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TIMER BLOCK DIAGRAM (TPS61050)
16-bitPrescaler
Safety Timer
FLASH_SYNC
LEDCURRENT CONTROL
GPIO
t
STIM
Safety Timer Trigger
(STT)
1
FlashBlanking
(Tx-MASK)
0
1
0
0
1
0:Input
1:Output
PortDirection
(DIR)
(GPIOBit)
2MHzCLOCK
EdgeDetect
Start
MODE0
MODE1
0: TORCHCURRENT LEVEL
1:FLASHCURRENT LEVEL
122Hz
400kW
400kW
LEDCURRENT CONTROL -OFF ILED
0 0 TorchCurrent
0 1 TorchCurrent
1 0 FlashCurrent
1 1 Torch Current
CURRENT REGULATORMODE- TORCH/FLASH ACTIVE
MODE0=LOW
MODE1=HIGH
Start
Flash/Timer
(SFT)
30.5Hz
Time-Out(TO)
Dimming
(DIM)
Timer
Value
(STIM)
Timer
Value
(DCTIM
Duty-CycleGenerator(0.8%...8.6%)
LEDON/OFFCONTROL
0:LEDOFF
1: TORCHCURRENT LEVEL
(GPIOBit)
TX
-OFFTX
TPS61050
TPS61052
SLUS525 – MARCH 2007
7
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