IC DIMMING BALLAST CTRL 0.5 to 5V DC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時(shí)間: 下降時(shí)間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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