STV6889 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'STV6889' PDF : 56 Pages View PDF
STV6889
Figure 10. Control of HOut and BOut at start/stop at nominal VCC
V(HPosF)
VHBNorm
VBOn
VHOn
Soft start
Start Start
H-drv B-drv
VHPosF
minimum value
HPOS range
(I²C)
maximum value
Normal operation
Soft stop
Stop Stop
B-drv H-drv
HOut
H-duty cycle
BOut (positive)
B-duty cycle
t
100%
0%
Figure 11. Events triggering Soft start and Soft stop
V[HPosF]
Soft start
event
Soft stop
event
V(HPosF)
t
VHPosF
VHBNorm
VBOn
t
VHOn
V[HPosF]
VCCDis
VCCStop
maximum VCC fall down speed
for correct operation
VCC
V(HPosF)
VHBNorm
VBOn
VHOn
t
VHPosF
VHBNorm’
VBOn’
VHOn’
HBOutEn=1
XRayAlarm=0
HOut duty cycle
t
100%
HOut duty cycle
t
100%
BOut duty cycle
0%
BOut duty cycle
0%
NOMINAL VCC
FALLING VCC
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