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参数资料
| 型号： | IR2156STR |
| 厂商： | International Rectifier |
| 文件页数： | 19/21页 |
| 文件大小： | 0K |
| 描述： | IC BALLAST CONT 600V .5A 14-SOIC |
| 标准包装： | 2,500 |
| 类型： | 镇流器控制器 |
| 频率： | 28 ~ 32 kHz |
| 电流 - 电源： | 1mA |
| 电源电压： | 11.5 V ~ 15.6 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC（窄型） |
| 包装： | 带卷 (TR) |
| 配用： | IRPLCFL4-ND - IC BALLAST DIMMING CFL 3-WAY IRPLCFL3-ND - KIT DESIGN CFL TRIAC DIMMING |
IR2156(S)PbF
Design Equations
connected in parallel internally for the duration of the preheat
time. The preheat frequency is therefore given as:
2 ? C T ? ? ?
Note: The results from the following design equations can differ
slightly from experimental measurements due to IC tolerances,
component tolerances, and oscillator over- and under-shoot due
to internal comparator response time.
f PH =
1
? 0.51 ? R T ? R PH
? R T + R PH
?
+ 2000 ? ?
?
[Hertz]
(5)
For additional design support for different lamp types and AC line
input configurations, including component calculations,
Or,
? ? 3333 ? ? R T
= ?
R T ? ? ? 3333 ?
schematics, bill of materials and inductor specifications, please
download IR’s Ballast Design Assistant (BDA) software at
www.irf.com .
Step 1: Program Dead-time
The dead-time between the gate driver outputs HO and LO is
R PH
? 1 ?
1 . 12 ? C T ? f PH ?
? 1 ?
? 1 . 12 ? C T ? f PH ?
[Ohms]
(6)
programmed with timing capacitor CT and an internal dead-time
resistor RDT. The dead-time is the discharge time of capacitor CT
from 3/5VCC to 1/3VCC and is given as:
Step 4: Program Preheat Time
t DT = C T ? 2000
[Seconds]
(1)
The preheat time is defined by the time it takes for the capacitor
on pin CPH to charge up to 13 volts. An internal current source of
5uA flows out of pin CPH. The preheat time is therefore given as:
Or,
C T =
t DT
2000
[Farads]
(2)
Or,
t PH = C PH ? 3 . 02 e 6
[Seconds]
(7)
Step 2: Program Run Frequency
The final run frequency is programmed with timing resistor RT
C PH = t PH ? 0 . 33 e ? 6
[Farads]
(8)
and timing capacitor CT. The charge time of capacitor CT from
1/3VCC to 3/5VCC determines the on-time of HO and LO gate
driver outputs. The run frequency is therefore given as:
Step 5: Program Maximum Ignition Current
The maximum ignition current is programmed with the external
resistor RCS and an internal threshold of 1.25 volts (VCSTH+).
Or,
f RUN =
1
2 ? C T ( 0 . 6 ? R T + 2000 )
[Hertz]
(3)
This threshold determines the over-current limit of the ballast,
which can be exceeded when the frequency ramps down towards
resonance during ignition and the lamp does not ignite. The
maximum ignition current is given as:
R T =
1
1 . 12 ? C T ? f RUN
? 3333
[Ohms]
(4)
I IGN =
1.25
R CS
[Amps Peak]
(9)
Or,
Step 3: Program Preheat Frequency
R CS =
1.25
I IGN
[Ohms]
(10)
The preheat frequency is programmed with timing resistors RT
and RPH, and timing capacitor CT. The timing resistors are
19
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相关代理商/技术参数 |
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| IR2156STRPBF | 功能描述:功率驱动器IC Ballast Cntrl Prog Preht Tm & Run Freq 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 |
| IR2157 | 制造商:IRF 制造商全称:International Rectifier 功能描述:FULLY INTEGRATED BALLAST CONTROL IC |
| IR2157_07 | 制造商:IRF 制造商全称:International Rectifier 功能描述:FULLY INTEGRATED BALLAST CONTROL IC |
| IR21571 | 功能描述:IC BALLAST CONTROL 16-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 照明，镇流器控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:CCFL 控制器 频率:40 ~ 80 kHz 电流 - 电源:5mA 电流 - 输出:- 电源电压:4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) 其它名称:90-3991V+V01 |
| IR21571PBF | 功能描述:功率驱动器IC Ballast Cntrl Thrml Ovrload Prot 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 |
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