參數(shù)資料
型號(hào)： IR21571S
廠商： International Rectifier
英文描述： FULLY INTEGRATED BALLAST CONTROL IC
中文描述： 完全集成的鎮(zhèn)流器控制IC
文件頁(yè)數(shù)： 10/17頁(yè)
文件大?。?/td> 234K
代理商： IR21571S
IR21571
(S)
10
www.irf.com
Figure 5: Deadtime versus R
DT
During the
Startup Mode
, the operating frequency is
determined by the parallel combination of R
PH
,
R
START
, and R
T
, combined with the values of C
START
,
C
T
and R
DT
, as shown in Figure 6. This frequency is
normally chosen to ensure that the instantaneous
voltage across the lamp during the first few cycles of
operation does not exceed the strike potential of the
lamp. As the voltage across C
START
charges up to the
R
T
lead voltage, the output frequency exponentially
decays to the preheat frequency.
During the Preheat Mode, the operating frequency
is determined by the parallel combination of R
PH
and
R
T
, combined with the value of C
T
and R
DT
. This
frequency, along with the Preheat Time, is normally
chosen to ensure that adequate heating of the lamp
filaments occur. Typically, a 4.5:1 ratio of the hot
filament-to-cold filament resistance is desired for
maximum lamp life, as shown in Figure 7.
Figure 6: Oscillator section block diagram with external component connection
0.1
1
10
1
100
RDT (Kohms)
tDEAD
(usec)
CT = 220 pF
CT = 470 pF
CT = 1 nF
2
4.0V
5.1V
3
5
7.6V
1.0uA
4
2.0V
I
RT
6
I
CT
= I
RT
7
4.0V
2.0V
CPH
RPH
RT
RUN
CT
DT
Q
S
R1
R2 Q
UNDER-
VOLTAGE
DETECT
C
PH
C
IGN
R
T
C
START
R
START
C
T
R
DT
R
PH
R
RUN
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IR21571SPBF 功能描述:功率驅(qū)動(dòng)器IC BALLAST CTRL BELO 600V 15.6V VCC 150uA 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
IR21571STR 功能描述:IC BALLAST CONTROL INTEG 16-SOIC 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
IR21571STRPBF 功能描述:功率驅(qū)動(dòng)器IC Ballast Cntrl Thrml Ovrload Prot 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
IR2157S 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Ballast Control. Below Resonance Protection. Thermal Overload Protection. Protection from Failure to Strike. Programmable Preheat Time and Run Frequency. Programmable Deadtime in a 16-lead SOIC Narrow package
IR2159 制造商:IRF 制造商全稱:International Rectifier 功能描述:DIMMING BALLAST CONTROL IC
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