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| AMG-LM302 Datasheet, PDF (18/23 Pages) alpha microelectronics gmbh – Ballast Controller for Metal Halide Lamps | |||
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AMG-LM302
Ballast Controller for Metal Halide Lamps
10. Timing Diagrams
V
400V
350V
330V
290V
~
160V
50V~
35V
24V
15V
5V
all DC ok
15V
start PFC
start Vout
ignition
detected
observation window
after 300s trecking time
15V
V 4kV
~~
+350V
VOUT
-350V
~~
duty cycle
=50%
burst (10-pulses)
BR=H: 4ms nBR=H: 4ms
lamp ignition
VPFC
VRtd
Vout
VRtu
VS
V15V
V5V
t
Bdis
t
BR
nBR
t
t
VLamp
P/I
DC mode
Start-up
Ignition mode
P Lamp
Constant current mode
Constant power mode
t
ILamp
Steady state mode with
constant power regulation
Wf1_K2f_10.03.09
AMG-LM302 Revision: A
29. Jul. 2010 © All rights reserved Page 18 of 23
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