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BTS6480SF Datasheet(PDF) 30 Page - Infineon Technologies AG

Part # BTS6480SF
Description  SPI Power Controller
PDF  73 Pages
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Manufacturer  INFINEON [Infineon Technologies AG]
Direct Link  http://www.infineon.com
Logo INFINEON - Infineon Technologies AG

BTS6480SF Datasheet(HTML) 30 Page - Infineon Technologies AG

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Data Sheet
30
Rev. 1.0, 2010-04-12
SPOC - BTS6480SF
Automatic PWM Generator
Figure 9
Phase Shifts between Devices
7.5.2
How to resynchronize a Reset SPOC
In case of a reset SPOC device or a SPOC device in stand-by mode the synchronization can be done as follows:
•
Set the PWM frequencies, duty cycles, phase shifts of the reset device
•
Set the device phase shift for the reset SPOC device
•
Deactivate the automatic PWM generation of all SPOC devices in this daisy chain
•
With the next SPI transmission activate the automatic PWM generator of all SPOC devices by setting PCR.PST
within one MCS-frame
•
Activate the channels of the reset SPOC device via the SPI register OUT.OUTn
With the next rising edge of the PWM clock signal
f
PWM the automatic PWM generation will start again
synchronously.
t
V
PCLK
t
PCR.PST
t
V
OUT0
t
OUT.OUT0
t
OUT.OUT0
DevicePhaseShift.emf
t
V
OUT0
t
Dev. phase shift1
t
PCR.PST
DC
PWM0
t
t
V
OUT1
t
Dev. phase shift1
t
Ch. phase shift1
DC
PWM1
Device 1
Device 2
OUT.OUT1



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