- 您现在的位置：买卖IC网 > PDF目录1810 > IRS2166DSTRPBF (International Rectifier)IC CTRL PFC/BALLAST 16-SOIC PDF资料下载
参数资料
| 型号： | IRS2166DSTRPBF |
| 厂商： | International Rectifier |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | IC CTRL PFC/BALLAST 16-SOIC |
| 标准包装： | 2,500 |
| 类型： | PFC/镇流器控制器 |
| 频率： | 40 ~ 46 kHz |
| 电流 - 电源： | 20mA |
| 电流 - 输出： | 260mA |
| 电源电压： | 12.5 V ~ 15.6 V |
| 工作温度： | -25°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) |
| 配用： | IRPLLNR7-ND - KIT UNIV ELEC BALLAST FLUOR LAMP |
IRS2166D(S)PbF
V BUS (+)
V BUS (+)
VCC
13
S
R T
R PH
C T
R
T
RPH
C
T
3
4
5
S4
OSC.
Half-
Bridge
Driver
16
15
11
HO
VS
LO
M1
Half-
Bridge
Output
I LOAD
M2
R T
R PH
C T
RT
RPH
CT
3
4
5
1
S
4
OSC
Fault
Logic
Half-
Bridge
Driver
16
15
11
HO
VS
LO
M1
Half-
Bridge
Output
I LOAD
M2
S
3
1.3V
CS
CPH
2
5uA
RCS
CPH
2
5uA
Comp 4
10
R1
C CS
R CS
C CPH
IRS2166D
12
COM
Load
Return
C CPH
IRS2166D
12
COM
Load
Return
www.irf.com
V BUS (-)
Fig. 3: Preheat circuitry
gate of a p-channel MOSFET (S4) (see Fig. 4) that
connects pin RPH with pin RT. As pin CPH exceeds 10.8
V (V CPHEOP ), the gate-to-source voltage of MOSFET S4
begins to fall below the turn-on threshold of S4. As pin
CPH continues to ramp towards V CC , switch S4 turns off
slowly. This results in resistor R PH being disconnected
smoothly from resistor R T , which causes the operating
frequency to ramp smoothly from the preheat frequency,
through the ignition frequency, to the final run frequency.
The over-current threshold on pin CS will protect the
ballast against a non-strike or open-filament lamp fault
condition. The voltage on pin CS is defined by the lower
half-bridge MOSFET current flowing through the external
current sensing resistor R CS . The resistor R CS therefore
programs the maximum allowable peak ignition current
(and therefore peak ignition voltage) of the ballast output
stage. The peak ignition current must not exceed the
maximum allowable current ratings of the output stage
MOSFETs. Should this voltage exceed the internal
threshold of 1.20 V (V CSTH+ ), the internal fault counter
begins counting the number of of sequential over-current
faults (see timing diagram). If the number of over-current
faults exceeds 50 (n EVENTS ), the IC will enter FAULT mode
and gate driver outputs HO, LO and PFC will be latched
low.
Run Mode (RUN)
Once the lamp has successfully ignited, the ballast enters
run mode. The run mode is defined as the state the IC is
in when the lamp arc is established and the lamp is being
driven to a given power level. The run mode oscillating
frequency is determined by the timing resistor R T and
timing capacitor C T (see Design Equations, page 15).
Should hard-switching occur at the half-bridge at any time
due to an open-filament or lamp removal, the voltage
across the current sensing resistor, R CS , will exceed the
internal threshold of 1.20 V (V CSTH+ ) and the fault counter
will begin counting (see timing diagram). Should the
number of consecutive over-current faults exceed 50
(n EVENTS ), the IC will enter fault mode and gate driver
outputs HO, LO and PFC will be latched low.
V BUS (-)
Fig.4: Ignition circuitry
DC Bus Undervoltage Reset
Should the DC bus decrease too low during a brown-out
line condition or over-load condition, the resonant output
stage to the lamp can shift near or below resonance. This
can produce hard-switching at the half-bridge which can
damage the half-bridge switches or, the DC bus can
decrease too far and the lamp can extinguish. To protect
against this, the VBUS pin includes a 3.0 V undervoltage
threshold (V BUSUV ). Should the voltage at the VBUS pin
decrease below 3.0 V, V CC will be discharged below the
V CCUV - threshold and all gate driver outputs will be latched
low.
For proper ballast design, the designer should design the
PFC section such that the DC bus does not drop until the
AC line input voltage falls below the rated input voltage of
the ballast (see PFC section). When correctly designed,
the voltage measured at the VBUS pin will decrease
below the internal 3.0 V threshold (VBUSUV) and the
ballast will turn off cleanly. The pull-up resistor to V CC
(R SUPPLY ) will then turn the ballast on again when the AC
input line voltage increases to the minimum specified
value causing V CC to exceed V CCUV +.
R SUPPLY should be set to turn the ballast on at the
minimum specified ballast input voltage. The PFC should
then be designed such that the DC bus decreases at an
input line voltage that is lower than the minimum specified
ballast input voltage. This hysteresis will result in clean
turn-on and turn-off of the ballast.
SD/EOL and CS Fault Mode (FAULT)
Should the voltage at the SD/EOL pin exceed 3.0 V
(V EOLTH+ ) or decrease below 1.0 V (V EOLTH- ) during run
mode, an end-of-life (EOL) fault condition has occurred
and the IC enters fault mode. LO, HO, and PFC gate
driver outputs are all latched off in the ‘low’ state. C PH is
discharged to COM for resetting the preheat time. To exit
fault mode, V CC can be decreased below V CCUV - (ballast
power off) or the SD pin can be increased above 5.0 V
(V SDTH+ ) (lamp removal). Either of these will force the IC
to enter UVLO mode (see State Diagram, page 7). Once
Page 10
相关PDF资料 |
PDF描述 |
|---|---|
| IRS2168DSTRPBF | IC PFC & BALLAST CONTROL 16-SOIC |
| IRS2526DSTRPBF | IC BALLAST CONTROLLER |
| IRS2530DSPBF | IC BALLAST CTRL DIM 600V 8-SOIC |
| IRS2552DSPBF | IC BALLAST CTLR CCFL/EEFL 16SOIC |
| IRS2573DSPBF | IC BALLAST CNTRLLER 600V 28-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IRS21681DSPBF | 制造商:International Rectifier 功能描述:ADVANCED PFC AND BALLAST CONTROL IC - Rail/Tube 制造商:International Rectifier 功能描述:IC LIGHT BALLAST CONTROL |
| IRS21681DSTRPBF | 功能描述:开关变换器、稳压器与控制器 Advanced PFC & Ballast Cntrl IC RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| IRS2168DPBF | 功能描述:功率驱动器IC Advanced PFC & Ballast Cntrl IC 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 |
| IRS2168DSPBF | 功能描述:功率驱动器IC ADVANCED PFC BALLAST CTRL IC 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 |
| IRS2168DSPBF | 制造商:International Rectifier 功能描述:MOSFET Driver IC |
发布紧急采购，3分钟左右您将得到回复。