參數(shù)資料
型號(hào)： IR21593
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)： 21/25頁(yè)
文件大小： 259K
代理商： IR21593
IR21592/IR21593
(S)
www.irf.com
21
BLANK
V
CS
t
LO
Switching
Noise
Dimming
Range
Fault Mode (FAULT)
During dimming, the peak current regulation circuit
active during preheat and ignition is disabled.
Should non-zero voltage switching at the output
of the half-bridge occur (Figure 17), high current
spikes will result. A lamp filament failure, lamp
end-of-life, lamp removal, or a deadtime shorter
than what is required for commutation, can all
cause hard-switching.
t
t
VS
HO
LO
V
CS
1.6V
NORMAL
OPERATION
HARD
SWITCHING
FAULT
LOAD
REMOVAL
Figure 17, hard-switching with latch off
Figure 16, Current sense timing diagram.
Should the peak voltage on pin CS exceed 1.6V
at any time during dimming, the IR21592/IR21593
enters FAULT mode and the high and low-side
driver outputs, HO and LO, are both turned off.
Cycling the supply voltage on VCC below UVLO-
or the voltage on pin SD above and below SD+
and SD- will reset the IR21592/IR21593 to preheat
(PH) mode (see STATE DIAGRAM).
Ballast Design
Lamp Requirements
Before selecting component values for the ballast
output stage and the programmable inputs of
the IR21592/IR21593, the following lamp
requirements must first be defined:
Variable
I
Description
Units
ph
Filament pre-heat current
Arms
ph
t
Filament pre-heat time
s
max
ph
V
V
Maximum lamp pre-heat voltage
Vpp
ign
Lamp ignition voltage
Vpp
%
100
P
V
Lamp power at 100% brightness
W
%
100
Lamp voltage at 100% brightness
Vpp
%
1
P
1
V
Lamp power at 1% brightness
W
%
Lamp voltage at 1% brightness
Vpp
min
Cath
I
Minimum cathode heating current
Arms
Table I, Typical lamp requirements
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IR21593PBF 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
IR21593PBF 制造商:International Rectifier 功能描述:Controller IC Output Voltage Max.:20V
IR21593S 功能描述:IC CTRLR BALLAST DIMMING 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
IR21593SPBF 功能描述:功率驅(qū)動(dòng)器IC DIMMING BALLAST CTRL 600V 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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