参数资料
型号: IR21571
厂商: International Rectifier
英文描述: FULLY INTEGRATED BALLAST CONTROL IC
中文描述: 完全集成的镇流器控制IC
文件页数: 7/17页
文件大小: 234K
代理商: IR21571
IR21571
(S)
www.irf.com
7
UVLO Mode
1
/
2
-Bridge Off
I
QCC
150
μ
A
Oscillator Off
PREHEAT Mode
1
/
-Bridge @ f
CPH Charging @ I
RPH = 0V
RUN = Open Circuit
CS Disabled
PH
PH
= 1
μ
A
IGNITION RAMP Mode
f
ramps to f
CPH Charging @ I
RPH = Open Circuit
RUN = Open Circuit
CS+ Threshold Enabled
MIN
= 1
μ
A
RUN Mode
f
Ramps to f
CPH Charges to 7.6V Clamp
RPH = Open Circuit
RUN = 0V
CS- Threshold Enabled
VCC > 11.4V
(UV+)
and
VDC > 5.1V
(Bus OK)
and
SD < 1.7V
(Lamp OK)
and
T
J
< 160C
(T
jmax
)
CPH > 4.0V
(End of PREHEAT Mode)
CPH > 5.1V
(End of IGNITION RAMP)
VCC < 9.5V
(VCC Fault or Power Down)
or
VDC < 3.0V
(dc Bus/ac Line Fault or Power Down)
or
SD > 2.0V
(Lamp Fault or Lamp Removal)
Power Turned On
FAULT Mode
Fault Latch Set
1
/
2
-Bridge Off
I
QCC
150
μ
A
VCC = 15.6V
Oscillator Off
T
> 160C
(Over-Temperature)
CS > CS+ Threshold
(Failure to Strike Lamp
or Hard Switching)
or
T
> 160C
(Over-Temperature)
CS > CS+ Threshold
(Over-Current or Hard Switching)
or
CS < 0.2V
(No-Load or Below Resonance)
or
T
> 160C
(Over-Temperature)
SD > 2.0V
(Lamp Removal)
or
VCC < 9.5V
(Power Turned Off)
IR21571 State Diagram
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