TDA9112A View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA9112A' PDF : 60 Pages View PDF
Figure 10. Control of HOut and BOut at start/stop at nominal VCC
TDA9112A
V(HPosF)
VHBNorm
VBOn
VHOn
Soft start
Start Start
H-drv B-drv
HOut
H-duty cycle
BOut (positive)
B-duty cycle
VHPosF
minimum value
HPOS range
(I²C)
maximum value
Normal operation
Soft stop
Stop Stop
B-drv H-drv
t
100%
0%
Figure 11. Events triggering Soft start and Soft stop
V[HPosF]
Soft start
event
Soft stop
event
V[HPosF]
VCCDis
VCCStop
maximum VCC fall down
speed for correct operation
VCC
V(HPosF)
VHPosF
VHBNorm
VBOn
VHOn
Ï„
Ï„
V(HPosF)
VHBNorm
VBOn
VHOn
Ï„
VHPosF
HBOutEn=1
XRayAlarm=0
VHBNorm’
VBOn’
VHOn’
HOut duty cycle
t
100%
HOut duty cycle
t
100%
BOut duty cycle
0%
BOut duty cycle
0%
NOMINAL VCC
FALLING VCC
39/60
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