参数资料
型号: IR21592S
厂商: International Rectifier
文件页数: 21/26页
文件大小: 0K
描述: IC CNTRLR BALLAST DIMMING 16SOIC
标准包装: 45
类型: 镇流器控制器
频率: 73 ~ 108 kHz
电流 - 电源: 10mA
电源电压: 12.5 V ~ 15.6 V
工作温度: -40°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: 管件
配用: IRPLDIM2U-ND - BALLAST DIM DIG 32W/T8 120VAC
其它名称: *IR21592S
IR21592/IR21593 (S) &(PbF)
Should the peak voltage on pin CS exceed 1.6V
V CS
LO
? BLANK
Switching
Noise
Dimming
t
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
Range
Lamp Requirements
Figure 16, Current sense timing diagram.
Fault Mode (FAULT)
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:
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.
LOAD
REMOVAL
HO
LO
VS
Variable
I ph
t ph
V ph max
V ign
P 100 %
V 100 %
P 1 %
V 1 %
Description
Filament pre-heat current
Filament pre-heat time
Maximum lamp pre-heat voltage
Lamp ignition voltage
Lamp power at 100% brightness
Lamp voltage at 100% brightness
Lamp power at 1% brightness
Lamp voltage at 1% brightness
Units
Arms
s
Vpp
Vpp
W
Vpp
W
Vpp
V CS
1.6V
t
I Cath min
Minimum cathode heating current
Arms
t
Table I, Typical lamp requirements
NORMAL
OPERATION
HARD
SWITCHING
FAULT
Figure 17, hard-switching with latch off
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